Numerical Analyses of Static Characteristics of Liquid Annular Seals Based on 2D LBM-LES Model
Numerical Analyses of Static Characteristics of Liquid Annular Seals Based on 2D LBM-LES Model
复制标题
基于二维LBM-LES模型的液体环形密封静态特性数值分析
DOI:
10.1155/2021/6631557
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发表时间:
2021-03
影响因子:
1.6
通讯作者:
Guoyou Chen
中科院分区:
文献类型:
--
作者:
Zhenjie Zhang;Lulul Zhai;Jia Guo;Zuchao Zhu;Guoyou Chen
Static characteristics and leakage flow rates of liquid annular seals have great influences on the hydraulic efficiency of turbomachinery. In this paper, a two-dimensional (2D) mathematical model for predicting the leakage flow rates and static characteristics of liquid seal is established, based on the lattice Boltzmann method (LBM) combined with the D2G9 velocity model for incompressible fluid and large eddy simulation (LES) turbulence model, in which the transformation equation of reference pressure is developed with the Bernoulli equation. Moreover, the proposed model is validated by comparing with the experimental results, calculation results based on the finite volume method (FVM), and the results based on the empirical method of three seals under different operating conditions. The comparisons show that the maximum deviation in leakage prediction of the calculating model based on 2D LBM is 4%, and this calculating model will effectively improve the leakage prediction accuracy of the seals compared with the FVM and theoretical method.
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影响因子:
2.9
作者:
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通讯作者:
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影响因子:
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DOI:
10.1115/fedsm2013-16338
发表时间:
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期刊:
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影响因子:
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