CAJ | 학술논문

为快速准确预报实船阻力及流场信息，对基于模型尺度数值计算外推方法、虚拟流体粘度方法、实尺度计算方法的阻力及流场计算结果进行了比较和分析。在傅汝德数0.15~0.41内，3种方法与船模试验值外推预报的实船阻力差分别在7%、4.5%、3.5%以内，其中虚拟流体粘度方法和实尺度计算方法均考虑了粗糙度的影响。在波形与伴流场的比较中，虚拟流体粘度方法与实尺度计算方法预报结果基本一致。虚拟流体粘度的方法能够较好预报实船的阻力和流场，且计算量最小，具有较强的工程应用价值。
위쾌속준학예보실선조력급류장신식，대기우모형척도수치계산외추방법、허의류체점도방법、실척도계산방법적조력급류장계산결과진행료비교화분석。재부여덕수0.15~0.41내，3충방법여선모시험치외추예보적실선조력차분별재7%、4.5%、3.5%이내，기중허의류체점도방법화실척도계산방법균고필료조조도적영향。재파형여반류장적비교중，허의류체점도방법여실척도계산방법예보결과기본일치。허의류체점도적방법능구교호예보실선적조력화류장，차계산량최소，구유교강적공정응용개치。
This paper uses the extrapolation method based on the model-scale numerical calculation,virtual fluid viscosity method and full-scale calculation method to predict and analyze the resistance and flow field of a ship in full-scale. With the Froude number within the range of 0.15 ~ 0.41,the difference between the resistance predic-tions based on the three methods and the full-scale data extrapolated from the model-scale measurements is less than 7%,4.5%,3.5%,respectively. In addition,the virtual fluid viscosity calculation and full-scale calculation had in-cluded the effects of roughness. The virtual fluid viscosity method and full-scale calculation method gave consistent predictions of the free surface evaluation and wake field. The virtual fluid viscosity method can predict full-scale re-sistance and the flow field well with the least computation time,and as a result is useful for engineering.