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이봉희(Bonghee Lee),전보현(Bohyeon Jeon),강상모(Sangmo Kang) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
Research about butterfly valve's flow characteristics had been achieved about pressure loss factor of valve, cavitation, torque characteristics, flux control characteristics and valve performance etc. mainly. LNG must equip durability with enough intensity having intention because transport and stored in ultra low temperature state of - 162℃. Specially, when work migration, efficiency of valve and highly stability are required. But, an experiment is impossible effectively to problem of huge expense to embody a engineering experiment about cryogenic fluid flow. Therefore, achieved CFD analysis that allow to Reynolds averaged Navier- Stokes equation. It used commercial code CFX11.0 to achieve study hydromechanics about triple eccentric butterfly valve's flow characteristic and other physical design argument. At first, produced flow coefficient by CFD that apply water by working fluid. Because comparing it with typical value, verified validity. And that achieve analysis for cryogenic. state. Eddy flow and pressure change that develop to valve disk rear of various turbulence model in this study applied predictable k-w SST(Shear-Stress Transport) model comparatively