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	声波法测量炉内温度场有限元模拟研究
	李言钦 ; 姬会东 ; 周俊杰 ; 曹海亮 ; 钟委 ; 周怀春 ; LI Yanqin ; JI Huidong ; ZHOU Junjie ; CAO Hailiang ; ZHONG Wei ; ZHOU Huaichun
	2016-03-30 ; 2016-03-30
关键词	声波法 有限元 声线 温度场 传播时间 architectural design-planning campus yard around yard yard to yard yard across yard TK311
其他题名	Finite Element Simulation on Acoustic Measurement of the In-furnace Temperature Field
中文摘要	根据切圆炉内典型温度分布特征建立了高斯二维温度场模型,采用有限元软件Comsol并基于声波动方程理论模拟了脉冲声波在温度场中的传播过程,获得了波阵面在相应温度分布下的可视化结果,利用互相关函数法计算了声波在场内的传播时间.作为检验,建立了声线理论模型,并进行基本正确性验证.由声线理论模型得到模拟温度场内声波路径分布,并通过积分法得到理论声波传播时间.结果表明:由波动方程模型模拟出的高斯温度场中的声波传播时间普遍比理论解偏大,误差均在1%以内;误差原因在于数值求解波动方程模型中产生的声源信号伪前移现象,且声源处网格越密、温度越高,伪前移量越大.; With the two-dimensional Gaussian model built according to features of typical temperature field in a tangential furnace,the propagation of a pulse acoustic wave in the temperature field was simulated with software Comsol based on the theory of wave equation,during which visualization of the acoustic wave fronts inside the field was achieved,while the propagation time was calculated using cross-correlation method.For verification purposes,a model based on the principle of sound ray was developed and fundamentally tested,with which the distribution of acoustic wave paths was determined and the theoretic sound propagation time was calculated by integration method.Results show that the propagation time in the temperature field simulated with wave-equation model appears a bit longer than theoretic solutions.The errors are generally below 1%in the simulation,which are resulted from pseudo forward offset of sound source signals,and the minor the mesh or the higher the temperature is,the more the pseudo offset will be.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/145003]
专题	清华大学
推荐引用方式 GB/T 7714	李言钦,姬会东,周俊杰,等. 声波法测量炉内温度场有限元模拟研究[J],2016, 2016.
APA	李言钦.,姬会东.,周俊杰.,曹海亮.,钟委.,...&ZHOU Huaichun.(2016).声波法测量炉内温度场有限元模拟研究..
MLA	李言钦,et al."声波法测量炉内温度场有限元模拟研究".(2016).

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