基于FLUENT的文丘里管稳流性能数值模拟

doi:10.16182/j.issn1004731x.joss.17-0247

系统仿真学报 ›› 2019, Vol. 31 ›› Issue (7): 1460-1468.doi: 10.16182/j.issn1004731x.joss.17-0247

• • 上一篇

基于FLUENT的文丘里管稳流性能数值模拟

刘馥瑜, 胡效东^*, 梁之西, 柳庆磊

山东科技大学机械电子工程学院,山东青岛 266590

收稿日期:2017-05-23 修回日期:2017-07-18 发布日期:2019-12-12
作者简介:刘馥瑜(1991-),男,山东临沂,硕士,研究方向为多相流水力机械; 胡效东(通讯作者1971-),男,山东菏泽,博士,副教授,研究方向为化工设备先进设计方法。
基金资助:
山东省自然科学基金(ZR2014EEM018)

Numerical Simulation of Steady Flow Performance of Venturi Tube Based on FLUENT

Liu Fuyu, Hu Xiaodong^*, Liang Zhixi, Liu Qinglei

College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266590, China

Received:2017-05-23 Revised:2017-07-18 Published:2019-12-12

摘要/Abstract

摘要： 采用可实现k-ε湍流模型和Zwart空化模型对某种文丘里管规定工况下的空化流动进行了数值模拟,得到流量变化曲线,有效预测空化区域。选取管路喉部管径d分别为3 mm、5 mm、7 mm、9 mm;选取喉部到入口之间距离L为60 mm、40 mm、20 mm。得出结论：水力空化现象是文丘里管稳流作用的主因;喉部管径影响空化稳流性能,d为9 mm时流量增幅最大为0.13m³·h^-1,d为3mm时流量增幅最小为0.02 m³·h^-1;喉部与入口的距离主要影响水力空化的初生,L为20 mm空化初生入口压力最小为10.77 MPa,L为60 mm,空化初生入口压力最大为10.98 MPa。

关键词: 文丘里管, 稳流, 喉部, 空化

Abstract: The cavitation flow performances of a given Venturi tube were studied to get the steady flow curve and predict the cavitation region based on the realizable k-ε turbulence model and Zwart (Zwart-Gerber-Belamri) cavitation model under the designed conditions with FLUENT software. The throat diameters D of the Venturi tube were chosen as 3mm, 5mm, 7mm and 9mm respectively; and the distances L between the throat and the entrance were 60mm,40mm and 20mm respectively. It can be concluded that: (1) The phenomenon of hydraulic cavitation is the main reason for the steady flow of Venturi tubes; (2) Throat diameter affects the steady flow performance of cavitation. When D is 9mm, the maximum increase of flow rate is 0.13 m³·h^-1; and when D is 3mm, the minimum increase of flow rate is 0.02 m³·h^-1; (3) The distance between the throat and the entrance mainly affects the inception of hydraulic cavitation. When L equals 20mm, the minimum initial entrance pressure of cavitation is 10.77 MPa; and when L equals 60mm, the maximum initial entrance pressure of cavitation is 10.98 MPa.

Key words: Venturi tube, steady flow, throat, cavitation

中图分类号:

TP391.9

刘馥瑜, 胡效东, 梁之西, 柳庆磊. 基于FLUENT的文丘里管稳流性能数值模拟[J]. 系统仿真学报, 2019, 31(7): 1460-1468.

Liu Fuyu, Hu Xiaodong, Liang Zhixi, Liu Qinglei. Numerical Simulation of Steady Flow Performance of Venturi Tube Based on FLUENT[J]. Journal of System Simulation, 2019, 31(7): 1460-1468.

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基于FLUENT的文丘里管稳流性能数值模拟

Numerical Simulation of Steady Flow Performance of Venturi Tube Based on FLUENT

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