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A Non-linear Low-Reynolds-Number Heat Transfer Model for Turbulent Separated and Reattaching Flows
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 Title & Authors
A Non-linear Low-Reynolds-Number Heat Transfer Model for Turbulent Separated and Reattaching Flows
Rhee, Gwang-Hoon; Sung, Hyung-Jin;
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 Abstract
A nonlinear low-Reynolds-number heat transfer model is developed to predict turbulent flow and heat transfer in separated and reattaching flows. The model of Park and Sung (1997) is extended to a nonlinear formulation, based on the nonlinear model of Gatski and Speziale (1993). The limiting near-wall behavior is resolved by solving the elliptic relaxation equation. An improved explicit algebraic heat transfer model is proposed, which is achieved by applying a matrix inversion. The scalar heat fluxes are not aligned with the mean temperature gradients in separated and reattaching flows; a full diffusivity tensor model is required. The near-wall asymptotic behavior is incorporated into the function in conjunction with the elliptic relaxation equation. Predictions of the present model are cross-checked with existing measurements and DNS data. The model preformance is shown to be satisfactory.
 Keywords
Nonlinear Low-Reynolds-Number;Heat Transfer Model;Turbulence Model;
 Language
Korean
 Cited by
1.
국소교란에 의한 박리 재부착 유동에서의 난류 열전달 수치해석,리광훈;성형진;

대한기계학회논문집B, 2001. vol.25. 1, pp.87-95 crossref(new window)
2.
국소교란에 의한 난류 경계층 유동의 수치해석,리광훈;성형진;

대한기계학회논문집B, 2001. vol.25. 1, pp.96-107 crossref(new window)
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