Effect of density ratio on the performance of purge flow in linear cascade arrangement

International Research and Innovation Summit 2017

Abdullah, Kamil^1 ; Hassan, Haswira^1 ; Pauzi, Muzzammil^1

Center for Energy and Industrial Environment Studies, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor, Malaysia^1

关键词: Aerodynamic loss;    Different densities;    End-wall region;    Film cooling effectiveness;    Influence of density;    Linear cascade;    Mass flow rate;    Pressure loss coefficient;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/226/1/012151/pdf
DOI  :  10.1088/1757-899X/226/1/012151

来源: IOP

【 摘 要 】

Purge flow has been recognized as potential solution to provide cooling protection at the end wall region of a turbine blade arrangement. The present paper investigates the effects of density ratio on the performance of purge flow in linear cascade arrangement. Computational fluid dynamics has been manipulate to investigate the pressure loss coefficient and the film cooling effectiveness produces by purge flow at three different density ratio value. Two mass flow rate of the purge have been considered in the present study. The investigation indicates no influence of density ratio on aerodynamic losses of the purge flow however petite improvement in terms of area average film cooling effectiveness have been observed at higher density ratio value.