S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Mechanical Aerospace Engineering (기계항공공학부) Others_기계항공공학부
터보펌프 주변 극저온 공동 유동장의 호율적이고 정확한 해석
Efficient and Accurate Computations of Cryogenic Cavitating Flows around Turbopump Inducer
- 김형준; 민대호; 김현지; 김종암
- Issue Date
- 2014 한국전산유체공학회 춘계학술대회, pp. 141-146
- 공학; 극저온 공동현상; 액체로켓 터보펌프 인듀서; 이상유동; 전 마하수유동; Cryogenic cavitation; Liquid rocket turbopump inducer; Two-pahse flow; All-speed flow
- This paper deals with the numerical computations of cryogenic cavitating flows around turbopump inducer in liquid rocket. Recently, accurate and efficient baseline numerical schemes have been developed for the computations of all-speed two-phase flows. The baseline numerical schemes – RoeM and AUSMPW+ schemes for multi-phase flows – are extended for treating general equation of state, and improved preconditioning techniques are developed for more robust and efficient computations in low-speed region. As a validation step for such progress, two-dimensional/axi-symmetric cryogenic cavitating flows around hydrofoil and ogive are computed with different working fluids and cavitation models. Finally, numerical simulations of three-dimensional KARI turbopump inducer are carried out under various flow conditions with water and cryogenic fluids, and the differences in inducer flow physics depending on the working fluids are examined.