Indexed by:
期刊论文
First Author:
Zhang M.
Correspondence Author:
Zhang, M.; School of Energy and Power Engineering, Dalian University of Technology, No. 2, Linggong Road, Liaoning, Dalian 116024, China; email: zmdlut@qq.com
Co-author:
Wang X.-F.,Xu S.-L.,Yin S.
Date of Publication:
2012-01-01
Journal:
International Journal of Rotating Machinery
Included Journals:
EI、Scopus
Document Type:
J
Volume:
2012
ISSN No.:
1023621X
Abstract:
Helical groove seal is designed in reactor coolant pump to control the leakage along the front surface of the impeller face due to its higher resistance than the circumferentially grooved seal. The flow and the friction factors in helical groove seals are predicted by employing a commercial CFD code, FLUENT. The friction factors of the helical groove seals with helix angles varying from 20 deg to 50 deg, at a range of rotational speed and axial Reynolds number, were, respectively, calculated. For the helically grooved stator with the helix angle greater than 20 deg, the leakage shows an upward trend with the helix angle. The circumferentially grooved stator has a lower resistance to leakage than the 20 deg and 30 deg stators. It can be predicated that, for a bigger helix angle, the friction factor increases slightly with an increase in high axial Reynolds number, which arises from the high-pressure operation condition, and the friction factor is generally sensitive to changes in the helix angle in this operation condition. The study lays the theoretical foundation for liquid seal design of reactor coolant pump and future experimental study to account for the high-pressure condition affecting the leakage characteristic. ? 2012 Meng Zhang et al.
Translation or Not:
no
