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RESEARCH PAPERS: Gas Turbines: Combustion and Fuels

Preliminary Gas Turbine Combustor Design Using a Network Approach

[+] Author and Article Information
P. J. Stuttaford, P. A. Rubini

School of Mechanical Engineering, Cranfield University, Cranfield, Bedfordshire, MK43 OAL, United Kingdom

J. Eng. Gas Turbines Power 119(3), 546-552 (Jul 01, 1997) (7 pages) doi:10.1115/1.2817019 History: Received February 01, 1996; Online November 19, 2007

Abstract

The preliminary design process of a gas turbine combustor often involves the use of cumbersome, geometry restrictive semi-empirical models. The objective of this analysis is the development of a versatile design tool for gas turbine combustors, able to model all conceivable combustor types. A network approach is developed that divides the flow into a number of independent semi-empirical subflows. A pressure-correction methodology solves the continuity equation and a pressure-drop/flow rate relationship. The development of a full conjugate heat transfer model allows the calculation of flame tube heat loss in the presence of cooling films, annulus heat addition, and flame tube feature heat pick-up. A constrained equilibrium calculation, incorporating mixing and recirculation models, simulates combustion processes. Comparison of airflow results to a well-validated combustor design code showed close agreement. The versatility of the network solver is illustrated with comparisons to experimental data from a reverse flow combustor.

Copyright © 1997 by The American Society of Mechanical Engineers
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