Numerical Analysis of Unsteady Cavitating Flow around Balancing Drum of Multistage Pump

0459136 - ÚT 2017 RIV KP eng J - Journal Article
Sedlář, M. - Krátký, T. - Zima, Patrik
Numerical Analysis of Unsteady Cavitating Flow around Balancing Drum of Multistage Pump.
International Journal of Fluid Machinery and Systems. Roč. 9, č. 2 (2016), s. 119-128. ISSN 1882-9554.
[Asian International Conference on Fluid Machinery /13./ (AICFM. Tokyo, 07.09.2015-10.09.2015]
R&D Projects: GA ČR GA13-23550S
Institutional support: RVO:61388998
Keywords : cavitation erosion * numerical simulation * multistage pump
Subject RIV: BK - Fluid Dynamics
https://www.jstage.jst.go.jp/article/ijfms/9/2/9_119/_article

This work presents the numerical investigation of an unsteady cavitating flow around a balancing drum of a multistage pump. The main attention is focused on the cavitation phenomena, which occur in the rear part of the drum clearance, cause the erosion of the drum material and influence the pressure losses and the flow rate through the clearance. The one-way coupling of the URANS equations and the full Rayleigh-Plesset equation is employed to analyse the flow field as well as the dynamics of cavitating bubbles. The numerical simulations show that the erosion processes are highly influenced by shaft vibrations, namely by periodic deformations of the annular clearance in time. The calculated results are verified by erosion tests on a real pump.
Permanent Link: http://hdl.handle.net/11104/0260014