Effect of Aerodynamics On Car Fuel Economy

Tema ovog rada je utjecaj aerodinamike automobila na potrošnju goriva. Završni rad je podijeljen na teorijski dio i na praktični dio. Teorijski dio prati razvoj aerodinamike i automobila od samih početaka te kako su se oni zajedno razvijali kroz godine. Također dio rada se bavi CFD numeričkim simulacijama. Praktični dio se sastoji od izratka dva različita pojednostavljena modela automobila u programu Autodesk Inventor, izrade mreže u programu Hypermesh i simulacija u programu Virtual Wind Tunnel. Simulacije različitih modela automobila u različitim uvjetima dale su zanimljive rezultate. Koeficijent otpora smo kraju iskoristili i pomoću formula za potrošnju goriva izračunali razliku masene potrošnje goriva.The topic of this paper is the „Effect of aerodynamics on car fuel economy“. The final paper is divided into theoretical part and practical part. Theoretical part follows development of aerodynamics and cars from the very beginning and their joint advancing through years. The second part of paper is focused on CFD numerical simulations. Practical part consists of two different simplified car models made in Autodesk Inventor, meshing in program Hypermesh and lastly simulations in program Virtual Wind Tunnel. Simulations of car models in different conditions gave interesting results. Results such as drag coefficient were used through formulas for fuel economics which gave us s difference between mass gas consumption