Numerical Calculation Method of Submarine Propeller Self-propulsion Based on Multi-domain Stitching Grid Technique
Based on multi-domain mosaic grid technology,a numerical calculation method of propeller self-propulsion was established by using RANS method and sliding mesh technology.Taking the standard SUBOFF full-appendage model and INSEAN E1619 propeller as the research objects,the multi-domain splicing mesh technology was used to generate several sets of calculation mesh for hull resistance and propeller open water performance respectively,and the convergence and effectiveness of the grids were analyzed.Three sets of numerical calculation mesh of propeller self-propulsion are formed by splicing the external mesh of hull resistance calculation with different densities and the ro-tating internal mesh of propeller open water performance calculation,and the mesh convergence analy-sis of numerical calculation of propeller self-propulsion was completed.The self-propelled factors of the propeller model at different speeds were calculated by using the established numerical method,and compared with the results in the literature.The results show that the calculation error of wake frac-tion and relative rotation efficiency is within 4％,and the calculation error of thrust reduction is with-in 8％.This method overcomes the disadvantage of completely remeshing the mesh in the numerical calculation of propeller self-propulsion,ensures the consistency between the numerical calculation of propeller self-propulsion and the numerical calculation mesh of hull resistance and propeller open wa-ter performance,and is helpful to improve the calculation efficiency and accuracy of numerical predic-tion of propeller self-propulsion performance.
万方数据
维普
