利用水力模型软件Info Works ICM建立广州市FY路2D排水模型,分析评估现状管道水力运行状况,找出内涝的原因,制定有针对性的解决方案,并利用水力模型对设计方案进行校核,保证方案的合理性和可行性。现通过实例介绍2D排水模型在城市排水...利用水力模型软件Info Works ICM建立广州市FY路2D排水模型,分析评估现状管道水力运行状况,找出内涝的原因,制定有针对性的解决方案,并利用水力模型对设计方案进行校核,保证方案的合理性和可行性。现通过实例介绍2D排水模型在城市排水工程中的应用方法和具体流程,可为其他地区模型应用提供参考。展开更多
Mankind holds creation as a special human property contributing knowledge and culture.Both design and research belong to creative activities.While research focuses on new findings following the rule of truth,design pa...Mankind holds creation as a special human property contributing knowledge and culture.Both design and research belong to creative activities.While research focuses on new findings following the rule of truth,design pays more attention to new designed works following the rule of beauty.Three philosophical principles for design are suggested as ABC principles:A.Design approaches beauty;B.Design balances science and art;C.Design concerns culture.Three types of design are practically discussed,including 2D art or symbol design,3D engineering or product design,and nD program or form design.展开更多
To increase the robustness of the optimization solutions of the mixed-flow pump,the impeller was firstly indirectly parameterized based on the 2D blade design theory.Secondly,the robustness of the optimization solutio...To increase the robustness of the optimization solutions of the mixed-flow pump,the impeller was firstly indirectly parameterized based on the 2D blade design theory.Secondly,the robustness of the optimization solution was mathematically defined,and then calculated by Monte Carlo sampling method.Thirdly,the optimization on the mixed-flow pump′s impeller was decomposed into the optimal and robust sub-optimization problems,to maximize the pump head and efficiency and minimize the fluctuation degree of them under varying working conditions at the same time.Fourthly,using response surface model,a surrogate model was established between the optimization objectives and control variables of the shape of the impeller.Finally,based on a multi-objective genetic optimization algorithm,a two-loop iterative optimization process was designed to find the optimal solution with good robustness.Comparing the original and optimized pump,it is found that the internal flow field of the optimized pump has been improved under various operating conditions,the hydraulic performance has been improved consequently,and the range of high efficient zone has also been widened.Besides,with the changing of working conditions,the change trend of the hydraulic performance of the optimized pump becomes gentler,the flow field distribution is more uniform,and the influence degree of the varia-tion of working conditions decreases,and the operating stability of the pump is improved.It is concluded that the robust optimization method proposed in this paper is a reasonable way to optimize the mixed-flow pump,and provides references for optimization problems of other fluid machinery.展开更多
文摘利用水力模型软件Info Works ICM建立广州市FY路2D排水模型,分析评估现状管道水力运行状况,找出内涝的原因,制定有针对性的解决方案,并利用水力模型对设计方案进行校核,保证方案的合理性和可行性。现通过实例介绍2D排水模型在城市排水工程中的应用方法和具体流程,可为其他地区模型应用提供参考。
文摘Mankind holds creation as a special human property contributing knowledge and culture.Both design and research belong to creative activities.While research focuses on new findings following the rule of truth,design pays more attention to new designed works following the rule of beauty.Three philosophical principles for design are suggested as ABC principles:A.Design approaches beauty;B.Design balances science and art;C.Design concerns culture.Three types of design are practically discussed,including 2D art or symbol design,3D engineering or product design,and nD program or form design.
基金National Natural Science Foundation of China(51609107)Open Subject of Provincial and Ministerial Discipline Platform of Xihua University(szjj2018-123)。
文摘To increase the robustness of the optimization solutions of the mixed-flow pump,the impeller was firstly indirectly parameterized based on the 2D blade design theory.Secondly,the robustness of the optimization solution was mathematically defined,and then calculated by Monte Carlo sampling method.Thirdly,the optimization on the mixed-flow pump′s impeller was decomposed into the optimal and robust sub-optimization problems,to maximize the pump head and efficiency and minimize the fluctuation degree of them under varying working conditions at the same time.Fourthly,using response surface model,a surrogate model was established between the optimization objectives and control variables of the shape of the impeller.Finally,based on a multi-objective genetic optimization algorithm,a two-loop iterative optimization process was designed to find the optimal solution with good robustness.Comparing the original and optimized pump,it is found that the internal flow field of the optimized pump has been improved under various operating conditions,the hydraulic performance has been improved consequently,and the range of high efficient zone has also been widened.Besides,with the changing of working conditions,the change trend of the hydraulic performance of the optimized pump becomes gentler,the flow field distribution is more uniform,and the influence degree of the varia-tion of working conditions decreases,and the operating stability of the pump is improved.It is concluded that the robust optimization method proposed in this paper is a reasonable way to optimize the mixed-flow pump,and provides references for optimization problems of other fluid machinery.
