레이놀즈응력 수송방정식 모형에 의한 폴리머 항력감소 난류 채널유동의 예측

신종근; 변선준

논문 상세보기

레이놀즈응력 수송방정식 모형에 의한 폴리머 항력감소 난류 채널유동의 예측 KCI 등재

Prediction of Polymer Drag-Reduction Turbulent Channel Flow with a Reynolds Stress Transport Equation Model

신종근, 변선준

언어KOR
URLhttps://db.koreascholar.com/Article/Detail/364133

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한국기계기술학회지 (Journal of the Korean Society of Mechanical Technology)

제20권 제5호 (2018.10)
pp.549-555

한국기계기술학회 (Korean Society of Mechanical Technology)

초록

An elliptic blending Reynolds stress transport equation 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 Reynolds stress transport equation are considered by the elliptic blending equation. Also, the new model terms for viscoelastic turbulent transport and viscoelastic dissipation in the Reynolds stress 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

Reynolds stress transport equation model 레이놀즈응력 수송방정식 모형 Drag reduction 항력감소 Poly- mer additives 폴리머 첨가제 FENE-P Model FENE-P 모형 Viscoelastic fluid 점탄성 유체 Conform- ation tensor 구조텐서 Weissenberg Number 와이센버그 수

ABSTRACT
1. 서론
2. 지배방정식 및 모형화 과정
3. 결과 및 고찰
4. 결론
References

저자

신종근(Donghae-si Business Incubation Center) | J. K. Shin Corresponding Author
변선준(Nuclear Fuel Safety Research Division, Korea Atomic Energy Research Institute) | S. J. Byun

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