http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
RANS법을 이용한 DARPA Suboff 잠수함의 저항 및 자항 해석
변창용(C.Y. Byeon),김제인(J.I. Kim),박일룡(I.R. Park),설한신(H.S. Seol) 한국전산유체공학회 2018 한국전산유체공학회지 Vol.23 No.3
This paper shows numerical results of the resistance performance of the DARPA Suboff submarine model and the open water performance of the E1619 propeller obtained by using Reynolds averaged Navier-Stokes method. A grid dependency study was carried out for the both simulations with varying turbulence models: Realizable k-ε model, SST k-ω model and Reynolds Stress model. Resistances of the submarine model and the propeller characteristics of the E1619 as well as their local flows were compared with available experimental data. The present numerical results from Reynolds stress model on fine grids of y+ 1 were well matched with those of model test and other numerical study. The wake velocities behind the submarine and the propeller were compared with LDV measurement data showing good agreement. Finally, self-propulsion of the DARPA Suboff submarine equipped with the E1619 was simulated. The analysed several self-propulsion factors were compared with other numerical results.
SUBOFF 잠수함 모델의 캐비테이션터널 조건 저항 및 자항 수치해석 연구
박일룡(I.R. Park),김제인(J.I. Kim),서성부(S.B. Suh),설한신(H.S. Seol) 한국전산유체공학회 2019 한국전산유체공학회지 Vol.24 No.3
In this paper, numerical investigation of the resistance and self-propulsion of the SUBOFF submarine model in the KRISO large cavitation tunnel was carried out by using the Reynolds averaged Navier-Stokes method and Reynolds stress model for turbulence closure. This study followed the sensitivity analysis of grid and turbulence models done by Byeon et al.[11] which was for the numerical estimation of the resistance of the SUBOFF model in DTRC towing tank. In the numerical results, the resistances and the nominal wake field were validated by the experimental data of the cavitation tunnel. After blockage corrections, the computed resistances showed a good accordance with those of the DTRC towing tank test free from blockage effects. Self-propulsion simulations for wetted and cavitating flow conditions were performed on the basis of thrust identity approach and resulted in a good agreement with the measured self-propulsion data and cavitation observations for the propeller.