Side Entry Using Multi-Island Genetic Algorithm / Study on Optimization of Outlet Shape
Abstract
Physical model tests or numerical simulations are generally used to study the hydraulic characteristics of the set shape of hydraulic structures, and then studies are carried out to adjust the shape according to unfavorable hydraulic indicators until a satisfactory better shape is obtained. This is the traditional practice. Lateral inlet under two-way flow / Optimization of outlet shape can be regarded as a multi-objective optimization problem. In this paper, the weighted head loss coefficient is set as the objective function, and the non-uniform coefficient of flow velocity in the orifice cross-section and the non-uniform coefficient of flow volume between orifices are taken as the constraint conditions. The multi-objective optimization is converted into single-objective optimization, and the multi-island genetic algorithm is used to optimize the outlet shape of / to obtain the optimal shape. In addition, the application of parametric modeling method and response surface model based on CFD accelerates the speed of modeling and numerical simulation and improves the optimization efficiency. Taking the outlet of / of a lower reservoir as an example, compared with the original body, the recommended body type obtained according to the method in this paper has the following characteristics: the total head loss coefficient of / outflow is reduced by 3.35%, the flow velocity nonuniformity coefficient is reduced by 14.50%, and the flow nonuniformity coefficient of / inflow is less than "20% 。 This research method provides a convenient way to optimize the shape of hydraulic structures.
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Lu Youmei, Pan Jiazheng . Pumped Storage Power Station [M ］. Beijing: Water Conservancy and Electric Power Press, 1992.
Sun Shuangke, Liu Haitao, Li Zhenzhong, et al. . Side Inlet of Pumped Storage Power Station / Study on Velocity Distribution of Trash Gate Section at Outlet [J ］. Journal of Water Conservancy. 2007，38（11）：1329-1355 .
Zhang Junjun, Mao Xinwei, Mao Genhai, et al. . Hydraulic Test and Shape Optimization of Side Short Inlet and Outlet [J ］. Journal of Hydraulic Power Generation, 2006，25（2）：38-41.
Zhang Conglian, Zhu Honghua, Zhong Weiqiang, et al. . Hydraulic Experimental Study on Inlet and Outlet of Pumped Storage Power Station [J ］. Journal of Hydroelectric Power Generation, 2005，24（2）：60-63 .
Gao Xueping, Ye Fei, Song Huifang, . Side Entry / 3D Numerical Simulation of Water Flow Movement at Outlet [J ］. Journal of Tianjin University, 2006，39（5）： 518-522.
Gao Xueping, Li Yuedong, Tian Tian, et al. . Side Inlet of Pumped Storage Power Station / Outlet Flow Distribution Research [J ］. Journal of Hydroelectric Power Generation, 2016，35（6）：87-94 .
Zhang Landing . Study on the Diversion Characteristics of Inlet and Outlet of Upper and Lower Reservoirs of Xiangshuijian Pumped Storage Power Station [J ］. Progress in Water Conservancy and Hydropower Science and Technology, "2010，30（6）: 48-52 .
Cai Fulin, Hu Ming, Zhang Zhiming, et al. . Study on Two-way Flow Side Inlet and Outlet Diverter Pier [J ］. Journal of Hehai University (Natural Science Edition), 2000 28（2）：74-77 .
Yang Xiaoting, Zhang Qiang, Deng Chaohui . Model Test of Inlet and Outlet of Water Extraction and Energy Storage Power Station [J ］. Wuhan University (Engineering Edition), 2007，40（1）：66-68 .
Sha Haifei, Zhou Hui, Huang Dongjun . Side Inlet of Pumped Storage Power Station / Numerical Simulation of Outlet [J ］. Journal of Hydroelectric Power Generation, 2009，28（1）： 84-88.
Chen Nanxiang, Li Yuepeng, Xu Chenguang . Optimal Allocation of Water Resources Based on Multi-objective Genetic Algorithm [J ］. Journal of Water Conservancy, 2006，37（3）： 308-313.
GAO Ting，WANG Yaxing，PANG Yongjie，et al . Hull shape optimization for autonomous underwater vehicles using CFD ［J］. Engineering Applications of Computational Fluid Mechanics，2016，10（1）：601-609 .
Bin Sun, Lu Hongxing, Song Chenguang, et al. Multi-objective hydraulic optimization of wing-shaped buildings based on Hicks-Henne function and MIGA [J]. Journal of Sichuan University (Engineering Science Edition), 2013,45 (4): 13-20.
SERGIO Galvan，CARLOS Rubio，PACHECO Jesus，et al . Optimization methodology assessment for the inlet ve⁃locity profile of a hydraulic turbine draft tube：part II—performance evaluation of draft tube mode Global Optimization，2013，55（4）：729-749 .J］. Journal of
Zhang Le, Zhou Zhou, Xu Xiaoping. Design and optimization of conformal asymmetric S-bend inlet for flying wing UAV [J]. journal of aerospace power, 2016, 31 11）：2682-2690 .
Ma Tielin, Ma Dongli, Zhang Shuo . Application of Parametric Modeling of Analytical Model in Multidisciplinary Optimization Design of Aircraft [J ］. Journal of Aeronautics, 2008，29（6）：1576-1580 .
Ni Jimin, Liu Yue, Shi Xiuyong, et al. Optimal Design Method of Turbocharger Turbine Blade Based on Doe Analysis [J]. Journal of Agricultural Machinery, 2016,47（7）：361-367 .
JOURDAN Adrian，FRANCO Jonathan . Optimal Latin hypercube designs for the Kullback-Leibler criterion［J］.
Asta-advances in Statistical Analysis，2010，94（4）：341-351 .
Wang Yiping, Wang Tao, Li Shuai . Optimization of Automobile Aerodynamic Drag Reduction Based on Free Deformation Technology [J ］. Journal of Mechanical Engineering, 2017，53（9）： 35-143.
ZHOU Liang，HAGHIGHAT Fariborz . Optimization of ventilation system design and operation in office environ⁃ ment， Part I：Methodology［J］. Building and Environment，2009，44（4）：651-656 .
CHEN Hong，RYOZO Ooka，SHINSUKE Kato . Study on optimum design method for pleasant outdoor thermal en⁃ vironment u sing genetic algorithms and coupled simulation of convection，radiation and conduction［J］. Building and Environment，2008，43（1）：18-31 .
WANG Kuowei，CHANG Lichiu，CHANG Fijohn . Multi-tier interactive genetic algorithms for the optimization of long-term re servoir operation［J］. Advances in Water Resources，2011，34（10）：1343-1351 .
KHALESI Nasrin，REZAEI Nazanin，HAGHIFAM Mahmoud-Reza . DG allocation with application of dynamic programming for loss r eduction and reliability improvemen［t J］. International Journal of Electrical Power and Ener⁃ gy Systems，2011，33（2）：288-295 .
Zhao Dejian, Wang Yankui, Zhou Ping, et al. . Optimization of Two-Dimensional Airfoil Suction Drag Reduction Based on Multi-Island Genetic Algorithm [J ］. Journal of Beijing University of Aeronautics and Astronautics 2015，45（5）：941-946 .
Xin Xiang, Zhu Ao Xin . Study on fitness function of genetic algorithm [J ］. systems engineering and electronics, 1998（11）： 58-62.
DL/T 5208-2005 Design Guidelines for Pumped Storage Power Stations [S]. Beijing: China Electric Power Press, 2005.
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