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research-article

Experimental Investigation of Inlet Distortion Effect on Performance of a Micro Gas Turbine

[+] Author and Article Information
Alireza Naseri

Department of Aerospace Engineering, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Ave., Tehran 15875-4413, Iran
naseri.alireza@aut.ac.ir

Shervin Sammak

Center for Research Computing, University of Pittsburgh, 3700 Ohara St., Pittsburgh, PA 15261
shervin.sammak@pitt.edu

Masoud Boroomand

Department of Aerospace Engineering, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Ave., Tehran 15875-4413, Iran
boromand@aut.ac.ir

Alireza Alihosseini

Department of Aerospace Engineering, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Ave., Tehran 15875-4413, Iran
aliralih@aut.ac.ir

Abolghasem M. Tousi

Department of Aerospace Engineering, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Ave., Tehran 15875-4413, Iran
tousi@aut.ac.ir

1Corresponding author.

ASME doi:10.1115/1.4039057 History: Received December 05, 2017; Revised December 08, 2017

Abstract

An experimental study has been carried out to determine how inlet total-pressure distortion affects the performance of a micro gas turbine. An inlet simulator is designed and developed to produce and measure distortion patterns at the inlet to the gas turbine. An Air Jet Distortion Generator is used to produce non-uniform flow patterns and total pressure probes are installed to measure steady-state total-pressure distribution at the inlet. A set of wind tunnel tests have been performed to confirm the fidelity of distortion generator and measuring devices. Tests are carried out with the gas turbine exposed to inlet flow with 60-degree, 120-degree, and 180-degree circumferential distortion patterns with different distortion intensities. The Performance of the gas turbine has been measured and compared with that of clean inlet flow case. Results indicate that the gas turbine performance can be affected significantly facing with intense inlet distortions.

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