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TECHNICAL BRIEF

Effect of Vortex Flow on Heat Transfer to Combustion Chamber Wall

[+] Author and Article Information
A. Ghafourian

Department of Aerospace Engineering, Sharif University of Technology, P.O. Box 11365-9567, Tehran, IranGhafourian@sharif.edu

M. H. Saidi1

School of Mechanical Engineering (CEEC), Sharif University of Technology, P.O. Box 11365-9567, Tehran, IranSaman@sharif.edu

S. Jahangirian

 Sharif University of Technology, P.O. Box 11365-9567, Tehran, IranJahangirian@mehr.sharif.edu

M. Abarham

 Sharif University of Technology, P.O. Box 11365-9567, Tehran, IranAbarham@mehr.sharif.edu

1

To whom correspondence should be addressed.

J. Eng. Gas Turbines Power 129(2), 622-624 (Jul 28, 2006) (3 pages) doi:10.1115/1.2431386 History: Received August 14, 2005; Revised July 28, 2006

A new experimental facility was designed, fabricated, and tested to model and study the effect of bidirectional swirl flow on the rate of heat transfer to combustion chamber walls. Reduction of this heat transfer can result in time and cost of design and fabrication methods of combustion chambers. The experimental study was performed using propane and air with oxygen as fuel and oxidizer, respectively. For similar flow rates, in cases where bidirectional flow was present, wall temperature reductions of up to 70% were observed. In cases where only some of the oxidizer was injected from the chamber end to generate the bidirectional swirl flow, the lowest wall temperature existed. This can be due to better mixing of fuel and oxidizer and absence of hot spots in the combustion core.

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Copyright © 2007 by American Society of Mechanical Engineers
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Figures

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Figure 1

Bidirectional swirl flow in a chamber

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Figure 2

Longitudinal chamber wall temperature in three positions of T1: base, T2: middle, T3: head versus time, ṁfuel=0.61gr∕s

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Figure 3

Wall temperature variation (T2) versus time for three different cases, ϕ=0.8, x=0.35, ṁair=10.4gr∕s, ṁoxygen=2.5gr∕s, ṁfuel=1.07gr∕s

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Figure 4

CO2 Percentage in combustion products for three different cases

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