CAJ | 학술논문

文章采用CFD技术计算了船桨干扰定常空化性能.首先计算了不同空化数下的NACA66(MOD)水翼和DTRC4381螺旋桨的定常空化性能,同时预报了KCS船的伴流场、阻力性能和船体表面压力分布.为了验证计算船后螺旋桨空化流的可行性,文中对KCS船和KP505螺旋桨进行了整体考虑,并计算了不同空化数下的船后螺旋桨的空化覆盖面积.计算表明,文中采用的计算方法合理,计算结果与试验结果吻合.
문장채용CFD기술계산료선장간우정상공화성능.수선계산료불동공화수하적NACA66(MOD)수익화DTRC4381라선장적정상공화성능,동시예보료KCS선적반류장、조력성능화선체표면압력분포.위료험증계산선후라선장공화류적가행성,문중대KCS선화KP505라선장진행료정체고필,병계산료불동공화수하적선후라선장적공화복개면적.계산표명,문중채용적계산방법합리,계산결과여시험결과문합.
Steady interaction of cavitating turbulent flow between ship hull and propeller was described based on Computational Fluid Dynamics techniques (CFD).A NACA66 (MOD) airfoil section and DTRC4381 propeller with different cavitation number were chosen as a numerical model to predict steady cavitation.KCS ship was conducted to calculate the wake field,resistance and surface pressure coefficient.As an attempt in investigating the feasibility of computing cavitating turbulent flow around the rotating propeller behind the ship hull,KCS ship and KP505 propeller were selected to study the cavitating interaction between ship and propeller as references to the consideration cavitation when computing the ship hull and propeller as a whole.The cavatation coverage areas with changing the cavitation number were predicted.The results show that the hydrodynamic performance prediction method is successful and reasonable and the computational results agree well with the existing experimental data.