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热声振荡的格子气模拟
引用本文:张晓青,蒋华,胡兴华,柳玉林.热声振荡的格子气模拟[J].华中科技大学学报(自然科学版),2007,35(7):85-88.
作者姓名:张晓青  蒋华  胡兴华  柳玉林
作者单位:华中科技大学,能源与动力工程学院,湖北,武汉,430074
摘    要:采用二维九速的格子气模型模拟热声振荡,建立了完备的多体碰撞规则,提供了粘性和热边界的处理方法.对不同热源温度的热声振荡起振特性进行了模拟,同时也数值模拟研究了板叠两端温度随时间的响应过程.研究结果显示,碰撞规则完善与否会影响格子气的模拟结果,系统中的温度场对板叠温差的扰动存在响应滞后,温差直接影响热声振荡的起振特性.此外,低温热源对格子气模型噪声的影响更为敏感.

关 键 词:热声振荡  格子气  二维九速模型  碰撞规则  板叠  热声振荡  格子气  模拟结果  lattice  oscillation  thermoacoustic  敏感  噪声  低温热源  响应滞后  存在  扰动  温差  温度场  系统  影响  规则完善  碰撞  显示  模拟研究
文章编号:1671-4512(2007)07-0085-04
修稿时间:2006-06-26

Simulation of thermoacoustic oscillation with lattice gas
Zhang Xiaoqing,Jiang Hua,Hu Xinhua,Liu Yulin.Simulation of thermoacoustic oscillation with lattice gas[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2007,35(7):85-88.
Authors:Zhang Xiaoqing  Jiang Hua  Hu Xinhua  Liu Yulin
Institution:College of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Abstract:Two-dimensional 9-bit lattice gas model was applied to simulate thermoacoustic oscillation. A complete multi-particle collision rule was established, and a method for dealing with viscous and thermal boundary was provided in the present model. The onset behaviour of thermoacoustic osillation with various heat source temperatures was simulated, and the time responses of the temperatures at both ends of stack were also investigated numerically. The studied results demonstrate whether the collision rule is perfect or not influenced the simulated results from lattice gas model. Temperature field in the system had a lagging response to the disturbance of temperature difference across the stack, and the temperature difference influenced the onset behaviors of thermoacoustic oscillation directly. The heat source with lower temperature was more sensitive to the noise from lattice gas model.
Keywords:thermoacoustic oscillations lattice gas  two-dimensional nine-bit models collision rule  stack
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