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Simulation study of mixing characteristics of RQL combustor based on equivalent theory(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2013年02期
Page:
19-23
Research Field:
研究与设计
Publishing date:

Info

Title:
Simulation study of mixing characteristics of RQL combustor based on equivalent theory
Author(s):
YU Liang;  YUAN Shu-sheng
Naval Aeronautical and Astronautical University, Yantai 264001, China
Keywords:
RQL combustor;  turbulence flow field;  RNG k-ε model;  temperature equivalent;  numerical simulation
PACS:
V434+.13
DOI:
-
Abstract:
RNG k-ε turbulent model was applied to the numerical simulation of turbulent mixing processes in a RQL(rich-burn/quick-quench/lean-burn) gas turbine combustor. The influence of different mixing angle and mixing jet velocity on mixing characteristics of RQL combustor is discussed based on the concept of equivalent isothermal flow, and according to the analysis results of internal temperature of mixing flow field, temperature distribution near wall region and temperature at outlet. SIMPLE algorithm was used to solve the finite difference equations. The calculations are in agreement with experimental data. The research results indicate that it is obvious that the mixing incident angle and velocity affect the high-temperature mixing flow zone location inside the RQL combustor, the temperature on wall surface and the temperature distribution at the outlet.

References:

[1]DOERR T, HENNECKE D K. The mixing process in the reacting zone of the Rich-Lean-Combustion concept[C]// Proceeding of the 81st Symp of the Propulsion and Energetics Panel. Fiuggi, Italy: AGARD, 1993: 54-60.
[2]KALOGIROU D I, PAPAILIOU D D. Turbulent heat transfer processes in a multiple jet confined cross flow configuration [C]// Proceeding of 55 Eurotherm Seminar on Heat Transfer in Single Flows. Greece: ESHTSF, 1997: 1-9.
[3]HEITOR M V. Velocity and scalar measurements in model and real gas turbine combustors[J]. Instrumentation for Combustion and Flow in engines, 1989, 154: 38-44.

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Last Update: 1900-01-01