流体在弯管内壁面压强分布研究  

Study on the pressure of fluid on the surface in elbow pipes

作　　者：张浩[1,2] 鹿晓阳[3] 张建 王建 王炜亮[6] 

机构地区：[1]山东建筑大学可再生能源建筑利用技术省部共建教育部重点实验室,山东济南250101 [2]山东建筑大学山东省建筑节能技术重点实验室,山东济南250101 [3]山东建筑大学力学研究所,山东济南250101 [4]济南名都置业有限公司,山东济南250013 [5]中国建筑技术集团有限公司,北京100013 [6]山东师范大学人口资源与环境学院,山东济南250014

出　　处：《山东建筑大学学报》2012年第2期172-175,共4页Journal of Shandong Jianzhu University

基　　金：教育部科学技术研究重点项目(211096);山东省自然科学基金项目(ZR2010AM016);国家水体污染控制与治理科技重大专项(2009ZX07210-007-05)

摘　　要：弯管是石油、化工、航海、航空和核工业管道网络中的重要构件,对弯管内流体压强分布规律的研究是弯管生产使用质量安全保证的前提和基础。本文基于量纲分析方法,通过压强分布预测模拟,数值研究了多个无量纲参数对弯管内流体压强分布特点的影响和定量分布规律。结果表明:弯管无量纲压强随弯径比在凸边递减、凹边递增,两者之差递减并趋于恒定值;无量纲压强与β角基本成反余弦关系变化。Elbow pipes are critical components of piping system in petroleum industry, chemical indus- try, navigation industry, aviation industry and nucleus industry. The study on the distribution of di- mensionless pressure of fluid on the surface of the elbow pipes is the premise of quality safety in pro- ducing elbow. This paper is based on the dimensional analysis methods. The qualitative conclusions for the 90~ elbow pipe are obtained. By means of prediction of the pressure distribution, the effect of a number of dimensionless parameters such as the non-dimensional curvature, Reynolds number, di- mensionless axial angle ct, and annular angle fl on the spatial distribution of pressure inside the elbow is analyzed and discussed in detail by numerical method. The results show that the dimensionless pressure decreases on the convex side and increases on the concave side with the bending diameter ra- tio and that the dimensionless pressure basically has inverse cosine relationship with ft.

关 键 词：弯管内压强分布 无量纲方法 定性分析方法 数值研究 

分 类 号：O351.2[理学—流体力学]