Journal•ISSN: 1040-7790
Numerical Heat Transfer Part B-fundamentals
Taylor & Francis
About: Numerical Heat Transfer Part B-fundamentals is an academic journal published by Taylor & Francis. The journal publishes majorly in the area(s): Heat transfer & Discretization. It has an ISSN identifier of 1040-7790. Over the lifetime, 1692 publications have been published receiving 34486 citations. The journal is also known as: Fundamentals.
Topics: Heat transfer, Discretization, Boundary value problem, Thermal conduction, Finite element method
Papers published on a yearly basis
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TL;DR: In this paper, Jive k-e, two-equation models are evaluated for their performance in predicting natural convection, forced convection and mixed convection in rooms, as well as an impinging jet flow.
Abstract: In this article, Jive k-e, two-equation models are studied: the standard k-e model, a low-Reynolds-number k-e model, a two-layer k-e model, a two-scale k-e model, and a renormalization group (RNG) k-e model. They are evaluated for their performance in predicting natural convection, forced convection, and mixed convection in rooms, as well as an impinging jet flow. Corresponding experimental data from the literature are used for validation. It is found that the prediction of the mean velocity is more accurate than that of the turbulent velocity. These models are neither able to predict anisotropic turbulence correctly nor to pick up the secondary recirculation of indoor air flow; otherwise the performance of the standard k-e model is good. The RNG k-e model is slightly better than the standard k-e model and is therefore recommended for simulations of indoor airflow. The performance of the other models is not stable.
686 citations
TL;DR: The finite volume method has been shown to effectively predict radiant exchange in geometrically simple enclosures where the medium is gray, absorbing, emitting, and scattering as mentioned in this paper, and it has been used to predict radiant heat transfer on the same mesh employed to solve the equations of fluid motion.
Abstract: The finite-volume method has been shown to effectively predict radiant exchange in geometrically simple enclosures where the medium is gray, absorbing, emitting, and scattering. Cartesian and circular cylindrical meshes have always been used. The present article shows that the method applies equally well to geometrically complex enclosures where nonorthogonal, boundary-fitted meshes are used. This development permits radiant heat transfer to be computed on the same mesh employed to solve the equations of fluid motion.
594 citations
TL;DR: In this paper, a linearization of the discretized source term is proposed to deal efficiently with a wide range of latent heat evolution mechanisms (i.e., liquid fraction temperature relationships).
Abstract: After a brief review of current source-based methods for modeling solidification phase change systems, a new source-based method for the treatment of latent heat evolution is presented. The essential feature of the proposed method is linearization of the discretized source term. This results in a robust and accurate computational method that can deal efficiently with a wide range of latent heat evolution mechanisms (i.e., liquid fraction temperature relationships). The proposed method is illustrated on application to a test problem in which various liquid fraction temperature relationships are employed.
527 citations
TL;DR: A cell-centered equal-order formulation for multidimensional incompressible flows that is applied to benchmark problems using a variety of quadrilateral/hexahedral, triangular/tetrahedral, and hybrid meshes, and is shown to perform satisfactorily.
Abstract: This article presents a finite-volume scheme for multidimensional incompressible flows. Unstructured, solution-adaptive meshes composed of arbitrary convex palyhedra are used. A cell-centered equal-order formulation is developed. Gradients required for the evaluation of diffusion fluxes and for second-order-accurate convective operators are found by linear reconstruction. An additive-correction multigrid scheme is used to solve the resulting discrete equations. Pressure and velocity are stored at cell centers; momentum interpolation is used to prevent pressure checkerboarding. The SIMPLE algorithm is used for pressure-velocity coupling. Schemes for hanging-node and conformed adaption are implemented. The scheme is applied to benchmark problems using a variety of quadrilateral/hexahedral, triangular/tetrahedral, and hybrid meshes, and is shown to perform satisfactorily.
472 citations
TL;DR: In this article, the authors develop a rapid implicit solution technique for the enthalpy formulation of conduction controlled phase change problems, which is based on three existing implicit enthpy schemes.
Abstract: This paper develops a rapid implicit solution technique for the enthalpy formulation of conduction controlled phase change problems. Initially, three existing implicit enthalpy schemes are introduc...
337 citations