Large Eddy Simulation-based Optimization of Organ Nozzle Structural Parameters and Flow Characteristics Analysis
Based on ZGB cavitation model and WALE subgrid model,having large eddy simulation(LES)method adopted to simulate cavitation jet flow field of the organ nozzle was implemented,including basing on the general coincidence between experimental and numerical simulation of the evolution law of cavitation clouds to optimize the organ nozzle's structure parameters.In addition,based on orthogonal experimental design of three factors and four levels,the influence of both cylindrical and diffusion sections on the cavi-tation jet flowfield characteristics was analyzed to show that,the diffusion angle mainly influences cavitation effect,and the cylindrical section's length mainly influence jet effect,and the diffusion section's length has a similar effect on the cavitation jet.Through analysis of range,the optimal structural parameter's combination of the organ nozzle was obtained.Comparing and analyzing the cavitation jet flowfield simulated before and after optimizing structural parameters of the organ nozzle indicates that,the optimized organ nozzle has significantly improved the cavitation jet effect.
organ nozzlelarge eddy simulationorthogonal experimentstructural parameter optimiza-tioncavitation jet
NETL
NSTL
万方数据
