Multi-objective optimization of fire monitor nozzle based on RBF model
SHI Zhefu1, XUE Lin2, LI Hong1, XIANG Qingjiang1
1.National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.Shanghai Fire Research Institute of MPS, Shanghai 200438, China
Abstract:In order to improve the range of fire monitor, multi-objective optimization is carried out based on PSKDY40 fire monitor. First, the throat diameter, length and the contraction angle of nozzle are selected as design variables. The lowest turbulent kinetic energy and the highest average velocity at the outlet are taken as objectives. Then, combined with optimal Latin hypercube designs and numerical simulations, a RBF model is established. Finally, multi-objective optimization of the water channel in a fire monitor nozzle is performed with NSGA-II algorithm, and the Pareto optimal solution sets are obtained. It is shown that the RBF model is with high fitting accuracy can significantly improve the optimization efficiency for fire monitor nozzles. Moreover, the throat diameter exhibits the highest influence on fire monitor nozzle performance in the three variables. The optimized results suggest that the two objectives are better than those of the original model.
施哲夫, 薛林, 李红, 向清江. 基于RBF模型的消防水炮炮头多目标优化[J]. 排灌机械工程学报, 2016, 34(7): 626-631.
SHI Zhefu, XUE Lin, LI Hong, XIANG Qingjiang. Multi-objective optimization of fire monitor nozzle based on RBF model. Journal of Drainage and Irrigation Machinery Engin, 2016, 34(7): 626-631.
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