Cavitation in semi-open centrifugal impellers for a miniature pump;

Two semi-open centrifugal impellers were prepared with diameters of 36 mm and the same blade section profile.

The 2-phase 3-D turbulent flow of the pulp fiber suspension was simulated in the hydraulic channel composed of suction chamber,front board,semi-open impeller and volute casing for the first time.

Thw flow field in a centrifugal compressor with unshrouded impeller and vane diffuser is numerically investigated using a three-dimensional Navier-Strokes code and applying the central discretization scheme, Yang&Shih k-ε turbulence model and explicit four-order Runge-Kutta method in this paper.

The time marching method was used to solve the control equations, and a computational analysis of the flow field in a centrifugal compressor with unshrouded impeller and vaned diffuser was presented.

This paper presented the flow field analysis in centrifugal impellers compressing perfectand real gas respectively.

This study shows that penalty finite element method can predict the complex flowfield in centrifugal impellers with enough accuracy for engineering application and can greatlvrsbuce the computatioal work of finite element method.

The objective of this paper is to calculate the invisible, subsonic, compressible and steady flow in a centrifugal impeller by using the finite element method and offer some references for the research of this subject.