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首页> 外文期刊>International Journal of Heat and Mass Transfer >Law of the wall for two-phase turbulent boundary layers
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Law of the wall for two-phase turbulent boundary layers

机译：两相湍流边界层的壁定律

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摘要

A two-phase logarithmic law of the wall for isothermal bubbly turbulent boundary layer is developed. Total boundary layer liquid turbulent stress is estimated by the sum of bubble induced local stress and shear induced stress. Boussinesq turbulent viscosity approximation is assumed to be valid for both stress components. A proportionality coefficient was introduced to account for inherently non-linear interaction between shear and buhble induced turbulence fields. The two-phase wall law was implemented in CFX4.2 computational fluid dynamics program. A better agreement with experimental data was achieved when the new wall law was employed rather than conventional single-phase law.
机译：建立了等温气泡状湍流边界层的两相对数律。总的边界层液体湍流应力是由气泡引起的局部应力和剪切引起的应力之和估算的。假定Boussinesq湍流粘度近似值对两个应力分量均有效。引入比例系数以解决剪切和泡沫引起的湍流场之间固有的非线性相互作用。在CFX4.2计算流体动力学程序中实现了两相壁定律。当采用新的壁法则而不是常规的单相法则时，与实验数据更好地吻合。

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