Fluid Mechanics & Aerodynamics

Fluid Mechanics & Aerodynamics

A Turboprop Engine Modeling in the Design and Off-Design Conditions to Investigate the Effect of Combustion Chamber Defects on its Performance

Document Type : Original Article

Authors
Mohammad Mazidi Sharfabadi 1
Ali Seraj 2
Mohammad Ebrahim Kahd Narouei 3
1 Faculty Member/RIPI
2 Faculty of Mechanical Engineering, University of Tehran
3 Mechanical Engineering Department, Islamic Azad University Varamin Pishva Branch
Abstract
In this paper, the thermodynamic modeling and analysis of various components of a turboprop engine and their relation in the steady-state design and off-design performances are addressed. An algorithm is presented and a computer code is developed for the analysis of the cycle in design and off-design conditions. Then off-design performance curves are plotted for different turbine inlet temperatures, flight elevations and Mach numbers and their results are interpreted. The results are compared and validated with the results of GasTurb software. In addition, the effects of the combustion chamber defects on the performance of the engine are investigated. The results of this paper can be used as the first step in the study of the performance and upgrading of these engines. The results of this study show that the specific fuel consumption will rise by 14% for a 10% increase in the combustion chamber pressure drop. Furthermore, the specific fuel consumption increases by 13% and the engine power reduces by 17.5% for a 10% reduction in the combustion efficiency.
Keywords
Modeling
Gas Turbine Performance
Turboprop Engine
Combustion Chamber Defects
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Fluid Mechanics & Aerodynamics
Volume 10, Issue 1 - Serial Number 27
spring and summer
December 2021
Pages 99-114

  • Receive Date 19 June 2020
  • Revise Date 08 July 2021
  • Accept Date 06 October 2021
  • Publish Date 22 May 2021