Proceedings of the 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016)

Effects of Geometric Parameters on Dynamic Stability of the Annular Flow-shell System

Authors
Wen-Bo Ning, Yun Xu, Ying-Hua Liao, Zhi-Rong Li
Corresponding Author
Wen-Bo Ning
Available Online December 2016.
DOI
https://doi.org/10.2991/mme-16.2017.47How to use a DOI?
Keywords
Cylindrical shell, Stability, Annular flow, Gap ratio.
Abstract
Considering their particular geometric structures, the stator and rotor cans in canned motor reactor coolant pump are assumed to be elastic coaxial cylindrical shells in this paper. An ideal, incompressible, swirling fluid flows the annulus between the inner shell (can) and the outer shell (can). Thin shell structures such as cans are prone to buckling instabilities under fluid forces. Furthermore, a lot of accidents were caused by losing stability. Dynamic stability analysis of the stator can subjected to helical annular flow is presented by means of Donnell-type shell equations and the potential flow theory. Specially, the effects of the geometrical parameters of the annular flow-shell system are studied. The results show that the critical velocities decrease with the crease of the values of the length-to-radius and radius-to-thickness. Moreover, the effects of annular gaps and boundary conditions on the stability of annular flow-shell system are given.
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This is an open access article distributed under the CC BY-NC license.

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Proceedings
3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016)
Part of series
Advances in Engineering Research
Publication Date
December 2016
ISBN
978-94-6252-303-6
ISSN
2352-5401
DOI
https://doi.org/10.2991/mme-16.2017.47How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Wen-Bo Ning
AU  - Yun Xu
AU  - Ying-Hua Liao
AU  - Zhi-Rong Li
PY  - 2016/12
DA  - 2016/12
TI  - Effects of Geometric Parameters on Dynamic Stability of the Annular Flow-shell System
BT  - 3rd Annual International Conference on Mechanics and Mechanical Engineering (MME 2016)
PB  - Atlantis Press
SN  - 2352-5401
UR  - https://doi.org/10.2991/mme-16.2017.47
DO  - https://doi.org/10.2991/mme-16.2017.47
ID  - Ning2016/12
ER  -