Instability of Hagen-Poiseuille Flow for Axisymmetric Mode

Wang F. M.; J. T. Stuart(F. R. S.)

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Wang F. M., J. T. Stuart(F. R. S.). Instability of Hagen-Poiseuille Flow for Axisymmetric Mode[J]. Applied Mathematics and Mechanics, 1987, 8(11): 977-984.

Citation:

Wang F. M., J. T. Stuart(F. R. S.). Instability of Hagen-Poiseuille Flow for Axisymmetric Mode[J]. Applied Mathematics and Mechanics, 1987, 8(11): 977-984.

Citation:

Wang F. M., J. T. Stuart(F. R. S.). Instability of Hagen-Poiseuille Flow for Axisymmetric Mode[J]. Applied Mathematics and Mechanics, 1987, 8(11): 977-984.

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Instability of Hagen-Poiseuille Flow for Axisymmetric Mode

Wang F. M.¹,
J. T. Stuart(F. R. S.)²

1.
Institute of Applied Math. Sinica, Beijing;
2.
Imperial College, U. K.

Received Date: 1986-04-10
Publish Date: 1987-11-15

Abstract

Abstract

An investigation is described for instability problem of flow through a pipe of circular cross section.As a disturbance motion,we consider an axisymmetric nonlinear mode.An associated amplitude or modulation equation has been derived for this perturbation.This equation belongs to the diffusion type.The coefficient of it can be negative with Reynolds number increasing,because of the complex interaction between molecular diffusion and convection.The negative diffusion,when it occurs,causes a concentration and focusing of energy within the decaying slug,acting as a role of reversing natural decays.

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References(9)

References

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