2012/09/10 by Shayak Bhattacharjee
Engineering · Mathematics · Physics and Astronomy · #Biomimetic flight and propulsion mechanisms #Collision #Drag #Drag coefficient #Flow (mathematics) #Fluid dynamics and aerodynamics studies #Gas Dynamics and Kinetic Theory #Kinetic energy #Thrust #Work (physics) #physics.class-ph
paper · pdf · doi:10.1088/0143-0807/33/6/1579
published as Eur. J. Phys. 33, 1579-1586 (2012)
openalex publication_date 2012/09/10 · arxiv created 2012/11/04 · arxiv updated 2015/06/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The performance of a fan is usually estimated from hydrodynamical considerations. The calculations are long and involved and the results are expressed in terms of three affinity laws. In this work we use kinetic theory to attack this problem. A hard sphere collision model is used, and subsequently a correction to account for the flow behaviour of air is incorporated. Our calculations prove the affinity laws and provide numerical estimates of the air delivery, thrust and drag on a rotating fan.