LAI Tianwei, YANG Shanju, ZHANG Xingqun, et al. Computational fluid dynamic analysis on flow and cavitation characteristics of R134a in centrifugal pump with straight blades[J]. CIESC Journal, 2014, (z2): 45-51.
LAI Tianwei, YANG Shanju, ZHANG Xingqun, et al. Computational fluid dynamic analysis on flow and cavitation characteristics of R134a in centrifugal pump with straight blades[J]. CIESC Journal, 2014, (z2): 45-51.DOI: 10.3969/j.issn.0438-1157.2014.z2.007.
The performance of refrigerant circulation centrifugal liquid pump is of great importance for the stability and reliability of free cooling system. Emergence of cavitation is crucial for the liquid pump
especially for that works near liquid saturation. In this paper
flow and cavitation characteristics in centrifugal liquid pump with straight blades are analyzed numerically with computational fluid dynamic (CFD) tools CFX based on Rayleigh-Plesset cavitation model
and the effect of rotational speed on the flow field distribution and cavitation is evaluated. Numerical results indicate that cavitation appears firstly in the upstream region around leading edge of blade with rotational speed
and that the adherent cavitation area enlarges near the suction surface of blade with the increase of rotational speed. Meanwhile
flow streamline turbulence is prominent and the secondary flow is obvious in the pump with straight blade.