유동 방향 변화에 따른 잠수함 주위의유동 특성과 유체동역학적 계수의 변화
The Variation of Flow Field and Hydrodynamic Coefficients of Submarine by Changes of Angle of Attack and Yaw Angle
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Abstract
The three-dimensional RANS equations were applied to analyze the flow field of a submarine. To validate the code, the DARPA SUBOFF bare hull and an ellipsoid at angles of attack of 10° and 30° were simulated and good agreement with experiments was obtained. After the code validation, the flows over the full configuration of DARPA SUBOFF model having a fairwater and four stern appendages were simulated at four angles of attack0°, 10°, 20°, 30° and three yaw angles10°, 20°, 30°. Specifically, the pressure contours and streamlines of fairwater and stern appendage were compared as the angle of attack and yaw angle changed. The variations of hydrodynamic forces were also calculated.
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