Solution of radiative inverse boundary design problem in a combined radiating-free convecting furnace

Mosavati, Babak; Mosavati, M.; Kowsary, Farshad

doi:10.1016/j.icheatmasstransfer.2013.04.011

Cited by 33 publications

(5 citation statements)

References 13 publications

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“…This approach has been used to significantly increase accuracy and/or reduce computational time [96][97][98][99][100][101][102][103][104][105][106], often by orders-of-magnitude compared to conventional MC. Reverse tracing also allowed the straightforward treatment of many inverse problems in radiation [107][108][109][110][111][112][113][114][115][116][117]. Fig.…”

Section: Backward Monte Carlomentioning

confidence: 99%

The Past and Future of the Monte Carlo Method in Thermal Radiation Transfer

Howell

Daun

2021

Journal of Heat Transfer

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Section: Backward Monte Carlomentioning

confidence: 99%

The Past and Future of the Monte Carlo Method in Thermal Radiation Transfer

Howell

Daun

2021

Journal of Heat Transfer

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“…Over the years, several research and development initiatives have been made on the thermal performance enrichment of SAHs [39][40][41][42] After reviewing the various published articles on thermo-hydraulic performance enhancement, it may be summarized that the thermo-hydraulic performance of SAH depends on the change of artificial rough geometry [43][44][45][46]. In addition, for further enhancement in heat transfer, the potential differences in roughness have been utilized.…”

Section: Introductionmentioning

confidence: 99%

Parametric CFD Thermal Performance Analysis of Full, Medium, Half and Short Length Dimple Solar Air Tube

Alam

Souayeh

2021

Sustainability

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In the present decade, research regarding solar thermal air heaters (SAHs) has noticed a continuous progression in thermo-hydraulic performance augmentation approaches. There now exists a wide variety of thermo-hydraulic performance augmentation approaches and researchers have designated various structures. Nevertheless, there seems to be no generalization to any of the approaches employed. The present numerical investigation reports on the thermo-hydraulic characteristics and thermal performance for flow through a varied length (full, medium, half, and short length) dimple solar air heater (SAH) tube. The study highlights recent developments on enhanced tubes to augment heat transfer in SAH. The influence of different length ratio, dimple height ratio (H), and pitch ratio (s) on thermo-hydraulic characteristics have been investigated in the Reynolds number (Re) range from 5000 to 25,000. Air is used as the working fluid. The commercial software ANSYS Fluent is used for simulation. The shear stress transport (SST) model is used as the turbulence model. Thermal energy transport coefficient is increased in the full-length dimple tube (FLDT), compared to the medium-length dimple tube (MLDT), half-length dimple tube (HLDT) and short-length dimple tube (SLDT). Similarly, the pitch ratio (s) has more influence on Nusselt number (Nu) compared to the dimple height ratio (H). The friction factor decreases with an increase in pitch ratio. Nu increases and f decreases with increasing Re for all combinations of H and s. Low s and higher H yields high enhancement of HT and PD. Integration of artificial roughness on the tube increases the values of Nu and f by 5.12 times and 77.23 times for H = 0.07, s = 1.0 at Re value of 5000 and 25,000, respectively, in regard to the plain tube. For all the tested cases, the thermo-hydraulic performances (η) are greater than unity.

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“…The numerical simulation method of convective heat transfer is also important, which determines the reliability and accuracy of the simulation results. Mosavati et al [21,22] proposed a novel calculation method for convective heat transfer in a closed cavity, specifically for the distribution factors using backward Monte Carlo method. Moreover, the effects of Rayleigh number, temperature ratio, radiation conductivity and other parameters on heat flux were studied, and the results were compared and analyzed.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Analysis in Supercritical Hydrogen of Decoupled Poisoned Hydrogen Moderator with Non-Uniform Heat Source of Chinese Spallation Neutron Source

Tong

Zhu

et al. 2021

Energies

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The flow field distribution and thermal properties of supercritical hydrogen are crucial factors affecting the quality of neutrons output from spallation neutron source, which may contribute to the optimization design of the moderator. Several sensitivity studies on affecting heat transfer characteristics of liquid hydrogen inside a moderator were executed, and a choice was made to use a computational fluid dynamics method for numerical simulation. The sensitivity degree of factors affecting the heat transfer characteristics of liquid hydrogen are in sequence of inlet mass flow, beam power and operating pressure. Especially when the beam power is 500 kW (the temperature range of liquid hydrogen is about 20~30 K); where the effect of mass flow rate is remarkable, the cooling effect is best in the range of 60~90 g/s × 394 mm2. Meanwhile, the maximum temperature of liquid hydrogen is close to the bottom recirculation zone due to the influence of the flow field and the heat deposition distribution of the poisoned plate. The effect of variable pressure on the temperature of liquid hydrogen is not significant, whereas the sudden rise of wall temperature is observed near the large specific heat region of 15 bar.

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Solution of radiative inverse boundary design problem in a combined radiating-free convecting furnace

Cited by 33 publications

References 13 publications

The Past and Future of the Monte Carlo Method in Thermal Radiation Transfer

The Past and Future of the Monte Carlo Method in Thermal Radiation Transfer

Parametric CFD Thermal Performance Analysis of Full, Medium, Half and Short Length Dimple Solar Air Tube

Heat Transfer Analysis in Supercritical Hydrogen of Decoupled Poisoned Hydrogen Moderator with Non-Uniform Heat Source of Chinese Spallation Neutron Source

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