西华大学学报（自然科学版）2017，Vol.36Issue(5)：17-21,5.DOI:10.3969/j.issn.1673-159X.2017.05.003
喉部面积对切线泵性能的影响
Effect of the Throat Areaon Tangent Pump Performance
杨军虎 1王弼 2张学光 1蔺尚杰1
作者信息
- 1. 兰州理工大学能源与动力工程学院,甘肃 兰州 730050
- 2. 甘肃省流体机械及系统重点实验室,甘肃 兰州 730050
- 折叠
摘要
Abstract
In order to find out the influence of throat area on the performance of tangent pump, CFD technology is used to five dif-ferent throat diameter of tangent pump inside a three-dimensional unsteady flow numerical simulation to calculate the area of the throat different tangent flow pump in different operating conditions head and efficiency, to map out the flow head and efficiency curves for dif-ferent speeds and finally flow conditions at the throat of comparative analysis of the causes flow cutoff value and flow coefficient. The study found that when a tangent pump throat diameter changes from 0. 7Dd to 1. 3Dd in its pump, head design conditions remain un-changed, and its scope become significantly larger;efficiency first increases with increasing flow rate and then decrease in the efficien-cy of the cut-off point near the maximum;lift cut-off point after the appearance of the head due to a sharp decline in the throat ve-locity is greater than the peripheral speed of the impeller diameter, and the sharp decrease in the peripheral speed of the impeller diam-eter, this results in a sharp decline in the head;tangent pump through a throat diameter of 0. 85Dd,Dd,and 1. 15Dd,flow coefficient becomes near the optimum efficiency and the flow coefficient of tangent pump should be appropriate in the 0. 75-0. 8.关键词
切线泵/喉部直径/数值模拟/截止点/流量系数Key words
tangent pump/throat diameter/numerical simulation/cutoff point/flow coefficient分类
机械制造引用本文复制引用
杨军虎,王弼,张学光,蔺尚杰..喉部面积对切线泵性能的影响[J].西华大学学报（自然科学版）,2017,36(5):17-21,5.
