Effects of Boundary Conditions on Thermal Response of a Cellulose Acetate Layer Using Hottel’s Zonal Method

Safavisohi, Babak; Sharbati, Ehsan; Aghanajafi, Cyrus; Firoozabadi, Seyed Reza Khatami

doi:10.1007/s10894-006-9017-6

Cited by 5 publications

(3 citation statements)

References 13 publications

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“…8. Other numerical methods for the computation of radiative effects in transient heat transfer are discrete ordinates, [9][10][11][12] Hottel's zonal method, [13][14][15] radiative diffusion, 16 differential approximation, 17 various expansion methods, 18 and the Monte Carlo method. 19 The thermal behavior of polycarbonate (PC), which is widely used in aerospace applications, is of significant importance because thermal stresses, which are present in such applications, can play a role in design considerations.…”

Section: Introductionmentioning

confidence: 99%

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Finite difference solution for radiative–conductive heat transfer of a semitransparent polycarbonate layer

Safavisohi¹,

Sharbati²,

Aghanajafi³

et al. 2009

J of Applied Polymer Sci

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Thermal radiation greatly affects the transient thermal response of translucent materials in many practical applications, such as radiative heat shields and ignition and flame spreads for translucent plastics. However, because of the complexities that transients impose, less work has been done on the transient analysis of combined radiation-conduction heat transfer than on steady-state analysis. In this study, the transient heat transfer analysis of a polycarbonate (PC) layer was done with the use of the two-flux method and implicit finite difference formulations. The radiative and conductive properties of PC available in the literature, together with computer implementation prepared on the basis of the two-flux method and implicit finite difference formulations, were used to obtain the transient thermal response of a PC layer. On the basis of these results, we show that, compared to the conduction-alone case, the PC layer responded faster when radiation effects were considered. It is also shown that the internal reflectivity of boundaries had a great effect on the thermal response of the layer, whereas the thermal conductivity had a minor influence.

show abstract

Section: Introductionmentioning

confidence: 99%

“…. Other numerical methods for the computation of radiative effects in transient heat transfer are discrete ordinates,9–12 Hottel's zonal method,13–15 radiative diffusion,16 differential approximation,17 various expansion methods,18 and the Monte Carlo method 19…”

Section: Introductionmentioning

confidence: 99%

Finite difference solution for radiative–conductive heat transfer of a semitransparent polycarbonate layer

Safavisohi¹,

Sharbati²,

Aghanajafi³

et al. 2009

J of Applied Polymer Sci

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show abstract

“…Using the ray-tracing method, previous work can but solve the radiative transfer in the medium having two specular surfaces [17][18][19][20] or two diffuse surfaces [21]. For the medium having one specular surface and another diffuse surface (S-D surfaces), the radiative transfer problem has not been solved by this method.…”

Section: Introductionmentioning

confidence: 99%

Radiative heat transfer in a participating medium with specular–diffuse surfaces

Zhen

Tan

et al. 2009

International Journal of Heat and Mass Transfer

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Ignition characteristics of single coal particles from three different ranks in O2/N2 and O2/CO2 atmospheres

Khatami

Stivers

Levendis

2012

Combustion and Flame

210

116

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Effects of Boundary Conditions on Thermal Response of a Cellulose Acetate Layer Using Hottel’s Zonal Method

Cited by 5 publications

References 13 publications

Finite difference solution for radiative–conductive heat transfer of a semitransparent polycarbonate layer

Finite difference solution for radiative–conductive heat transfer of a semitransparent polycarbonate layer

Radiative heat transfer in a participating medium with specular–diffuse surfaces

Ignition characteristics of single coal particles from three different ranks in O2/N2 and O2/CO2 atmospheres

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