{"id":26595,"date":"2026-09-23T03:43:23","date_gmt":"2026-09-23T02:43:23","guid":{"rendered":"https:\/\/www.arhns.uns.ac.rs\/givsf\/?p=26595"},"modified":"2026-09-23T03:44:48","modified_gmt":"2026-09-23T02:44:48","slug":"uporedna-aerodinamicka-analiza-iterativnih-modela-f1-bolida-u-autodesk-cfd-simulatoru-faza-iii","status":"publish","type":"post","link":"https:\/\/www.arhns.uns.ac.rs\/givsf\/uporedna-aerodinamicka-analiza-iterativnih-modela-f1-bolida-u-autodesk-cfd-simulatoru-faza-iii\/","title":{"rendered":"Uporedna aerodinami\u010dka analiza iterativnih modela F1 bolida u Autodesk CFD simulatoru &#8211; FAZA III"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><mark class=\"has-inline-color has-green-color\"><strong>WORKFLOW<\/strong><\/mark><\/h2>\n\n\n\n<p><strong>Modelovanje u Rhinu (komande):<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li> \u0160asija:  SubDBox + Reflect + Pomeranje ta\u010daka (nos, motor, kokpit<\/li>\n\n\n\n<li>To\u010dkovi i felne:  Solid Cilindri + Boolean operacije<\/li>\n\n\n\n<li>Veze:  SubDBox + Solid Cilindri + Mirror<\/li>\n\n\n\n<li>Aerodinami\u010dka krila: Polycurve + Extrude + Boolean operacije<\/li>\n\n\n\n<li>Retrovizori: Sphere + Boolean operacije + Pipe komanda za nosa\u010de. <\/li>\n<\/ul>\n\n\n\n<p><strong>Generisanje 40 iteracija u Rhinu:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vi\u0161estruka primena alatke QuadRemsh na originalni F1 model<\/li>\n\n\n\n<li>Eksponencijalno smanjenje i upro\u0161\u0107avanje topologije (od V8 najslo\u017eenije do V1 najjednostavnije)<\/li>\n\n\n\n<li>Odabir 8 reprezentativnih varijacija (V1 do V8)<\/li>\n<\/ul>\n\n\n\n<p><strong>Filtriranje i Odabir Modela na CFD Analizu:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Odba\u010dene V1 i V4: Previ\u0161e sli\u010dne modelima V2 i V5 po izgledu u geometriji<\/li>\n\n\n\n<li>Odabrane V2, V3. V5, V6 za potpunu analizu<\/li>\n<\/ul>\n\n\n\n<p><strong>Testiranje Alternativnih Pristupa i Konverzija:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Primarni pristup: .STEP konverzija (Provera Naked Edges \/ Non-Manifold \/ Self-Intersecting)<\/li>\n\n\n\n<li>Alternativa1: Izvoz u .STL format (Nepovoljno za Watertight CFD analizu)<\/li>\n\n\n\n<li>Alternativa2: Grasshopper QuadRemesh\/RebuildMesh (Modeli neupotrebljivi za CFD analizu)<\/li>\n<\/ul>\n\n\n\n<p>Uvoz i Evaluacija u AutoDesk CFD 2027<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>V2, V3, V5, V6 (Prva .STEP iteracija bez Naked Edges) &#8211; Pro\u0161le simulaciju Aerotunela<\/li>\n\n\n\n<li>V7 (Nakon desete .STEP iteracije su i dalje prona\u0111ene Naked Edges) &#8211; Nemogu\u0107e u\u010ditati u simulator<\/li>\n\n\n\n<li>V8 (Nakon druge .STEP iteracije nisu prona\u0111ene Naked Edges) &#8211; U\u010ditana u simulator, ali nemogu\u0107 meshing<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><mark class=\"has-inline-color has-green-color\">INICIJALNO MODELOVANJE F1 BOLIDA U RHINU<\/mark><\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/2da2e53c4155173b80fab8657f000caa.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"736\" height=\"981\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/2da2e53c4155173b80fab8657f000caa.jpg\" alt=\"\" class=\"wp-image-26596\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/2da2e53c4155173b80fab8657f000caa.jpg 736w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/2da2e53c4155173b80fab8657f000caa-225x300.jpg 225w\" sizes=\"auto, (max-width: 736px) 100vw, 736px\" \/><\/a><\/figure>\n\n\n\n<p>Rad na modelu zapo\u010deo je kreiranjem osnove \u0161asije pomo\u0107u <strong>SubDBox<\/strong> komande. Upotrebom opcije <strong>Reflect<\/strong> obezbe\u0111ena je automatska simetrija tela vozila u odnosu na uzdu\u017enu osu. Pomeranjem SubD kontrolnih ta\u010daka oblikovani su nos bolida, prostor za motor i voza\u010dki kokpit.<\/p>\n\n\n\n<p>To\u010dkovi i felne su izmodelovani polaze\u0107i od <strong>Solid Cylinder<\/strong> koji je oblikovan i bu\u0161en <strong>Boolean<\/strong> operacijama. Veze izme\u0111u to\u010dkova i trupa nastale su kombinacijom manjih SubD box elemenata i spajanjem sa cilindri\u010dnim telima. Celokupan sklop je pomo\u0107u komande <strong>Mirror<\/strong> i preciznih referentnih ta\u010daka preslikan na suprotnu stranu vozila. Prednje i zadnje aerodinami\u010dko krilo oblikovani su <strong>Extrude<\/strong> opcijom uz naknadne <strong>Boolean<\/strong> operacije bu\u0161enja i obrade ivica. Retrovizori su izra\u0111eni od ise\u010denih sfera i povezani sa trupom cevastim metalnim nosa\u010dima kreiranim pomo\u0107u <strong>Pipe<\/strong> komande.<\/p>\n\n\n\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-1 wp-block-group-is-layout-flex\">\n<figure class=\"wp-block-image size-large is-resized\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/Screenshot-2026-09-23-031314.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"532\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/Screenshot-2026-09-23-031314-1024x532.png\" alt=\"\" class=\"wp-image-26600\" style=\"width:291px;height:auto\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/Screenshot-2026-09-23-031314-1024x532.png 1024w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/Screenshot-2026-09-23-031314-300x156.png 300w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/Screenshot-2026-09-23-031314-768x399.png 768w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/Screenshot-2026-09-23-031314-1536x798.png 1536w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/Screenshot-2026-09-23-031314-2048x1064.png 2048w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/Screenshot-2026-09-23-031314-1568x815.png 1568w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-2.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"541\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-2-1024x541.png\" alt=\"\" class=\"wp-image-26599\" style=\"width:288px;height:auto\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-2-1024x541.png 1024w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-2-300x159.png 300w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-2-768x406.png 768w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-2-1536x812.png 1536w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-2-2048x1083.png 2048w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-2-1568x829.png 1568w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><mark class=\"has-inline-color has-green-color\">GENERISANJE I REDUKCIJA VARIJACIJA<\/mark><\/strong><\/h2>\n\n\n\n<p>Originalni model je podvrgnut sukcesivnoj primeni alatke <strong>QuadRemesh<\/strong> ukupno 40 puta. Svaka naredna verzija dobijala je znatno gla\u0111u topologiju, jednostavniju formu i manje dimenzije:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Od 40 verzija odabrano je <strong>8 karakteristi\u010dnih varijacija<\/strong>, gde je <strong>V1<\/strong> najjednostavnija (oblikom nalikuje sferi), dok je <strong>V8<\/strong> najslo\u017eenija i najbli\u017ea originalnom F1 bolidu.<\/li>\n\n\n\n<li><strong>Razlog odbacivanja varijacija V1 i V4:<\/strong> Model V1 je odba\u010den jer je geometrijski previ\u0161e nalikovao modelu V2, dok je V4 odba\u010den jer je po formi bio identi\u010dan modelu V5. Time su 4 primarna modela (<strong>V2, V3, V5 i V6<\/strong>) pro\u0161la u dalju detaljnu CFD analizu.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-3.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1456\" height=\"236\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-3-edited.png\" alt=\"\" class=\"wp-image-26602\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-3-edited.png 1456w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-3-edited-300x49.png 300w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-3-edited-1024x166.png 1024w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-3-edited-768x124.png 768w\" sizes=\"auto, (max-width: 1456px) 100vw, 1456px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><mark class=\"has-inline-color has-green-color\">PROBLEM I ZAHTEVI CFD-a PRI UVOZU GEOMETRIJE<\/mark><\/strong><\/h2>\n\n\n\n<p>CFD simulator tra\u017ei potpuno zatvoreno zapreminsko telo, tj. Watertight Solid, bez ijednog otvora i sa jasnom granicom zida.<\/p>\n\n\n\n<p>Prevo\u0111enjem zakrivljene SubD geometrije u <code>.STEP<\/code> format dolazi do mikroodstupanja na spojevima povr\u0161ina, \u0161to stvara nezatvorene ivice, Naked Edges.<\/p>\n\n\n\n<p>Agresivan QuadRemesh na slo\u017eenom modelu (poput V7 i V8) stvara mikro-poligone koje CFD ne mo\u017ee da razre\u0161i, pa stvara pukotine pri generisanju mre\u017ee ili uvozu.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-4.png\"><img loading=\"lazy\" decoding=\"async\" width=\"937\" height=\"246\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-4.png\" alt=\"\" class=\"wp-image-26603\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-4.png 937w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-4-300x79.png 300w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-4-768x202.png 768w\" sizes=\"auto, (max-width: 937px) 100vw, 937px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><mark class=\"has-inline-color has-green-color\">ALTERNATIVNI PRISTUPI I UO\u010cENE GRE\u0160KE U KONVERZIJI<\/mark><\/strong><\/h2>\n\n\n\n<p><strong>Grasshopper QuadRemesh:<\/strong> Isprobana je automatizacija preko Grasshopper-a, ali generisane geometrije uop\u0161te nisu mogle biti importovane u Autodesk CFD program.<\/p>\n\n\n\n<p><strong>.STL vs .STEP konverzija:<\/strong> Testirana je konverzija u <code>.STL<\/code> mesh format umesto <code>.STEP<\/code> brep formata. Me\u0111utim, za precizne prora\u010dune aerotunela u Autodesk CFD-u, <code>.STEP<\/code> se pokazao kao neophodan format za ispravno definisanje granica fluida.<\/p>\n\n\n\n<p><strong>Problem sa Naked Edges:<\/strong> Kod slo\u017eenijih geometrija (poput V7 i V8), prilikom konverzije u <code>.STEP<\/code> format uvek su se pojavljivale gre\u0161ke tipa naked edges. \u010cak i nakon manualne kontrole i popravki u Rhinu, ponovnim eksportom u <code>.STEP<\/code> iste gre\u0161ke su se rekreirale.<\/p>\n\n\n\n<p>Svi modeli koji su uspe\u0161no simulirani u CFD okru\u017eenju (V2, V3, V5, V6) odlikovali su se time \u0161to <strong>nisu imali nijednu gre\u0161ku tipa <em>naked egdes.<\/em><\/strong> nakon prve iteracije konverzije u <code>.STEP<\/code> format.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><mark class=\"has-inline-color has-green-color\">ANALIZA PONA\u0160ANJA SLO\u017dENIH GEOMETRIJA (V7 i V8) U CFD-u <\/mark><\/strong><\/h2>\n\n\n\n<p><strong>Varijacija V7 <\/strong>(1,041 vertices, 1,077 faces)<strong>:<\/strong> Zahtevala je \u010dak 10 iteracija <code>.STEP<\/code> konverzije zbog konstantnog pojavljivanja naked edges gre\u0161aka. Zbog toga je geometriju bilo <strong>nemogu\u0107e uop\u0161te u\u010ditati u CFD simulator<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-9.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"638\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-9-1024x638.png\" alt=\"\" class=\"wp-image-26608\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-9-1024x638.png 1024w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-9-300x187.png 300w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-9-768x478.png 768w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-9.png 1142w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p><strong>Varijacija V8<\/strong> (4,895 vertices, 5,163 faces)<strong>:<\/strong> Iako je predstavljala najdetaljniji model najbli\u017ei originalnom bolidu, uspela je da se importuje nakon 2 iteracije konverzije, ali CFD simulator <strong>nije mogao da generi\u0161e mesh<\/strong>. Simulator nije mogao da razre\u0161i izuzetno sitne i zbijene mre\u017ene elemente.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-10.png\"><img loading=\"lazy\" decoding=\"async\" width=\"989\" height=\"683\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-10.png\" alt=\"\" class=\"wp-image-26609\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-10.png 989w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-10-300x207.png 300w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-10-768x530.png 768w\" sizes=\"auto, (max-width: 989px) 100vw, 989px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><mark class=\"has-inline-color has-green-color\">PORE\u0110ENJE GEOMETRIJE SA REZULTATIMA CFD ANALIZE (V2, V3, V5, V6)<\/mark><\/strong><\/h2>\n\n\n\n<p>Sve \u010detiri uspe\u0161ne simulacije izvedene su pod identi\u010dnim uslovima: ulazna brzina vazduha 20m\/s i 100 iteracija.<\/p>\n\n\n\n<p><strong>V2 (najjednostavnija):<\/strong> 24vertices, 22faces. U CFD-u je generisala <strong>10 656vertices i 40 831meshes<\/strong>. Vreme re\u0161avanja: <strong>915 s<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-group is-vertical is-layout-flex wp-container-core-group-is-layout-2 wp-block-group-is-layout-flex\">\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/Screenshot-2026-09-23-035927.png\"><img loading=\"lazy\" decoding=\"async\" width=\"460\" height=\"158\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/Screenshot-2026-09-23-035927.png\" alt=\"\" class=\"wp-image-26611\" style=\"width:610px;height:auto\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/Screenshot-2026-09-23-035927.png 460w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/Screenshot-2026-09-23-035927-300x103.png 300w\" sizes=\"auto, (max-width: 460px) 100vw, 460px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-14.png\"><img loading=\"lazy\" decoding=\"async\" width=\"644\" height=\"169\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-14.png\" alt=\"\" class=\"wp-image-26615\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-14.png 644w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-14-300x79.png 300w\" sizes=\"auto, (max-width: 644px) 100vw, 644px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<p><strong>V3:<\/strong> 42vertices, 40faces. U CFD-u: <strong>11 097vertices i 41 067meshes. <\/strong>Vreme re\u0161avanja: <strong>882 s<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-group is-vertical is-layout-flex wp-container-core-group-is-layout-3 wp-block-group-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-6.png\"><img loading=\"lazy\" decoding=\"async\" width=\"869\" height=\"485\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-6.png\" alt=\"\" class=\"wp-image-26605\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-6.png 869w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-6-300x167.png 300w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-6-768x429.png 768w\" sizes=\"auto, (max-width: 869px) 100vw, 869px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-13.png\"><img loading=\"lazy\" decoding=\"async\" width=\"685\" height=\"102\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-13.png\" alt=\"\" class=\"wp-image-26614\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-13.png 685w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-13-300x45.png 300w\" sizes=\"auto, (max-width: 685px) 100vw, 685px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<p><strong>V5:<\/strong> 110vertices, 110faces. U CFD-u: <strong>14 185vertices i 52 521meshes. <\/strong>Vreme re\u0161avanja: <strong>921 s<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-group is-vertical is-layout-flex wp-container-core-group-is-layout-4 wp-block-group-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-7.png\"><img loading=\"lazy\" decoding=\"async\" width=\"892\" height=\"642\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-7.png\" alt=\"\" class=\"wp-image-26606\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-7.png 892w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-7-300x216.png 300w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-7-768x553.png 768w\" sizes=\"auto, (max-width: 892px) 100vw, 892px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-15.png\"><img loading=\"lazy\" decoding=\"async\" width=\"691\" height=\"70\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-15.png\" alt=\"\" class=\"wp-image-26616\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-15.png 691w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-15-300x30.png 300w\" sizes=\"auto, (max-width: 691px) 100vw, 691px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<p><strong>V6 (najslo\u017eenija):<\/strong> 514vertices, 513faces. U CFD-u: <strong>6,490 \u010dvorova i 21,673 elementa<\/strong>. Vreme re\u0161avanja: <strong>1,052 s<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-group is-vertical is-layout-flex wp-container-core-group-is-layout-5 wp-block-group-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-8.png\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"676\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-8.png\" alt=\"\" class=\"wp-image-26607\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-8.png 960w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-8-300x211.png 300w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-8-768x541.png 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-16.png\"><img loading=\"lazy\" decoding=\"async\" width=\"677\" height=\"75\" src=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-16.png\" alt=\"\" class=\"wp-image-26617\" srcset=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-16.png 677w, https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-content\/uploads\/2026\/09\/slika-16-300x33.png 300w\" sizes=\"auto, (max-width: 677px) 100vw, 677px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<p><strong><mark class=\"has-inline-color has-red-color\">MAX STATI\u010cKI PRITISAK: <\/mark><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>V2:<\/strong> 3,958.93 dyne\/cm2<\/li>\n\n\n\n<li><strong>V3:<\/strong> 3,233.41 dyne\/cm2<\/li>\n\n\n\n<li><strong>V5:<\/strong> 2,933.12 dyne\/cm2<\/li>\n\n\n\n<li><strong>V6:<\/strong> 1,811.55 dyne\/cm2<\/li>\n<\/ul>\n\n\n\n<p>Postoji jasan trend smanjenja vr\u0161nog pritiska kako geometrija prelazi iz jednostavne &#8221;blob&#8221; forme (V2) ka aerodinami\u010dki ra\u0161\u010dlanjenijoj formi F1 bolida (V6).<\/p>\n\n\n\n<p><mark class=\"has-inline-color has-red-color\"><strong>BRZINE STRUJANJA PO OSAMA (x, y, z):<\/strong><\/mark><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>V2:<\/strong> Maksimalna popre\u010dna brzina Vy = 3,204.25 cm\/s, uz uzdu\u017enu Vx = 1,498.48 cm\/s<\/li>\n\n\n\n<li><strong>V3:<\/strong> Vx = 939.53cm\/s, Vy = 2,938.19 cm\/s, Vz = 992.41cm\/s<\/li>\n\n\n\n<li><strong>V5:<\/strong> Vx = 595.14 cm\/s, Vy = 2,963.94 cm\/s, Vz = 841.37 cm\/s<\/li>\n\n\n\n<li><strong>V6:<\/strong> Vx = 966.25 cm\/s, Vy = 2,784.67 cm\/s, Vz = 715.01cm\/s<\/li>\n<\/ul>\n\n\n\n<p><strong><mark class=\"has-inline-color has-red-color\">PRITISAK NA POVR\u0160INU VOZILA:<\/mark><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span data-path-to-node=\"30,0,0,0\" style=\"font-family: Google Sans Text, sans-serif !important;line-height: 1.15 !important;margin-top: 0px !important;margin-left: 0px !important;margin-right: 0px !important\"><b data-path-to-node=\"30,0,0,0\" data-index-in-node=\"0\" style=\"font-family: Google Sans Text, sans-serif !important;line-height: 1.15 !important;margin-top: 0px !important;margin-left: 0px !important;margin-right: 0px !important\">V2:<\/b> <span class=\"math-inline\" data-math=\"y\" data-index-in-node=\"21\" style=\"font-family: Google Sans Text, sans-serif !important;line-height: 1.15 !important;margin-top: 0px !important;margin-left: 0px !important;margin-right: 0px !important\">po y<\/span>-osi iznosi <span class=\"math-inline\" data-math=\"3.15 \\cdot 10^{11} \\text{ dynes}\" data-index-in-node=\"34\" style=\"font-family: Google Sans Text, sans-serif !important;line-height: 1.15 !important;margin-top: 0px !important;margin-left: 0px !important;margin-right: 0px !important\">3.15 x 10^11 dynes<\/span>, uz silu smicanja od <span class=\"math-inline\" data-math=\"1.60 \\cdot 10^{11} \\text{ dynes}\" data-index-in-node=\"88\" style=\"font-family: Google Sans Text, sans-serif !important;line-height: 1.15 !important;margin-top: 0px !important;margin-left: 0px !important;margin-right: 0px !important\">1.60 x 10^11 dynes<\/span><\/span><\/li>\n\n\n\n<li><strong>V3:<\/strong> po y-osi raste na 1.60 x 10^12 dynes, a po z-osi pada na -5.93 x 10^12 dynes<\/li>\n\n\n\n<li><strong>V5:<\/strong> po y-osi je 1.76 x 10^12 dynes, po z-osi -1.48 x 10^13 dynes<\/li>\n\n\n\n<li><strong>V6:<\/strong> po y-osi dosti\u017ee 7.99 x 10^12 dynes, po z-osi iznosi -4.15 x 10^13 dynes<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><mark class=\"has-inline-color has-green-color\">ZAKLJU\u010cAK<\/mark><\/strong><\/h2>\n\n\n\n<p>Prisustvo gre\u0161aka poput naked edges onemogu\u0107ava izvo\u0111enje simulacije vetra u CFD okru\u017eenju. Uspe\u0161ni modeli su isklju\u010divo oni koji su pro\u0161li \u010distu <code>.STEP<\/code> konverziju bez geometrijskih prekida.<\/p>\n\n\n\n<p>Preveliki broj poligon\/faces elemenata dobijen nakon smanjenja QuadRemesh alatkom (primeri V7 i V8) dovodi do kraha u CFD-u \u2013 bilo pri samom u\u010ditavanju ili pri poku\u0161aju generisanja mre\u017ee fluida.<\/p>\n\n\n\n<p>Model V6, iako geometrom slo\u017eeniji, produkuje zna\u010dajno manji maksimalni lokalni pritisak u pore\u0111enju sa jednostavnijim modelom V2, omogu\u0107avaju\u0107i optimalnije strujanje vazduha oko bolida.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>WORKFLOW Modelovanje u Rhinu (komande): Generisanje 40 iteracija u Rhinu: Filtriranje i Odabir Modela na CFD Analizu: Testiranje Alternativnih Pristupa i Konverzija: Uvoz i Evaluacija u AutoDesk CFD 2027 INICIJALNO MODELOVANJE F1 BOLIDA U RHINU Rad na modelu zapo\u010deo je kreiranjem osnove \u0161asije pomo\u0107u SubDBox komande. Upotrebom opcije Reflect obezbe\u0111ena je automatska simetrija tela vozila&hellip; <a class=\"more-link\" href=\"https:\/\/www.arhns.uns.ac.rs\/givsf\/uporedna-aerodinamicka-analiza-iterativnih-modela-f1-bolida-u-autodesk-cfd-simulatoru-faza-iii\/\">Continue reading <span class=\"screen-reader-text\">Uporedna aerodinami\u010dka analiza iterativnih modela F1 bolida u Autodesk CFD simulatoru &#8211; FAZA III<\/span><\/a><\/p>\n","protected":false},"author":728,"featured_media":26619,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"[]"},"categories":[739],"tags":[],"coauthors":[719],"class_list":["post-26595","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-25-26-radovi","entry"],"_links":{"self":[{"href":"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-json\/wp\/v2\/posts\/26595","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-json\/wp\/v2\/users\/728"}],"replies":[{"embeddable":true,"href":"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-json\/wp\/v2\/comments?post=26595"}],"version-history":[{"count":1,"href":"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-json\/wp\/v2\/posts\/26595\/revisions"}],"predecessor-version":[{"id":26618,"href":"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-json\/wp\/v2\/posts\/26595\/revisions\/26618"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-json\/wp\/v2\/media\/26619"}],"wp:attachment":[{"href":"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-json\/wp\/v2\/media?parent=26595"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-json\/wp\/v2\/categories?post=26595"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-json\/wp\/v2\/tags?post=26595"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.arhns.uns.ac.rs\/givsf\/wp-json\/wp\/v2\/coauthors?post=26595"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}