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湍流场协同模型构建及减阻应用

Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2017-06-15

Journal: 热科学与技术

Included Journals: CSCD

Volume: 16

Issue: 3

Page Number: 253-258

ISSN: 1671-8097

Key Words: 湍流;场协同;减阻优化;Favre平均

Abstract: 在稳态、无体积力流动场协同模型的基础上,将场协同原理与湍流流动有效结合,引入Favre平均和RANS,根据Navier-Stokes方程建立了不可压湍流场协同模型.基于最小机械能耗散原理,在约束条件下推导使黏性耗散函数满足极小值的数值解,将不可压缩湍流模型与流动减阻相关联,构建了湍流场协同减阻模型.以后台阶流动验证模型的有效性,结果显示:改变结构后,黏性耗散值从0.633 0 W减小到0.245 0 W,优化了61.3%.

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