|제목(국문)||원관내 난류의 저항감소현상에 대한 수치해석|
|제목(영문)||Numerical analysis of drag reduction of turbulent flow in a pipe|
김광용 (K.Y.Kim ,인하대학교 공과대학 ) ▷공저자 네트워크 보기
최형진 (H.J.Choi ,인하대학교 공과대학 ) ▷공저자네트워크등록하기
|초록||A modified low-Re k-& model is used for the calculation of drag-reducing turbulent flow by polymer injection in a pipe. With the viscoelastic model, molecular viscosity in the definition of turbulent viscosity is related to elongational viscosity of the solution to account for the effects of drag reduction, Finite volume method is used for the discretization, and power-law scheme is used as a numerical scheme. Computed dimensionless velocity profiles are in good agreements with the experimental data in case of low drag reductions. However, in case of high drag reductions, they deviate largely from the measurements in the central zone of the flowfield.
|keyword||Drag reduction(저항감소), Low-Re k-εmodel(저레이놀즈수 k-ε모델), Finite volume method(유한체적법), Pipe flow(원관유동), Elongational viscosity (신장점성계수)|