On Diffusion Velocity and the Mass Conservation Equation for Components

Liu Da-you; Wu Bang-xian

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Liu Da-you, Wu Bang-xian. On Diffusion Velocity and the Mass Conservation Equation for Components[J]. Applied Mathematics and Mechanics, 1991, 12(11): 1007-1013.

Citation:

Liu Da-you, Wu Bang-xian. On Diffusion Velocity and the Mass Conservation Equation for Components[J]. Applied Mathematics and Mechanics, 1991, 12(11): 1007-1013.

Citation:

Liu Da-you, Wu Bang-xian. On Diffusion Velocity and the Mass Conservation Equation for Components[J]. Applied Mathematics and Mechanics, 1991, 12(11): 1007-1013.

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On Diffusion Velocity and the Mass Conservation Equation for Components

Liu Da-you^1,2,
Wu Bang-xian^1,3

1.
Multiphase Reaction Laboratory, Academia Sinica;
2.
Institute of Mechanics, Academia Sinica, Beijing;
3.
Institute of Engineering Thermophysics, Academia Sinica, Beijing

Received Date: 1990-07-20
Publish Date: 1991-11-15

Abstract

Abstract

The mass migration velocity(absolute velocitv) of component i in a multicomponent flow is equal to the convection velocity (frame velocity) plus the diffusion velocity (relative velocity). The diffusion velocity as well as the corresponding diffusion coefficient depends on how the convection velocity is adopted.
- molecular diffusion,
- turbulent diffusion,
- diffusion and convection,
- diffusion equation

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References(4)

References

[1]	查普曼、考林,《非均匀气体的数学理论》,科学出版社,北京(1985).
[2]	刘大有,论气体混合物和两相流中的压强和热流,力学学报,18(6) (1986).
[3]	Eckert, E.R.G.and Gross, J.F,Heat and Mass Transfer, McGraw-Hill Book Co,New York (1963).
[4]	欣茨,《湍流》(上册),科学出版社,北京(1987).