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The heat transfer characteristics of thin film flow over a hot sphere resulting from a cold vertical jet of liquid falling onto the surface has been investigated. The underlying physical features have been illustrated by numerical solutions…

流体动力学 · 物理学 2014-03-10 Jian-Jun Shu , Graham Wilks

Rapid processes of heat transfer are not described by the standard heat conduction equation. To take into account a finite velocity of heat transfer, we use the hyperbolic model of heat conduction, which is connected with the relaxation of…

数值分析 · 计算机科学 2010-10-13 Petr N. Vabishchevich

Internally heated convection involves the transfer of heat by fluid motion between a distribution of sources and sinks. Focusing on the balanced case where the total heat added by the sources matches the heat taken away by the sinks, we…

偏微分方程分析 · 数学 2022-12-13 Binglin Song , Giovanni Fantuzzi , Ian Tobasco

Similarity solutions for a one-dimensional mathematical model for thawing in a saturated semi-infinite porous media is considered when change of phase induces a density jump and a convective boundary condition is imposed at the fixed face…

偏微分方程分析 · 数学 2014-05-22 Andrea N. Ceretani , Domingo A. Tarzia

In the above paper the authors treat the boundary layer flow along a stationary, vertical, permeable, flat plate within a vertical free stream. Fluid is sucked or injected through the vertical plate. The fluid species concentration at the…

流体动力学 · 物理学 2014-07-30 Asterios Pantokratoras

This paper investigates shape optimization problems in the context of heat transfer, with a focus on the stability and non-optimality of round domains under Robin boundary conditions. Using the flow approach and Steklov eigenvalue…

偏微分方程分析 · 数学 2025-07-09 Qinfeng Li , Hang Yang

Heat and momentum transfer in wall-bounded turbulent flow, coupled with the effects of wall-roughness, is one of the outstanding questions in turbulence research. In the standard Rayleigh-B\'enard problem for natural thermal convection, it…

流体动力学 · 物理学 2019-07-05 Michael MacDonald , Nicholas Hutchins , Detlef Lohse , Daniel Chung

This paper considers the problem of heat transfer in a composite ceramic material where the structural elements are bonded to the matrix via a thin heat resistant adhesive layer. The layer has the form of a circular ring or close to it.…

材料科学 · 物理学 2016-04-21 Daria Andreeva , Wiktoria Miszuris , Alexander Zagnetko

The convection plays a very important role in heat transfer when MEMS work under air environment. However, traditional measurements of convection heat transfer coefficient require the knowledge of thermal conductivity, which makes…

应用物理 · 物理学 2019-07-26 Xiaoman Wang , Rulei Guo , Qinping Jian , Guilong Peng , Yanan Yue , Nuo Yang

This work proposes an extensive review of laminar and turbulent forced convective heat transfer correlations inside tubes by analyzing both experimental and computational research. Convective heat transfer is influenced by fluid turbulence…

流体动力学 · 物理学 2024-01-09 Gubran A. Q. Abdulrahman , Sultan M. Alharbi

Fluid flow and convective heat transfer in rotor-stator configurations, which are of great importance in different engineering applications, are treated in details in this review. The review focuses on convective heat transfer in…

流体动力学 · 物理学 2013-05-14 Souad Harmand , Julien Pellé , Sébastien Poncet , Igor V. Shevchuk

In Computational Fluid Dynamics (CFD) studies composed of the coupling of different simulations, the uncertainty in one stage may be propagated to the following stage and affect the accuracy of the prediction. In this paper, a framework for…

流体动力学 · 物理学 2019-10-29 F. -J. Granados-Ortiz , J. Ortega-Casanova , C. -H. Lai

This article deals with study of the steady flow and heat transfer characteristics of Sisko fluid over a rotating infinite disk. The flow and heat transfer aspects are thoroughly investigated encompassing highly shear thinning/thickening…

流体动力学 · 物理学 2016-08-26 Asif Munir , Masood Khan

An accurate analysis of the conduction heat transfer in a cryogenic flask is made and some useful formulae are derived. Taking into account the temperature dependence of conductivity and tensile strength of the supporting rods for a helium…

材料科学 · 物理学 2009-02-25 Sever Spanulescu

Space fractional convection diffusion equation describes physical phenomena where particles or energy (or other physical quantities) are transferred inside a physical system due to two processes: convection and superdiffusion. In this…

数值分析 · 数学 2014-05-20 Minghua Chen , Weihua Deng

This paper delves into the Inverse Stefan problem, specifically focusing on determining the time-dependent source coefficient in the parabolic heat equation governing heat transfer in a semi-infinite rod. The problem entails the intricate…

偏微分方程分析 · 数学 2025-01-22 Targyn A. Nauryz , Khumoyun Jabbarkhanov

We consider a semi-infinite one-dimensional phase-change material with two unknown constant thermal coefficients among the latent heat per unit mass, the specific heat, the mass density and the thermal conductivity. Aiming at the…

数学物理 · 物理学 2017-04-13 Andrea N. Ceretani , Domingo A. Tarzia

We study the homogenization of a steady diffusion equation in a highly heterogeneous medium made of two subregions separated by a periodic barrier through which the flow is proportional to the jump of the temperature by a layer conductance…

偏微分方程分析 · 数学 2008-11-08 Abdelhamid Ainouz

Situations where a spontaneous process of energy or matter transfer is enhanced by an external device are widespread in nature (human sweating system, enzyme catalysis, facilitated diffusion across bio-membranes, industrial heat…

统计力学 · 物理学 2010-07-21 Karen Hovhannisyan , Armen E. Allahverdyan

Motivated by nuclear safety issues, we study the heat transfers in a thin cylindrical fluid layer with imposed fluxes at the bottom and top surfaces (not necessarily equal) and a fixed temperature on the sides. We combine direct numerical…

流体动力学 · 物理学 2024-01-17 Florian Rein , Laure Carénini , Florian Fichot , Benjamin Favier , Michael Le Bars