多孔管孔出流速度和流量影响因素数值仿真及试验

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英文篇名：Numerical Simulation and Experimental on the Influencing Factors of Orifice Exit Velocity and Flow Rate in Porous Pipe 作者：钱卫忠 ; 张志刚 ; 袁舟龙 ; 谷家扬 ; 魏世松 英文作者：QIAN Weizhong;ZHANG Zhigang;YUAN Zhoulong;GU Jiayang;WEI Shisong;Eighth Military Representative Office in Shanghai;Zhoushan Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd.;Jiangsu University of Science and Technology,Marine Equipment and Technology Institute;Jiangsu University of Science and Technology,College of Ship and Ocean Engineering; 关键词：多孔管 ; 孔出流速 ; 孔出流量 ; 数值模拟 ; 模型试验 英文关键词：perforated pipe;;holes out of the flow velocity;;holes out of the traffic;;numerical simulation;;model test 中文刊名：船舶工程 英文刊名：Ship Engineering 机构：驻上海地区第八军事代表室;国网浙江省电力有限公司舟山供电公司;江苏科技大学海洋装备研究院;江苏科技大学船舶与海洋工程学院; 出版日期：2019-11-05 19:01 出版单位：船舶工程 年：2019 期：09 基金：国家重点研发计划资助项目（2018YFC0310400）;; 国家自然科学基金资助项目（51779109）;; 江苏省自然科学基金资助项目（BK20171306） 语种：中文; 页：150-158 页数：9 CN：31-1281/U ISSN：1000-6982 分类号：TV13

摘要

采用控制变量法进行工况设计,对多孔管进行数值模拟和试验对比,分别研究多孔管管径、管长、孔径、孔间距和水压5个变量对多孔管孔出流速度和流量的影响。使用ANSYS软件中的Design Modeler模块进行几何建模,采用ICEM中的O-Block技术进行流体计算域网格划分,利用Fluent软件进行求解。研究发现:多孔管管径和管长增加均会使孔出流速和出流量减小,管长增加会影响孔出流沿程的均匀性;孔径增大会使孔出流速明显减小,且影响孔出流沿程的均匀性,出流量受孔径的影响比较复杂,在孔径不超过2.5mm时,可认为出流量与孔径的平方成正比;孔间距增大对孔出流速和沿程均匀分布基本无影响,与出流量成正比。将数值模拟结果与试验结果相对比,发现试验数据反映的多孔管出流量与管径、管长、孔径和孔间距的关系与数值模拟结果基本吻合,而试验中管的出流量普遍比数值模拟结果小。
        In this paper, through the control variable method for the working condition design, numerical simulation and experimental comparison of porous pipe, respectively, the influence of five variables of porous pipe diameter, pipe length, pore diameter, hole spacing and water pressure on the outlet velocity and flow rate of porous pipe was studied. Geometric modeling was carried out by using the Design Modeler module in ANSYS software, the fluid computing domain grid was divided by o-block technology in ICEM, and Fluent software was used for solution. It is found that the increase of the inner diameter and the length of the porous pipe leads to the decrease of the orifice flow rate and the orifice flow rate. The increase of pore diameter significantly reduces the outlet flow rate, and affects the uniform distribution of the outlet flow along the path. The outlet flow rate is more complex under the influence of pore diameter. When the pore diameter is less than 2.5 mm, it can be considered that the outlet flow rate is proportional to the square of pore diameter. The increase of hole spacing has no effect on the flow rate and uniform distribution along the hole, but is directly proportional to the flow rate. Finally, by comparing the numerical simulation results with the test results, it is found that the relationship between the outlet flow rate of the porous pipe reflected by the test data and the inner diameter, length, diameter and spacing of the pipe is basically consistent with the numerical simulation, while the outlet flow rate of the pipe in the test is generally smaller than that of the numerical simulation.

引文

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