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- 저자 : 유성수(Sungsu Yoo) (검색결과 1 건)
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분지관 내부 이동 물체 주위 비뉴턴 맥동류에 대한 CFD 기초해석
황도연(Doyeon Hwang),한병윤(Byungyun Han),유성수(Sungsu Yoo),이명수(Myungsu Lee),박형구(Hyung-Koo Park) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
The objective of this study is to get simulation data about pulsatile flow around an interior solid body, which moves inside a bifurcated tube. All the processes were based on CFD method, with a commercial FVM code, SC/Tetra ver. 6.0 for solving, and with CATIA R16 for generating geometries. The bifurcated tube models were drawn with the bifurcated angle of 45 degrees, considering Murray's law about the diameter ratio. With respect to the motion of the object, the effects of flow on the drag were considered. For the pulsating flow condition, the velocity wave profile was given as the inlet boundary condition. To validate all the result, the simulation was compared with the existing data of the other papers first for the pulsatile flow condition and the inside drag calculation. Overall flow field of both data were similar, but there was some difference at a zero velocity. Therefore the next simulation was continued with the sine wave profiles where there is no negative flow, and then the data was compared with one of the pulmonary artery velocity where there is negative flow. The final process was to calculate flow variables such as the wall shear stress (WSS) and to compute the drag of the solid object.
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