A Numerical Investigation on Performance Enhancement of Air Motor Using Computational Fluid Dynamics

摘要

Modern industry uses computational methodology to great extent and these methodologies reduces cost, time and reduces the difficulties involved in experimental testing procedures. With the exceptional advantages like having insight, fore-sight computational methodologies almost take over experimental techniques when the later become impossible in many cases. In this work computational fluid dynamics (CFD) is utilized to understand the inherent complex hydrodynamic behavior of rotor-casing interaction and its influence on the power and torque characteristics of the air motor. A parametric study is executed using one of the design of experiments (DOE) techniques called Taguchi method, by varying different parameters such as number of vanes, injection angle at inlet and blade inclination angle and optimum configuration is achieved at the pressure of 4.2 bar at 2000rpm.