Heat transfer between wall and packed bed crossed by low velocity airflow

Laguerre, Onrawee; Amara, S. Ben; Flick, Denis

doi:10.1016/j.applthermaleng.2006.01.011

Cited by 31 publications

(25 citation statements)

References 15 publications

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“…Forced convection Radial and axial heat transfer between walls and a packed bed of spheres of diameter d = 3.8 cm with an air flow of rather low velocity was studied by Laguerre et al [5]. Their approach distinguishes fluid and solid phase temperatures to characterize the heat transfer between both wall and air as well as between a wall and adjacent particles.…”

Section: Convective Heat Transfermentioning

confidence: 99%

“…Practical working equations for the solution of problems with some restrictions involving this type of heat transfer were developed. An extensive review of problems and models of fluid flow, heat and mass transfer in porous media may be found in Nithiarasu et al [69], Swailes and Potts [6], Laguerre et al [5], and Venugopal et al [7].…”

Section: Two-phase (Heterogeneous) Modelsmentioning

confidence: 99%

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Simulation of thermal conversion of solid fuel by the discrete particle method

Peters¹,

Džiugys²,

Navakas³

2011

Lith. J. Phys.

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We introduce the discrete particle method (DPM) that derives from the discrete element method (DEM). This is an advanced numerical simulation tool that takes into account both motion and chemical conversion of granular material, such as coal or biomass, in furnaces in conjunction with computational fluid dynamics (CFD). However, predictions of solely motion or conversion in a decoupled mode are also applicable. The DPM uses object oriented computational techniques that support objects representing three-dimensional particles of various shapes, size, and physical properties of particle material. This makes DPM a highly versatile tool in dealing with a variety of problems related to different industrial applications of granular matter. A review of literature concerning different approaches to mass and heat transfer in packed beds is presented.

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Section: Convective Heat Transfermentioning

confidence: 99%

Section: Two-phase (Heterogeneous) Modelsmentioning

confidence: 99%

Simulation of thermal conversion of solid fuel by the discrete particle method

Peters¹,

Džiugys²,

Navakas³

2011

Lith. J. Phys.

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show abstract

“…A correct orientation of the air flow inside the equipment and around the product can significantly reduce processing times (Cortbaoui et al, 2006). Surface area of contact between products and cooling air and products arrangement are other parameters that affect forced air cooling (Baird et al, 1988;Fraser, 1998;Laguerre et al, 2006). In industrial plants, air flow is highly turbulent due to the fans movement and to wakes originated from upstream obstacles.…”

Section: Air Flowmentioning

confidence: 99%

Comparison of the Effects of Air Flow and Product Arrangement on Freezing Process by Convective Heat Transfer Coefficient Measurement

Barbin¹,

Silveira²

2011

Heat Transfer - Theoretical Analysis, Experimental Investigations and Industrial Systems

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“…The results noted that contraction of particles applied to the packing in order to enable finite-volume meshing leads to underestimation of the transverse dispersion. An extensive review of fluid flow problems involving heat and mass transfer in porous media are provided by Laguerre et al [6], Swailes and Potts [7], Venugopal et al [8], Nithiarasu et al [9] and Papadikis et al [10].…”

Section: Introductionmentioning

confidence: 99%

Applying XDEM to Analyze the Heat-up Process of Woody Biomass on a Backward Acting Grate

Mohseni¹,

Peters²,

Džiugys³

2017

JEPE

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Abstract:The objective of this study is analysis of heat-up process of wet woody particles on a backward acting grate including dynamics motion investigation by implementing XDEM (extended discrete element method) as a novel approach. In this method, the particles are resolved as the discrete phase (individual elements) coupled via heat, mass and momentum transfer to the continuous gas phase. The temperature of particulates along the backward acting grate is investigated by evaluating effects of operating parameters such as bar amplitude and period. Furthermore, the bar motion has effects largely on the heat-up process of the packed bed on the backward acting grate which is considered here as well. In other words, motion of particles caused by bar motion influences the heat transfer of particles and totally the packed bed. In fact, the particles' heat-up is performed by a radiative heat flux facing the packed bed surface so that heat transfer of particles as radiation and conduction with surrounding particles is taken into account in addition to convection heat transfer between particles and surrounding gas phase.

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Heat transfer between wall and packed bed crossed by low velocity airflow

Cited by 31 publications

References 15 publications

Simulation of thermal conversion of solid fuel by the discrete particle method

Simulation of thermal conversion of solid fuel by the discrete particle method

Comparison of the Effects of Air Flow and Product Arrangement on Freezing Process by Convective Heat Transfer Coefficient Measurement

Applying XDEM to Analyze the Heat-up Process of Woody Biomass on a Backward Acting Grate

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