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多维熔融物与冷却剂相互作用分析程序COSMETRIC的开发与验证
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作者 郭宇翔 钟明君 +2 位作者 熊进标 张良 刘晓晶 《原子能科学技术》 EI CAS CSCD 北大核心 2018年第7期1300-1307,共8页
基于MCBA-SIMPLE算法开发了自主化的多维熔融物与冷却剂相互作用分析程序COSMETRIC。为验证该程序,针对熔融物与冷却剂相互作用实验KROTOS的典型工况进行了模拟计算。通过与KROTOS37实验结果对比,验证了程序模拟高温熔融物与冷却剂混合... 基于MCBA-SIMPLE算法开发了自主化的多维熔融物与冷却剂相互作用分析程序COSMETRIC。为验证该程序,针对熔融物与冷却剂相互作用实验KROTOS的典型工况进行了模拟计算。通过与KROTOS37实验结果对比,验证了程序模拟高温熔融物与冷却剂混合过程中熔融物液柱碎化、熔融物液滴迁移以及冷却剂蒸发的能力;通过与KROTOS21实验结果对比,验证了程序对蒸汽爆炸压力脉冲峰值及传播速度预测的合理性。在此基础上,对KROTOS21爆炸工况计算的初始空泡份额、熔滴水力学碎化无量纲时间和熔融物碎片初始直径等参数进行了敏感性分析,评估了这些参数对最终压力脉冲的影响。敏感性分析结果发现,较大的初始空泡份额会抑制压力峰值和传播速度;增大熔融物碎片初始直径和水力学碎化无量纲时间,会提升压力波传播速度,降低压力峰值。 展开更多
关键词 熔融物与冷却剂相互作用 COSMETRIC程序 mcba-SIMPLE算法 多相流模拟
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New Modified Controlled Bat Algorithm for Numerical Optimization Problem 被引量:2
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作者 Waqas Haider Bangyal Abdul Hameed +7 位作者 Jamil Ahmad Kashif Nisar Muhammad Reazul Haque Ag.Asri Ag.Ibrahim Joel J.P.C.Rodrigues M.Adil Khan Danda B.Rawat Richard Etengu 《Computers, Materials & Continua》 SCIE EI 2022年第2期2241-2259,共19页
Bat algorithm(BA)is an eminent meta-heuristic algorithm that has been widely used to solve diverse kinds of optimization problems.BA leverages the echolocation feature of bats produced by imitating the bats’searching... Bat algorithm(BA)is an eminent meta-heuristic algorithm that has been widely used to solve diverse kinds of optimization problems.BA leverages the echolocation feature of bats produced by imitating the bats’searching behavior.BA faces premature convergence due to its local search capability.Instead of using the standard uniform walk,the Torus walk is viewed as a promising alternative to improve the local search capability.In this work,we proposed an improved variation of BA by applying torus walk to improve diversity and convergence.The proposed.Modern Computerized Bat Algorithm(MCBA)approach has been examined for fifteen well-known benchmark test problems.The finding of our technique shows promising performance as compared to the standard PSO and standard BA.The proposed MCBA,BPA,Standard PSO,and Standard BA have been examined for well-known benchmark test problems and training of the artificial neural network(ANN).We have performed experiments using eight benchmark datasets applied from the worldwide famous machine-learning(ML)repository of UCI.Simulation results have shown that the training of an ANN with MCBA-NN algorithm tops the list considering exactness,with more superiority compared to the traditional methodologies.The MCBA-NN algorithm may be used effectively for data classification and statistical problems in the future. 展开更多
关键词 Bat algorithm mcba ANN ML Torus walk
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