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10-04-2020 | Research Paper | Issue 2/2020

Acta Mechanica Sinica 2/2020

Fluid–structure interaction in Z-shaped pipe with different supports

Journal:
Acta Mechanica Sinica > Issue 2/2020
Authors:
Q. Guo, J. X. Zhou, X. L. Guan

Abstract

Fluid–structure interaction (FSI) has a strong relation with layout of fluid delivery system. FSI is liable to cause local damage. Thus, FSI analysis is necessary in many cases, especially for flexible pipe systems. FSI modeling consists of eight governing equations and then completely solved via the finite volume method (FVM). Friction, Poisson and joint couplings were discussed in detail to reveal the influence of a Z-shaped pipe with different supports and elbows on FSI. After the feasibility of solving FSI by FVM was verified, the different effects of free, fixed and elastic supports on FSI in the commonly used and simplified Z-shaped pipe were further analyzed. Results indicated that different support stiffness lead to various FSI responses. If coupling occurs at the elbow and less support is considered, then the pipe has a relatively large amplitude and complex pressure fluctuation.

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