Study on Hydromechanics with Critical Instability Flowrate of Two Ends Supported Pipe Conveying Fluid

Ri Dong Bao

doi:10.4028/www.scientific.net/AMM.387.77

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 387Study on Hydromechanics with Critical Instability...

Study on Hydromechanics with Critical Instability Flowrate of Two Ends Supported Pipe Conveying Fluid

Abstract:

The expression of vertical vibration mode-function of fluid conveying pipe supported elastically on two ends was derived from the boundary conditions of similarly supported beam. The dynamic stability of pipe conveying fluid with the same supporting conditions was invesigated and the expression of its critical instability flowrate was obtained. The effects of fluid pressure and axial force of pipe section on critical instability flowrate were calculated and analyzed based on the eigenequation. The numerical results showed that the critical instability flowrate were proportional to axial drawn force, but proportional conversely to fluid pressure and axial pressed force of pipe section. The critical instability flowrate of fluid conveying pipe varied greatly with its supporting conditions. In order to improve its value at engineering application, the axial pressed force of pipe section should be avoided.

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Periodical:

Applied Mechanics and Materials (Volume 387)

Pages:

77-84

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.387.77

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Online since:

August 2013

Authors:

Ri Dong Bao

Keywords:

Criticalin Stability Flowrate, Dynamic Stability, Fluid Conveying Pipe, Fluid Structure Interaction (FSI), Supporting Conditions

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References

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