International Journal of Thermal Sciences

Journal: International Journal of Thermal Sciences

Abbreviation

Int. j. therm. sci.

Publisher

Elsevier

ISSN

1290-0729
1778-4166

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Publications1 - 10 of 18

A cavity-receiver containing a tubular absorber for high-temperature thermochemical processing using concentrated solar energy
Melchior, Tom; Perkins, Christopher; Weimer, Alan W.; et al. (2008)
International Journal of Thermal Sciences
Large eddy simulations of wall heat transfer and coherent structures in mixed convection over a wavy wall
Kuhn, Simon; Kenjeres, Sasa; Rudolf von Rohr, Philipp (2010)
International Journal of Thermal Sciences
A direct method to calculate the heat transfer coefficient of steady similar boundary layer flows induced by continuous moving surfaces
Magyari, E.; Keller, B. (2005)
International Journal of Thermal Sciences
Linear stability analysis of the steady thermal regimes of a packed bed reactor with an organized structure
Magyari, Eugen (2009)
International Journal of Thermal Sciences
Large-eddy simulation of wind-driven flame in the atmospheric boundary layer
Ong, Robert H.; Patruno, Luca; He, Y.; et al. (2022)
International Journal of Thermal Sciences
The interaction between the natural ambient winds found in the atmospheric boundary layer (ABL) and buoyant flames is crucial in broad applications in the scientific and engineering fields. Unlike the buoyancy-driven pool fires in still air that have been studied extensively, the complexity of physics changes significantly in wind presence. This study aims at analysing the characteristics of boundary-layer turbulence in the presence of large fires. The eddy dissipation concept, finite volume discrete ordinate method, and one k-equation model are used for combustion, thermal radiation, and sub-grid scale closure using the Large-Eddy Simulation (LES), respectively. A numerical model on simple cases is validated first to assess its capability to reproduce available experimental observations for a purely buoyant fire in still air. A forced-flow boundary layer combustion in a small chamber with a smooth inflow is further considered. In general, good agreement between the simulation results and available experimental data was achieved for temperature and velocity profiles. The unsteady inflow condition used to consider incoming atmospheric turbulence is generated through a precursor simulation. The wind interaction with the line fire changes the atmospheric boundary layer profile affecting the heat transfer ahead of the flame, thereby creating counter-rotating structures downstream. It is shown that the buoyancy-dominated flow due to the flame reaction induced local pressure variation and perturbed shear flow near the ground, thereby altering the wind speed through which the plume rises. Richardson number was also used as a dominant non-dimensional group to analyse the variation of enhanced flow vertical velocity with distance from the fire source. Thus, it is understood that the pronounced longitudinal shear spreading at the surface affects the behaviour of short term or puff releases, suggesting the shedding of small eddies during the combustion process.
Combined effect of heat generation or absorption and first-order chemical reaction on micropolar fluid flows over a uniformly stretched permeable surface
Magyari, Eugen; Chamkha, Ali J. (2010)
International Journal of Thermal Sciences
A moving finite line source model to simulate borehole heat exchangers with groundwater advection
Molina-Giraldo, Nelson; Blum, Philipp; Zhu, Ke; et al. (2011)
International Journal of Thermal Sciences
CFD modeling of convective scalar transport in a macroporous material for drying applications
Lal, Sreeyuth; Lucci, Francesco; Defraeye, Thijs; et al. (2018)
International Journal of Thermal Sciences
The moving plate thermometer
Magyari, E. (2008)
International Journal of Thermal Sciences
The Entrainment Theorem for the Darcy free convection over a permeable vertical plate
Magyari, Eugen; Rees, D. Andrew S. (2008)
International Journal of Thermal Sciences

Publications1 - 10 of 18

Journal: International Journal of Thermal Sciences

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