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微灌双向流压力调节器水力性能研究
发表时间：2015-05-15 浏览量：1728 下载量：498
| 全部作者： | 郭霖，白丹 |
| 作者单位： | 西安理工大学水利水电学院 |
| 摘 要： | 微灌双向流压力调节器是一种新型调压稳流装置。为研究其水力性能，采用均匀设计方法，选取流道的6个主要结构参数作为因素，安排10个结构参数组合方案，对每个方案采用AutoCAD进行三维结构设计，结合计算流体动力学（computational fluid dynamics，CFD）软件Fluent 6.3计算不同压力对应的流量值。应用回归分析建立压力与流量之间的量化关系，计算其流态指数在0.395～0.497之间，表明这一压力调节器水力性能优良。按显著性水平α=0.01检验，6个结构参数对该类压力调节器水力性能均有显著影响。t检验结果显示，过水孔径对其影响最大，边壁距离影响最小。对双向流压力调节器水力性能的研究为其在工程中的研发及应用提供了理论依据。 |
| 关 键 词： | 农业工程；微灌；双向流；压力调节器；水力性能；数值模拟 |
| Title： | Research on hydraulic performance of pressure regulator for two-ways flow in micro-irrigation |
| Author： | GUO Lin, BAI Dan |
| Organization： | Institute of Water Resources and Hydro-electric Engineering, Xi’an University of Technology |
| Abstract： | Micro-irrigation two-ways flow pressure regulator is a new kind of device for steady flow and pressure regulating. In order to study the hydraulic performance of the pressure regulator, choosing 6 key factors from the structural parameters and arranging 10 structural parameters schemes to study flow index and flow coefficient with uniform design method. Computational fluid dynamics (CFD) software Fluent 6.3 is adopted to simulate the flow rate value for different pressures, the 3D models are built by AutoCAD technology. Based on the flux of pressure regulator under different pressures, flow index and flow coefficient can be obtained by using multivariable linear regression method, and then regression equations can be built. The flow index of two-ways flow pressure regulator is in the range from 0.395 to 0.497, whose hydraulic performance is good. The results regressed by multivariable linear regression method about hydraulic performance of pressure regulator to all of the 6 structural parameters have the higher relativity and notability at α=0.01 significance level. According to the t-test analysis, the width of the middle orifice and side wall distance in these parameters is the biggest and least influence factor to the hydraulic performance. Furthermore, the effect of the hydraulic performance on two-ways flow pressure regulator is researched, which provided a theoretical basis for development and application in engineering. |
| Key words： | agricultural engineering; micro-irrigation; two-ways flow; pressure regulator; hydraulic performance; numerical simulation |
| 发表期数： | 2015年5月第9期 |
| 引用格式： | 郭霖，白丹. 微灌双向流压力调节器水力性能研究[J]. 中国科技论文在线精品论文，2015，8（9）：933-939. |
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