Structural optimization of labyrinth-channel emitters based on hydraulic and anti-clogging performances |
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Authors: | Jun Zhang Wanhua Zhao Yiping Tang Bingheng Lu |
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Institution: | (1) State Key Laboratory for Manufacturing System Engineering, Xi’an Jiaotong University, Xi’an, People’s Republic of China;(2) Institute of Advanced Manufacturing Technology, School of Mechanical Engineering, Xi’an Jiaotong University, No. 28 Xianning West Road, 710049 Xi’an, People’s Republic of China |
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Abstract: | To balance the hydraulic and anti-clogging performances for labyrinth-channel emitters, a multi-objective optimization was
performed to improve the structure of trapezoidal labyrinth channels. Two variables, pressure loss coefficient (PLC) and passage
rate of particles (PRP), were proposed to evaluate the hydraulic and anti-clogging performances, respectively. The Pareto
fronts of PLC and PRP were calculated using the elitist non-dominated sorting genetic algorithm version II (NSGA-II). The
results show that the optimal fronts are obtained through 100 generations evolution. The associated key parameters D/W and H/D are constant, while S/H and α are different for each front. In addition, the approach to obtain a trade-off solution from these fronts was developed by
arranging different weights for the two variables. This approach is very suitable for structural optimization of labyrinth
channels with the same shape but different dimensions. |
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Keywords: | |
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