SUBOFF 모형 후방 난류항적의 수치 시뮬레이션
Numerical Simulation of Turbulent Wake Behind SUBOFF Model
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초록
This paper covers the numerical studies performed to investigate the characteristics of turbulent wake generated by a submarine, SUBOFF model. A SUBOFF model assumed as an axial-symmetric body was used to generate wake. The numerical simulation was performed by using a commercial S/W, FLUENT, with the same condition as the experiments by Shin et al.(2009). Mainly the cross-sectional distribution of the time-averaged mean wake and turbulent kinetic energy was compared with the experiments. Both results are agreed well with each other in the propeller wake section, but the agreement between both is not so satisfied in the far wake field. It means that more numerous number of grid points and their concentration should be required in that field.
Abstract
This paper covers the numerical studies performed to investigate the characteristics of turbulent wake generated by a submarine, SUBOFF model. A SUBOFF model assumed as an axial-symmetric body was used to generate wake. The numerical simulation was performed by using a commercial S/W, FLUENT, with the same condition as the experiments by Shin et al.(2009). Mainly the cross-sectional distribution of the time-averaged mean wake and turbulent kinetic energy was compared with the experiments. Both results are agreed well with each other in the propeller wake section, but the agreement between both is not so satisfied in the far wake field. It means that more numerous number of grid points and their concentration should be required in that field.
참고문헌 (8)
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- Huang, T.T, "Measurements of Flows over an Axisymmetric Body with Various Appendages (DARPA SUBOFF Experiments)", Proc. of 19th Symp. on Naval Hydrodynamics (1992)
- Diffusion of a Passive Scaler, Quarterly Technical Report, "Ko, D.R.S", TRW Report, ~, pp.No. 18202-6001-120-00. (1972)
- Wake Laboratory Experiment, Quarterly Technical Report No. 1, "Merritt, G.E", Cornell Aeronautical Lab., ~ (1972)
- Reed, A.M, "Hydrodynamics of remotely sensed surface ship wakes", Transactions of SNAME, 99, pp.319~363 (1990)
- Shin, M.-S, "Measurement of Turbulent Wake behind a SUBOFF Model and Derivation of Experimental Equations" (2009), Proc. the Annual Meeting of KAOST
- Song, M, "Numerical and Experimental Investigation on the Interaction of Subsurface Vortical Flows with a Free Surgace", Transactions of the Society of Naval Architects of Korea, 30(2), pp.76~85 (1993)