상세 보기
타원혼합모형에 의한 폴리머 항력감소 난류유동의 예측
Prediction of Polymer Drag-Reduction Turbulent Flow due to Elliptic Blending Model
- 신종근;
- 박명호
초록
An improved k-e-v2 model for Newtonian fluids has been extended to predict polymer-induced drag reduction FENE-P fluids. The conformation tensor equation which is related to the polymer stress is adopted from the model form of Resende et al., and the models of redistribution and dissipation rate terms for the scalar v2 transport equation are considered by the elliptic blending equation. Also, the new model terms for viscoelastic stress work in the turbulent kinetic energy equation and the scalar v2 transport equation are introduced to consider the polymer additives effect. The prediction results are directly compared to the DNS data to assess the performance of the present model predictions.
키워드
Turbulence model(난류모형); Drag reduction(항력감소); Polymer additives(폴리머 첨가제); FENE-P model(FENE-P 모형); Viscoelastic fluid(점탄성 유체); Conformation tensor(구조텐서); Weissenberg number(와이센버그 수)
- 제목
- 타원혼합모형에 의한 폴리머 항력감소 난류유동의 예측
- 제목 (타언어)
- Prediction of Polymer Drag-Reduction Turbulent Flow due to Elliptic Blending Model
- 저자
- 신종근; 박명호
- 발행일
- 2013-10
- 유형
- Y
- 저널명
- 한국기계기술학회지
- 권
- 15
- 호
- 5
- 페이지
- 653 ~ 660