微灌压力调节器调压特性流固耦合数值计算及分析

李连忠 1; 牛文全 1; 2; 魏正英 3; 谢巧丽 1; 周兴 3

doi:10.7652/xjtuxb201305024

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微灌压力调节器调压特性流固耦合数值计算及分析

更新时间：2025-07-09

- 微灌压力调节器调压特性流固耦合数值计算及分析
- Numerical Simulation on Regulating Characteristics of Pressure Regulator in Micro-Irrigation System by Fluid-Structure Interaction Method
- 西安交通大学学报 2013年47卷第5期页码：131-136
- 作者机构：
  
  西北农林科技大学水利与建筑工程学院, 712100, 陕西杨凌
- 作者简介：
- 基金信息：
  
  : 2012-08-28。作者简介: 李连忠(1986—),男,硕士生;牛文全(通信作者),男,副教授。基金项目: 国家高技术研究发展计划资助项目(2011AA100507);高等学校学科创新引智计划资助项目(B12007)
- DOI：10.7652/xjtuxb201305024
  中图分类号： S275.6;TV131.2
- 网络首发：2013-05-10，
  
  纸质出版：2013
- 稿件说明：
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李连忠 1, 牛文全 1, 2, 等. 微灌压力调节器调压特性流固耦合数值计算及分析[J]. 西安交通大学学报, 2013,47(5):131-136.

Numerical Simulation on Regulating Characteristics of Pressure Regulator in Micro-Irrigation System by Fluid-Structure Interaction Method[J]. 2013, 47(5): 131-136.
李连忠 1, 牛文全 1, 2, 等. 微灌压力调节器调压特性流固耦合数值计算及分析[J]. 西安交通大学学报, 2013,47(5):131-136. DOI： 10.7652/xjtuxb201305024.

Numerical Simulation on Regulating Characteristics of Pressure Regulator in Micro-Irrigation System by Fluid-Structure Interaction Method[J]. 2013, 47(5): 131-136. DOI： 10.7652/xjtuxb201305024.

摘要

针对微灌压力调节器在调压过程中内部压力、速度分布及调节组件运动状况等特性难以用传统方法分析的问题

采用流固耦合方法进行了数值计算。通过对比数值计算与实验结果发现

进出口压力的最小相对误差为0.98%

最大相对误差为14.28%

流量的相对误差为6.19%

从而验证了流固耦合方法的可行性。在此基础上

对压力调节器内部压力、速度分布以及调节组件的轴向位移趋势等特性进行了分析

结果表明:稳定工作状态下压力损失主要发生在调节组件与进口花篮堵头之间

压力损失占进口压力的28.13%～34.17%

该值随着进口压力的增加而增大; 进口压力达到一定值后

调节组件的轴向位移随进口压力的增加而增大

最后稳定在13 mm～13.8 mm之间并呈波动性变化。所得结果可为微灌压力调节器设计提供参考。

Abstract

It is difficult to analyze the characteristics of pressure regulator in micro-irrigation systems during regulating

such as the distributions of internal pressure and velocity

and the movement features of the regulating components

by the traditional methods. Numerical simulations for these processes are conducted following fluid structure interaction consideration. A comparison between the simulated and experimental results of pressure and flow rate indicates that the minimum relative error for pressure gets to 0.98% and the maximum to 14.28%; the relative error for flow rate to 6.19%. The distributions of velocity and pressure in pressure regulator

and the axial displacement of regulating component are computationally analyzed. It is found that the pressure loss occurred mainly between the regulating part and the block cap for steady working state. The ratio of pressure loss to the inlet pressure is ranged from 28.13% to 34.17% and increases with the inlet pressure. When the inlet pressure reaches a certain value

the axial displacement of the regulating part increases with the inlet pressure and finally stabilizes and varies undulatingly within 13 to 13.8 mm.

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references

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