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基于格子Boltzmann方法的封闭三角腔自然对流的数值模拟
Authors
杨超
毛在砂
雍玉梅
Publication date
1 January 2009
Publisher
Abstract
建立了二维不可压缩D2G9格子Boltzmann模型,耦合二维TD2Q5热格子Boltzmann模型,在非平衡态外推的边界条件下,首先对不同Eckert数(Ec)和Prandtl数(Pr)时Couette流的温度场进行数值模拟,计算结果与解析解吻合良好,且在Ec变化很大的条件下,计算结果仍与解析解相符,验证了模型的准确性和稳定性.然后对封闭三角空腔内不同Rayleigh数(Ra)下的自然对流流场和温度场进行了数值模拟,结果与文献计算值吻合良好,说明格子Boltzmann方法的TD2Q5热模型可用于高Ra时的空腔热流动模拟
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/47177
Last time updated on 11/04/2021
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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Last time updated on 09/11/2016