Numerical Simulation of the Flow Around a Motorcycle

U prvome dijelu završnoga rada je provedena teorijska analiza opstrujavanja fluida te su definirane teorijske osnove aerodinamike kao što su otpor i aerodinamički uzgon. U nastavku je slijedila izrada geometrije krila u Catii V5 za koju se je kasnije izradila mreža u programu HyperMesh. Detaljno je opisan postupak izrade mreže te numerička simulacija optjecanja koristeći Virtual Wind Tunnel. Dobiveni rezultati su zatim analizirani i slikovito prikazani pomoću post-processora AcuField View. Izvršena je analiza turbulentnog strujanja zraka oko dizajnirane geometrije krila s i bez vršnih krilaca. Na kraju rada je provedena usporedba rezultata dobivenih opstrujavanjem krila pod 15° i pod 10° u odnosu na horizontalnu podlogu.In the first part of the final paper, a theoretical analysis of fluid flow was performed and the theoretical foundations of aerodynamics such as drag and lift were defined. The following was the creation of the wing geometry in the Catia V5 for which a mesh in HyperMesh was later created. The procedure for creating the mesh and the numerical simulation of the airflow using the Virtual Wind Tunnel are described in detail. The results obtained were then analyzed and illustrated with AcuField View post-processor. An analysis of turbulent airflow around the designed wing geometry with and without the tip wings was performed. At the end of the paper, the results obtained by airflow around the wings at the angles of 15° and 10° from horizontal surface were compared