A Study of Aerodynamic Performance of a Contra Rotating Axial Compressor Stage

D.S. Pundhir; P.B. Sharma

doi:10.14429/dsj.42.4381

D.S. Pundhir Department of Mechanical Engineering, Indian Institute of Technology, New Delhi
P.B. Sharma Department of Mechanical Engineering, Indian Institute of Technology, New Delhi

DOI: https://doi.org/10.14429/dsj.42.4381

Keywords: Contra rotors, Aerodynamic performance, Aerodynamics

Abstract

This article presents an experimental investigation into the effect of speed ratio and axial spacing between contra-rotors on the aerodynamic performance of a contra-stage. The traverses of flow structure and pressure variation are examined at upstream of the first and the second rotor to illustrate the effect of speed ratio and axial spacing on the aerodynamic performances. The traverse results are analysed to obtain relative total head loss and blade element efficiency of the contra-rotors. The reveals that the aerodynamics of a contra-stage is significantly affected by the speed ratio as well as the axial spacing between contra-rotors.

Author Biographies

D.S. Pundhir, Department of Mechanical Engineering, Indian Institute of Technology, New Delhi

Dr DS Pundhir is a Senior Scientific Officer at the Department of Mechanical Engineering, IIT, Delhi. He co mp le ted his PhD fro m lIT. Delhi, in 1991. He has worked on the vario us resear ch pro blem s in the area of axial compressor and has several research papers to his credit ,published in both nation al a nd international journals . The are as of his interest include low speed aerodynamics and aeroacoustics of aerocompres sor.

P.B. Sharma, Department of Mechanical Engineering, Indian Institute of Technology, New Delhi

Dr PH Sharma, a former Professor at the De pa rtment of Mechanical Engineering, IIT, Delhi, is presently the Principal, Delhi College of Enginee ring . He o bta ined his Masters Degree and PhD from the University of Birmingham, UK. He ha s de veloped facilities for advanced research in the area of axial compressors at lIT, De lhi , unde r the proj ects sponso red by the Aeronautics R&D Board , DRDO. Dr Sharma has published several research paper s; his research work on contra-rotating axial compressor has rec eived world-wide acclamation