Abstract：The size of the existing bidirectional flow channel was so large that it was difficult to produce in current drip irrigation production facility. In order to solve this problem, the structure of flow channel was redesigned by means of changing the placing ways of dividing water and the blocking water objects and reducing the size of structure parameters. To the new flow channel, 16 hydraulic tests were carried out with the orthogonal design method to research the effects of 4 key structure parameters on hydraulic performance. The results obtained from range analysis and variance analysis show that the width of flow path is the most important factor affecting the flow index, and the flow coefficient is seriously influenced by the distance between dividing water object and flow channel boundary. Then two models about flow index and flow coefficient to 4 key structure parameters are established according to the multiple linear regression method. It has been verified that the two models are able to express the relationship between the 4 key structure parameters and the hydrodynamic behaviors. These conclusions can offer guidance for the structural optimization of bidirectional flow channel and making the hydraulic performance of the new channel better.
王新端, 白丹, 郭霖, 何靖. 改进的滴灌双向流道结构参数对水力性能影响[J]. 排灌机械工程学报, 2016, 34(12): 1093-1098.
WANG Xinduan, BAI Dan, GUO Lin, HE Jing. Influence of structural parameters of improved bidirectional flow channel on hydraulic performance in drip irrigation. Journal of Drainage and Irrigation Machinery Engin, 2016, 34(12): 1093-1098.
[1]张俊,赵万华,粟晓玲,等.微灌长流道灌水器结构特征的研究综述[J]. 农业工程学报,2005,21(1):182-185. ZHANG Jun, ZHAO Wanhua, SU Xiaoling, et al. Review of structural characteristics analysis of the long-path emitters for micro-irrigation[J]. Transactions of the CSAE, 2005, 21(1):182-185.(in Chinese)[2]李云开,杨培岭,任树梅. 滴灌灌水器流道设计理论研究若干问题的综述[J]. 农业机械学报,2006,37(2):145-149. LI Yunkai, YANG Peiling, REN Shumei. General review on several fundamental points of design theory about flow path in drip irrigation emitters[J]. Transactions of the CSAM, 2006, 37(2):145-149.(in Chinese)[3]MADRAMOOTOO Chandra A, JANE Morrison. Advances and challenges with micro-irrigation[J]. Irrigation and drainage, 2013, 62(3):255-261.[4]WEI Qingsong, SHI Yusheng, LU Gang, et al. Study of hydraulic performance of the eddy channel for drip emitters[J]. Irrigation and drainage, 2006, 55(1): 61-72.[5]李云开,杨培岭,任树梅,等. 分形流道设计及几何参数对滴头水力性能的影响[J].机械工程学报,2007,47(3):109-114. LI Yunkai, YANG Peiling, REN Shumei, et al. Effects of fractal flow path designing and its parameters on emitter hydraulic performance[J]. Chinese journal of mechanical engineering,2007,43(7):109-114.(in Chinese)[6]魏青松,史玉升,芦刚,等. 内镶式滴灌带绕流流道水力性能研究[J]. 农业工程学报,2006,22(10):83-87. WEI Qingsong, SHI Yusheng, LU Gang, et al. Hydraulic performances of the round-flow channel in an in-line drip-tape[J]. Transactions of the CSAE,2006, 22(10): 83-87.(in Chinese)[7]苑伟静,魏正英,楚华丽,等. 分流式灌水器结构优化设计与试验[J]. 农业工程学报,2014,30(17):117-124. YUAN Weijing, WEI Zhengying, CHU Huali, et al. Optimal design and experiment for divided-flow emitter in drip irrigation[J]. Transactions of the CSAE, 2014,30(17):117-124.(in Chinese)[8]白丹,田济扬,宋立勋. 双向流弧形滴灌带:中国专利,ZL201220007024.6[P]. 2012-09-05.[9]白丹,宋立勋,党志良. 双向流滴灌带:中国专利,ZL201220006857.0[P].2012-09-05.[10]田济扬,白丹,任长江,等. 滴灌双向流道灌水器水力特性分析[J]. 农业工程学报,2013,29(20):89-94. TIAN Jiyang, BAI Dan, REN Changjiang, et al. Analysis on hydraulic performance of bidirectional flow channel of drip irrigation emitter[J]. Transactions of the CSAE, 2013,29(20): 89-94.(in Chinese)[11]田济扬,白丹,于福亮,等. 基于Fluent 软件的滴灌双向流道灌水器水力性能数值模拟[J].农业工程学报,2014,30(20):65-71. TIAN Jiyang, BAI Dan, YU Fuliang, et al. Numerical simulation of hydraulic performance on bidirectional flow channel of drip irrigation emitter using Fluent[J]. Transactions of the CSAE, 2014, 30(20): 65-71.(in Chinese)[12]喻黎明,吴普特,牛文全,等. 迷宫流道转角对灌水器水力性能的影响[J]. 农业机械学报,2009,40(2):63-67. YU Liming, WU Pute, NIU Wenquan, et al. Influence of angle of labyrinth channels on hydraulic performance of emitter[J]. Transactions of the CSAM,2009,40(2):63-67.(in Chinese)[13]魏正英, 唐一平, 赵万华, 等. 滴灌灌水器迷宫流道结构与水力性能试验研究[J]. 农业机械学报, 2005, 36(12): 51-55. WEI Zhengying, TANG Yiping, ZHAO Wanhua, et al. Structure and hydraulic performance experimental research on labyrinth channels of drip irrigation emitters [J]. Transactions of the CSAM, 2005, 36(12): 51-55.(in Chinese)[14]李云开, 杨培岭, 任树梅, 等. 圆柱型灌水器迷宫式流道内部流体流动分析与数值模拟[J]. 水动力学研究与进展(A辑), 2005, 20(6): 736-742. LI Yunkai, YANG Peiling, REN Shumei, et al. Analyzing and modeling flow regime in labyrinth path drip irrigation column emitter with CFD[J]. Journal of hydrodynamics: A, 2005, 20(6): 736-742.(in Chinese)[15]LI Guangyong, WANG Jiandong, MAHBUB Alam, et al. Influence of geometrical parameters of labyrinth flow path of drip emitters on hydraulic and anti-clogging performance [J]. American society of agriculture and biological engineers, 2006, 49(3):637-643.[16]ZHANG Jun, ZHAO Wanhua, TANG Yiping. Structural optimization of labyrinth-channel emitters based on hydraulic and anti-clogging performances[J]. Irrigation science, 2011, 29(5):351-357.[17]WEI Qingsong, SHI Yusheng, DONG Wenchu, et al. Study on hydraulic performance of drip emitters by computational fluid dynamics[J].Agricultural water ma-nagement,2006,84(1/2):130-136.[18]郭霖,白丹,程鹏,等. 滴灌灌水器三角形迷宫流道优化设计[J]. 排灌机械工程学报,2015,33(7):634-639. GUO Lin, BAI Dan, CHENG Peng, et al. Optimization design of triangular labyrinth channel in drip irrigation emitter[J]. Journal of drainage and irrigation machinery engineering,2015,33(7):634-639.(in Chinese)
