基于VOF的量水槽流场数值模拟  

Numerical Simulation of Flow Field in Flow-measuring Flume Based on VOF Method

作　　者：郝晶晶[1] 马孝义[1] 王波雷[1] 张建兴[1] 

机构地区：[1]西北农林科技大学旱区农业水土工程教育部重点实验室,陕西杨凌712100

出　　处：《灌溉排水学报》2008年第2期26-29,共4页Journal of Irrigation and Drainage

基　　金：国家自然科学基金项目(50479052);国家科技支撑计划(2006BAD11B04);西北农林科技大学青年学术骨干计划资助课题

摘　　要：利用Fluent软件,采用VOF方法与标准k-ε紊流模型相耦合,对U型渠道平底抛物线形无喉段量水槽的流场进行三维数值模拟。通过建立不同渠槽模型,分析不同流量工况下沿程水面线及速度场分布,将数值模拟结果与实测结果、公式计算结果进行对比,结果表明,模拟值与实测值、公式计算值吻合较好。并应用该数值模拟方法对量水槽的流量公式进行了检验,为提高其测流精度提供一定的参考依据,为该量水槽结构设计与优化提供了新的思路。By coupling VOF method and standard k-ε turbulence model, the three-dimensional flow field in a parabolic thin-plate weir for U-shaped channel flow measurement was simulated. The water-surface line and velocity distribution were obtained under different discharge conditions in different weirs. Comparing the results of simulation, experiment and formula calculation, the research showed that, they were similar to each other. And it has done the discussion to the flow formulas application, this can provide the reference to improve the estimation precision of weirs, and provide a new way for structure design and parameter optimization of flow-measuring flume.

关 键 词：U形渠道 抛物线形量水槽 数值模拟 k-ε 紊流模型 VOF方法 

分 类 号：S277[农业科学—农业水土工程]