ライブラリ登録: Guest
ICHMT DL ホーム 今年 アーカイブ 執行委員会 熱・物質移動国際センター

EXPERIMENTAL STUDY OF EQUIVALENCE RATIO INFLUENCE ON THERMO-ACOUSTIC INSTABILITY IN GAS TURBINES

DOI: 10.1615/ICHMT.2009.HeatTransfGasTurbSyst.180
8 pages

Nasser Seraj Mehdizadeh
Aerospace Engineering Department, Amirkabir University of Technology, Center of Excellence in Computational Aerospace, Engineering, Tehran, Iran

Nozar Akbari
Center of Excellence in Computational Aerospace Engineering, Aerospace Eng. Dept. - Shahid Sattari University of Aeronautical Engineering, Iran

Reza Ebrahimi
Aerospace Eng. Dept. - Khaje Nasir Toosi University of Technology Tehran, Iran

要約

Premixed combustion is widely used for simulation of combustion chambers of gas turbines, utilized for low NOx emission applications. However, this category of gas turbines is susceptible to combustion instability. In this regard there are limited works, which are performed recently. Therefore, the maim aim of this investigation is focused on the influence of equivalence ratio on thermo-acoustic instability in gas turbine combustion chambers. An experimental approach is applied for this study.
For this purpose, an experimental combustion chamber is designed and fabricated and various experiments are planned and performed in order to achieve the better understanding of combustion chamber behavior during stable and unstable operations. Moreover, the experimental results are compared with Rayleigh criteria, which demonstrated good agreement between them.
In order for identifying instable conditions, state space distributions of the pressure oscillations are depicted for diverse operating conditions.

ICHMT Digital Library

Bow shocks on a jet-like solid body shape. Thermal Sciences 2004, 2004. Pulsed, supersonic fuel jets - their characteristics and potential for improved diesel engine injection. PULSED, SUPERSONIC FUEL JETS - THEIR CHARACTERISTICS AND POTENTIAL FOR IMPROVED DIESEL ENGINE INJECTION
View of engine compartment components (left). Plots of temperature distributions in centreplane, forward of engine (right). CHT-04 - Advances in Computational Heat Transfer III, 2004. Devel... DEVELOPMENT AND CURRENT STATUS OF INDUSTRIAL THERMOFLUIDS CFD ANALYSIS
Pratt & Whitney's F-135 Joint Strike Fighter Engine under test in Florida is a 3600F class jet engine. TURBINE-09, 2009. Turbine airfoil leading edge stagnation aerodynamics and heat transfe... TURBINE AIRFOIL LEADING EDGE STAGNATION AERODYNAMICS AND HEAT TRANSFER - A REVIEW
Refractive index reconstructed field. (a) Second iteration. (b) Fourth iteration. Radiative Transfer - VI, 2010. Theoretical development for refractive index reconstruction from a radiative ... THEORETICAL DEVELOPMENT FOR REFRACTIVE INDEX RECONSTRUCTION FROM A RADIATIVE TRANSFER EQUATION-BASED ALGORITHM
Two inclusion test, four collimated sources. Radiative Transfer - VI, 2010. New developments in frequency domain optical tomography. Part II. Application with a L-BFGS associated to an inexa... NEW DEVELOPMENTS IN FREQUENCY DOMAIN OPTICAL TOMOGRAPHY. PART II. APPLICATION WITH A L-BFGS ASSOCIATED TO AN INEXACT LINE SEARCH