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Modification of equation of motion of fluid-conveying pipe for laminar and turbulent flow profiles

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成果类型:
期刊论文
作者:
Guo, C. Q.*;Zhang, C. H.;Paidoussis, M. P.
通讯作者:
Guo, C. Q.
作者机构:
[Guo, C. Q.; Zhang, C. H.] Tsinghua Univ, Dept Hydraul Engn, Beijing 100084, Peoples R China.
[Guo, C. Q.] Univ S China, Sch Math & Phys, Hengyang 421001, Hunan, Peoples R China.
[Paidoussis, M. P.] McGill Univ, Dept Mech Engn, Montreal, PQ H3A 2K6, Canada.
通讯机构:
[Guo, C. Q.] T
Tsinghua Univ, Dept Hydraul Engn, Beijing 100084, Peoples R China.
语种:
英文
关键词:
Critical flow velocity;Equation of motion;Fluid-conveying pipe;Laminar flow;Turbulent flow
期刊:
Journal of Fluids and Structures
ISSN:
0889-9746
年:
2010
卷:
26
期:
5
页码:
793-803
机构署名:
本校为其他机构
院系归属:
数理学院
摘要:
Considering the non-uniformity of the flow velocity distribution in fluid-conveying pipes caused by the viscosity of real fluids, the centrifugal force term in the equation of motion of the pipe is modified for laminar and turbulent flow profiles. The flow-profile-modification factors are found to be 1.333, 1.015-1.040 and 1.035-1.055 for laminar flow in circular pipes, turbulent flow in smooth-wall circular pipes and turbulent flow in rough-wall circular pipes, respectively. The critical flow velocities for divergence in the above-mentioned th...

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