江苏大学学报（自然科学版）2011，Vol.32Issue(5)：528-532,5.DOI:10.3969/j.issn.1671-7775.2011.05.007
离心泵叶轮内盐析晶体颗粒分布特性试验
Distribution feature experiment of salt-out crystal particles in a centrifugal pump impeller
摘要
Abstract
Particle image velocimetry was adopted to measure and analyze the salt-out crystal particle size distribution in a centrifugal pump impeller at different operating conditions. Experimental results show that almost all particles at the inlet are small and distributed evenly at intermediate axial cross-section of impeller. The particle number density is different at different axial direction with the characteristics of small density at axial cross-section near front cover and large density near rear cover. There are some large crystal particles along radial direction, which are mainly located near the pressure side with even distribution at the outlet. When the experiment flow rate is increased from 0. SQ to 1. 2Q, the aggregation tendency of large particles to the pressure side becomes obvious with larger average particle size gradient. The particle number density becomes larger and number of large-size particles is increased significantly with the raise of solid volume fraction from 0. 75 C to 1. 25 C. When solution temperature grows from 35 ℃ to 39 ℃ , both the particle size and number density decrease obviously due to solubility increasing at high temperature.关键词
离心泵叶轮/液固两相流/盐析晶体颗粒/粒径分布/粒子图像测速仪Key words
centrifugal pump impeller/ solid-liquid two-phase flow/ salt-out crystal particle/ particle size distribution/ particle image velocimetry分类
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杨敏官,吴承福,高波,康灿,冯浪..离心泵叶轮内盐析晶体颗粒分布特性试验[J].江苏大学学报（自然科学版）,2011,32(5):528-532,5.基金项目
国家自然科学基金资助项目(50476068) （50476068）
江苏大学高级专业人才科研启动基金资助项目(10JDG032) （10JDG032）
