Effects of Geometric Parameters on Dynamic Stability of the Annular Flow-shell System
Wen-Bo Ning, Yun Xu, Ying-Hua Liao, Zhi-Rong Li
Available Online December 2016.
- https://doi.org/10.2991/mme-16.2017.47How to use a DOI?
- Cylindrical shell, Stability, Annular flow, Gap ratio.
- 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.
- 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 SP - 344 EP - 350 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 -