H : specific total enthalpy α : angle of attack h : specific static enthalpy β : sideslip (yaw) angle J r : mass diffusion flux vector γs : recombination coefficient L : characteristic length ∆s : wall-normal grid spacing M : Mach number or molar mass ε : emissivity n : unit normal κ : gas mixture thermal conductivity p : Pressure μ : gas mixture viscosity Q : heat load σ : Stefan-Boltzmann con...

0142-727X/$ see front matter 2008 Elsevier Inc. A doi:10.1016/j.ijheatfluidflow.2008.08.003 * Corresponding author. Tel.: +1 979 845 4500; fax E-mail address: [email protected] (D. Banerjee Surface temperature fluctuations that occur locally underneath departing bubbles in pool boiling are shown to result in local heat transfer coefficients ranging from 1 to 10 kW/cm. These estimates were repo...

This paper presents results of a numerical study of mixed convection and entropy generation of Cu–water nanofluid in a square ventilating cavity at different inclination angles. Except a piece of bottom wall with a uniform heat flux, all of the cavity walls are insulated. The inlet port is placed at the bottom of the left wall and the outlet port is positioned at the top of the right wall....

Flow and thermal convection in heat exchangers can be affected by variations in viscosity. In circular pipes the significance of this effect was expressed by Sieder and Tate’s empirical formula. Similar correction can be derived for other heat transfer problems. Exact solutions for heat transfer during the non-isoviscous laminar flow of Newtonian and non-Newtonian liquids in circular and flat d...

Developing next generation transient heat exchangers is a transformative technology for efficient ther-mal management of advanced power electronics and electric machines (APEEM) inside hybrid electric,electric, and fuel cell vehicles as well as renewable energies (wind, solar, tidal). Optimal design criteriafor such dynamic heat exchangers should be achieved through addressing inter...

Numerical analysis is performed to investigate transport phenomena in channel flows under uniform heating from both side-walls. Emphasis is placed on an effect of heat flux ratio from both sides on the velocity and thermal fields. The twoequation heat-transfer model is employed to determine thermal eddy diffusivity. It is found that (i) under strong heating from both walls, laminarization, i.e....

in this research, the coupling between non-gray radiation and separation convection flow in a duct is investigated numerically. distributions of absorption coefficients across the spectrum  are obtained from the hitran2008 database. the full-spectrum k-distribution method is used to deal with the non-gray part of the problem, while the gray radiation calculations are performed using the planck ...

This article presented a numerical investigation of supercritical heat transfer of hydrocarbon fuel in a series of horizontal tubes with different diameters. It has been carried out by solving Reynolds averaging equations of mass, momentum and energy with the LS low-Reynolds number turbulence model using the pressure-based segregated solver based on the finite volume method. For the purpose of ...