Study on Characteristics of Forward Area of Research Ship under Oblique Navigation State
In order to study the influence of the bubbles sweeping down in the bow flow field of the scientific research ship on the acoustic equipment in the oblique navigation state,based on the computational fluid dynamics method,this paper uses CFD simulation software to solve the incompressible fluid N-S equation and combines the DES method and SST k-ω turbulence model to carry out the numerical study of the flow field around the bow area of the'Sun Yat-sen University'scientific research ship model at 20° oblique navigation.In this study,the accuracy of the numerical method was first verified by comparing the DTMB5512 standard mold test.Then,based on the numerical calculation results of"Sun Yat-sen University"model,the formation reasons and development trends of velocity distribution in the x-axis and y-axis directions were analyzed.Using the results of z-axis speed and pressure field,combined with the streamline distribution,the streamlined sweep of the left and right sides under this navigation states was compared,and the formation of the streamline distribution was analyzed.Through the distribution of vortex structure and vortex field,the development of bow discharge vortex and ruddy vortex and their influence on regional flow field were explored.
research vesseloblique navigationbow flow fieldnumerical simulation
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