双层垂直轴水轮机性能计算的当量密实度法

发布时间：2018-02-16 21:37

本文关键词： 潮流能当量密实度法垂直轴水轮机流管模型 CFD 水动力性能双层垂直轴水轮机　出处：《哈尔滨工程大学学报》2017年08期 　论文类型：期刊论文

【摘要】：为解决流管模型在双层垂直轴水轮机性能计算中的数值发散问题,提出了一种流管模型的修正方法——当量密实度法。当量密实度法将双层垂直轴叶轮的计算与单层垂直轴叶轮的计算进行类比,将双层叶轮变换成为单层叶轮,减少了流管模型的计算盘面数,从而避免了数值发散问题。先利用某型单层垂直轴水轮机的实验数据和CFD(computational fluid dynamics)计算数据,对流管模型数值程序的有效性进行了验证,同时分析了流管模型在计算双层叶轮性能中存在的困难。给出了当量密实度法的理论,并利用CFD计算结果对新方法的数值程序进行了验证,对结果进行了分析。分析结果表明,当量密实度法的计算结果与CFD计算结果基本吻合,当量密实度法可以应用于双层垂直轴水轮机的性能估算。
[Abstract]:In order to solve the problem of numerical divergence of flow tube model in the performance calculation of double-layer vertical shaft turbine, In this paper, a modified method of flow tube model, equivalent compactness method, is proposed. The method of equivalent compactness compares the calculation of double-layer vertical axial impeller with that of single-layer vertical axial impeller, and transforms double-layer impeller into single-layer impeller. The numerical divergence problem is avoided by reducing the number of the calculated surface of the flow tube model. First, the validity of the numerical program of the convection tube model is verified by using the experimental data of a single-layer vertical axis turbine and the CFD(computational fluid dynamic data. At the same time, the difficulties of the flow tube model in calculating the performance of double-layer impeller are analyzed. The theory of equivalent compactness method is given, and the numerical program of the new method is verified by CFD calculation results. The results are analyzed. The equivalent compactness method can be used to estimate the performance of double-layer vertical shaft turbine.
【作者单位】：哈尔滨工程大学船舶工程学院;
【基金】：国家自然科学基金项目(11572094) 黑龙江省自然科学基金项目(E2016021) 哈尔滨市科技创新人才专项资金项目(2015RQQXJ014) 海洋工程国家重点实验室(上海交通大学)开放课题项目(1606)
【分类号】：TK730.2

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