Many patents have suggested that spinning the aircraft wheel before touchdown would lessen tyre wear as indicated by landing smoke and rubber deposites on the runway caused by skidding wheel at the point of impact. In this paper, the required torque to spin the aircraft wheel at approach speed has been calculated using ANSYS Workbench CFX, which is used to determine the wheel aerodynamic forces...

The main objective of the present study is to demonstrate accurate low frequency transient turbulent combustion modeling. For accurate flame dynamics some improvements were made to the standard TFC combustion model for lean premixed combustion. With use of a 1D laminar flamelet code, predictions have been made for the laminar flame speed and the critical strain rate to improve the TFC (Turbulen...

The computational fluid dynamics software, CFX5.5 is employed to determine dispersions of emissions from vehicles traversing the streets. Information on the layouts and heights of buildings in the selected area is contained in a digitized map layer of buildings. The Geographic Information System software, ArcView 3.2a, with its programming facility, Avenue, has been used to extract the coordina...

The paper presents a validated CFD model for the flow in a bench-scale spinner flask that features a centrally-located magnet-driven impeller. Model development found that use of the immersed solid mesh method resulted in better correspondence with observations and μPIV measurements than the more established sliding mesh method in ANSYS-CFX. Analysis of spatial distributions suggested stresses ...

The interfacial area per unit volume is one of the key parameters for the design of multiphase reactors. In this work a population balance approach is applied to calculate the interfacial area density in a bubble column. The resulting transport equation for the arithmetic bubble volume is coupled with the balance equations for mass and momentum. In addition the physical absorption of the gas ph...