Direct Simulation Scheme Derived from the Boltzmann Equation.VIII.Velocity Correlation Relevant to Boundary Conditions
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概要
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Molecular boundary conditions has a crucial effect on the correlation ofvelocity between two molecules. First, the effect is analysed by using a stochasticmodel for molecular reflection at tbe wall ; the model is a combination of specularand diffuse reflection. As the percentage ;. of diffuse reflection increases, thecorrelation coefficient p drastically decreases; it is at most of order (;.N) ', Nbeing the number of simulated molecules. Next, the effect is examined by analys-tug the data from actual simulation calculations. The behavior of the data isconsistent with the magnitude of p determined by using the reflection model. Ifp is less than about 3 '7;, the simulation data for any boundary conditions areessentially the exact solutions of the Boltzmann equation.
- 1982-06-15
著者
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Nanbu Kenichi
Institute Of Fluid Science Tohoku University
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Nanbu Kenichi
Institute For Fluid Science Tohoku University
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