year 11, Issue 2 (Journal of Acoustical Engineering Society of Iran 2024)
مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2024, 11(2): 55-65 |
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Akhtardansh M A, Khademorezaeian M, Farshchi M. Interaction of acoustic waves with a laminar counterflow flame. مجله انجمن علوم صوتی ایران (مهندسی صوتیات سابق) 2024; 11 (2) : 8
URL: http://joasi.ir/article-1-274-en.html
URL: http://joasi.ir/article-1-274-en.html
Abstract: (612 Views)
Acoustic waves can affect the heat release of a flame, also and any disturbance in the heat release of a flame will cause the production of pressure waves. If the acoustic field and heat release fluctuations are coupled, combustion instability will occur. Understanding the interaction of acoustics and flame dynamics will lead to a better understanding of the factors affecting the phenomenon of combustion instability. In this paper, the interaction of acoustic waves with a counterflow flame has been investigated experimentally. The effects of changing the frequency and amplitude of acoustic waves on the structure of a simple flame have been investigated. It has been shown that by increasing the frequency of flame excitations compared to the steady flame, the average flame thickness, area, and heat release will increase, and the position of the center of the heat release will be lower. The response of a counterflow flame was calculated and shown that at low frequencies the magnitude of the response function tends to unity value. As the frequency increases, the value of the response function weakens. Increasing the amplitude of acoustic oscillations has little effect on the magnitude of the flame response and weakens the response at high frequencies.
Article number: 8
Keywords: Combustion Instability, Acoustic, Counterflow Flame, Wave-Flame Interaction, Flame Response Function.
Type of Study: Research |
Subject:
General
Received: 2023/08/22 | Accepted: 2024/02/18 | Published: 2024/11/22
Received: 2023/08/22 | Accepted: 2024/02/18 | Published: 2024/11/22
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