传质情况下平板上非线性粘性膨胀流体边界层方程的解析解

IF 0.5 4区 工程技术 Q4 MECHANICS
A. N. Popkov
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引用次数: 0

摘要

本文利用幂律Ostwald-Reiner模型,得到了具有传质情况下非牛顿粘性流体二维边界层方程的解析(精确)解,具体情况为\(n = 2\)(膨胀流体)。值得注意的是,在这种情况下,表观粘度的表达式与由普朗特混合长度模型导出的牛顿流体湍流粘度方程一致。对于所考虑的特殊情况,发现在非牛顿流体的流动和具有湍流黏度的牛顿流体之间有相似之处。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

ANALYTICAL SOLUTION OF BOUNDARY LAYER EQUATIONS FOR A NONLINEARLY VISCOUS DILATANT FLUID ON A FLAT PLATE IN THE CASE WITH MASS TRANSFER

ANALYTICAL SOLUTION OF BOUNDARY LAYER EQUATIONS FOR A NONLINEARLY VISCOUS DILATANT FLUID ON A FLAT PLATE IN THE CASE WITH MASS TRANSFER

An analytical (exact) solution of equations of a two-dimensional boundary layer of a non-Newtonian viscous fluid in the case with mass transfer is obtained with the use of the power-law Ostwald–Reiner model in a particular case with \(n = 2\) (dilatant fluid). It is noted that the apparent viscosity in this case is described by an expression that coincides with the equation for turbulent viscosity of a Newtonian fluid derived by the Prandtl mixing length model. For the particular case under consideration, it is found that there is an analogy between the flows of a non-Newtonian fluid and a Newtonian fluid with turbulent viscosity.

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来源期刊
CiteScore
1.20
自引率
16.70%
发文量
43
审稿时长
4-8 weeks
期刊介绍: Journal of Applied Mechanics and Technical Physics is a journal published in collaboration with the Siberian Branch of the Russian Academy of Sciences. The Journal presents papers on fluid mechanics and applied physics. Each issue contains valuable contributions on hypersonic flows; boundary layer theory; turbulence and hydrodynamic stability; free boundary flows; plasma physics; shock waves; explosives and detonation processes; combustion theory; multiphase flows; heat and mass transfer; composite materials and thermal properties of new materials, plasticity, creep, and failure.
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