원문정보
Evaluation and improvement of turbulence model for prediction of turbulent magnetohydrodynamic flows
초록
영어
The characteristics of the turbulent MHD channel flows are analysed within the elliptic blending k - model. The evaluation of additional terms representing the MDH interactions in the transport equation for the turbulent kinetic energy and dissipation rate is carried out firstly. And then, the improvement of model coefficients for the additional terms is achieved. Regardless of the magnetic field orientation, perpendicular and parrel to the main flow, the model coefficients for the additional terms are not changed to maintain the generality of the present model. The prediction results are directly compared to the DNS data to assess the performance of the present model.
목차
1. 서론
2. 이론적 배경
2.1 운동량방정식
2.2 난류 MHD 유동에 대한 k - 모형
2.3 기존 k - 모형의 평가와 개선 내용
2.4 타원혼합 방정식에 의한 수정모형
3. 결과 및 고찰
4. 결론
References