Radiative Heat Transfer Calculations in Three-Dimensional Complex Geometries

Malalasekera, Weeratunge; James, E. H.

doi:10.1115/1.2824045

Cited by 31 publications

(14 citation statements)

References 6 publications

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“…The discrete transfer method (DTM), developed by Lockwood and Shah [6], has successfully combined the advantageous features of the zone method, the Monte Carlo method, and the flux method, and discarded their disadvantages. It has characteristics of good accuracy, low computation, and suitability for complex geometries, and has successfully solved the general radiation transfer problems [11][12][13][14][15]. Therefore, the DTM was chosen as the radiation transfer model in this work.…”

Section: Comparisonmentioning

confidence: 99%

Modeling and Experiments for Heat Transfer Process in Pulverized Coal-Firing Furnace With Two-Dimensional Radiation Characteristics

Zhang

2009

Heat Transfer Engineering

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A dimension-reducing method for calculating the radiant heat transfer with two-dimensional characteristics is introduced in this article. Using this dimension-reducing method, the two-dimensional discrete transfer method (DTM) was applied to a cylindrical enclosure where the medium was absorptive and emissive. The two-dimensional DTM was proved to produce equivalent prediction results as the three-dimensional radiation computation. Then the two-dimensional DTM was incorporated into a general pulverized coal combustion model to estimate radiant heat transfer. The temperature distribution and the net heat flux distribution of an axisymmetric pilot furnace, in which three kinds of lignite were burned, respectively, were calculated using the comprehensive model. The prediction using this model has been found to have a high agreement with the measured data, that the temperature errors was at ±5% and the net heat flux error was at about ±15%. The results have demonstrated the feasibility and potential of using the two-dimensional DTM for radiation modeling in pulverized coal flame, and confirmed that the dimension-reducing method and the overall model will be simple and convenient for engineers to use.

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Section: Comparisonmentioning

confidence: 99%

Modeling and Experiments for Heat Transfer Process in Pulverized Coal-Firing Furnace With Two-Dimensional Radiation Characteristics

Zhang

2009

Heat Transfer Engineering

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“…Some of the papers are also devoted to 3-D irregular geometries. Malalasekera and James [9] implemented the discrete transfer method to a 3-D L-shaped enclosure and a cylindrical enclosure based on a non-orthogonal, body-fitted coordinate system. [10] also used the discrete transfer method in conjunction with a cell-blocking procedure based on Cartesian coordinate to model combustion and radiative heat transfer in complex three-dimensional tunnel geometry.…”

Section: Introductionmentioning

confidence: 99%

Radiative heat transfer for irregular geometries with the collapsed dimension method

Talukdar

2006

International Journal of Thermal Sciences

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“…A further comparison of methods in a more complex L-shaped geometry (see Figure 4), which can be modelled using a body fitted coordinates system, is given in Figure 5 Figure 5. The discrete transfer solution is from Malalasekera and James (1995). Discrete…”

Section: Methods For Complex Geometries and Recent Advancesmentioning

confidence: 99%

Calculation of Radiative Heat Transfer in Combustion Systems

Malalasekera¹,

Versteeg²,

Henson³

et al. 2002

Clean Air

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Most practical combustion systems involve complex geometry configurations and CFD techniques used for the calculation of flow and combustion in such geometries use body-fitted non-orthogonal mesh systems. This paper reviews some of the currently available radiative heat transfer calculation techniques suitable for such CFD applications. The Monte Carlo method, the discrete transfer method, the YIX method, the discrete ordinates method and the finite volume method are discussed and some notable applications related to combustion problems are reviewed. Comparative results using all the methods outlined are presented for bench mark problems and their applicability to complex geometry situations are discussed. Radiative heat flux predictions for an S.I. engine simulation are presented to demonstrate the capability of the discrete transfer method in a pent-roof complex geometry combustion chamber. The paper also describes a ray based technique for the handling of turbulence-radiation interactions in combustion and its application is demonstrated in the prediction of a methane diffusion flame.

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Radiative Heat Transfer Calculations in Three-Dimensional Complex Geometries

Cited by 31 publications

References 6 publications

Modeling and Experiments for Heat Transfer Process in Pulverized Coal-Firing Furnace With Two-Dimensional Radiation Characteristics

Modeling and Experiments for Heat Transfer Process in Pulverized Coal-Firing Furnace With Two-Dimensional Radiation Characteristics

Radiative heat transfer for irregular geometries with the collapsed dimension method

Calculation of Radiative Heat Transfer in Combustion Systems

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