Numerical investigation of vapor–liquid heat and mass transfer in porous media

Xin, Chengyun; Rao, Zhonghao; You, Xinyu; Song, Zhengchang; Han, Dongtai

doi:10.1016/j.enconman.2013.10.047

Cited by 58 publications

(16 citation statements)

References 26 publications

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“…Furthermore, since in these regions G * h ¼ k * eff ;f ðdT * =dH * Þ, q * x;f is given by k * eff ;f ðdT * =dx * Þ, which, as expected, is similar to the expression for q * x;s in Eq. (27). In the two-phase region, however, G * h $ ðεK * Þ 1=2 follows a square-root dependence on both ε and K * .…”

Section: Effects Of Porous Media Propertiesmentioning

confidence: 92%

Simulation of complete liquid–vapour phase change process inside porous evaporator using local thermal non-equilibrium model

Mendes

Trimis

Ray

2015

International Journal of Thermal Sciences

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Section: Effects Of Porous Media Propertiesmentioning

confidence: 92%

Simulation of complete liquid–vapour phase change process inside porous evaporator using local thermal non-equilibrium model

Mendes

Trimis

Ray

2015

International Journal of Thermal Sciences

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“…Figures 3 and 4 show that, in all cases, the pressure drop increases quadratically with Dacian velocity, indicating applicability of the Forchheimer Eq. [8]. In order to obtain permeability, K, and form drag coefficient, C, from the numerical results, Eq.…”

Section: A Pressure Dropmentioning

confidence: 99%

“…In order to obtain permeability, K, and form drag coefficient, C, from the numerical results, Eq. [8] can be rearranged to give a linear relationship between DP and u in the form of Eq. [10].…”

Section: A Pressure Dropmentioning

confidence: 99%

“…In this study, the fluid flow is considered to be in the Forchheimer's regime. Equation [8] was therefore used to determine permeability, K, and form drag coefficient, C, from the pressure drop values. …”

Section: Permeability and Form Drag Coefficientmentioning

confidence: 99%

“…For example, Teruel and Rizwan-Uddin [7] numerically calculated the interfacial heat transfer coefficient in porous media. Xin et al [8] numerically investigated the heat and mass transfer behaviors in porous media for multiphase flow. Hwang and Yang [9] simulated the heat transfer and fluid flow characteristics in a metallic porous block subjected to a confined turbulent slot jet.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical Simulation of Heat Transfer in Porous Metals for Cooling Applications

Avalos-Gauna

Zhao

2017

Metall Mater Trans B

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Porous metals have low densities and novel physical, mechanical, thermal, electrical, and acoustic properties. Hence, they have attracted a large amount of interest over the last few decades. One of their applications is for thermal management in the electronics industry because of their fluid permeability and thermal conductivity. The heat transfer capability is achieved by the interaction between the internal channels within the porous metal and the coolant flowing through them. This paper studies the fluid flow and heat transfer in open-cell porous metals manufactured by space holder methods by numerical simulation using software ANSYS Fluent. A 3D geometric model of the porous structure was created based on the face-centered-cubic arrangement of spheres linked by cylinders. This model allows for different combinations of pore parameters including a wide range of porosity (50 to 80 pct), pore size (400 to 1000 lm), and metal particle size (10 to 75 lm). In this study, water was used as the coolant and copper was selected as the metal matrix. The flow rate was varied in the Darcian and Forchheimer's regimes. The permeability, form drag coefficient, and heat transfer coefficient were calculated under a range of conditions. The numerical results showed that permeability increased whereas the form drag coefficient decreased with porosity. Both permeability and form drag coefficient increased with pore size. Increasing flow rate and decreasing porosity led to better heat transfer performance.

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Numerical approach of liquid carbon dioxide injection in crushed coal and its experimental validation

Yang

et al. 2020

Int J Energy Res

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Summary The safety issues are a major restriction on coal mining and growing efforts are being made in the search for solutions that will guarantee sustainable use of energy resources. Liquid carbon dioxide is attracting particular interest of coal fire‐fighting due to the promising efficiency of cooling and asphyxia. Our objective is to develop a valid model to simulate the dispersion and thermal behaviors of liquid carbon dioxide under crushed coal condition and assessment of liquid carbon dioxide injection for coal fire‐fighting. For this purpose, a numerical approach which requires an accurate state equation for calculating physical parameters of carbon dioxide, also accounts for appropriate description of energy transformation during the injection is presented. The validation of such a model against three experimental tests on temperature variation is proposed, and the model has proved capable of accurately predicting the heat and mass transfer process when liquid carbon dioxide is injected into crushed coal. Furthermore, the impact of nozzle diameter on the dispersion and thermal behaviors of liquid carbon dioxide is extensively investigated.

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Numerical investigation of vapor–liquid heat and mass transfer in porous media

Cited by 58 publications

References 26 publications

Simulation of complete liquid–vapour phase change process inside porous evaporator using local thermal non-equilibrium model

Simulation of complete liquid–vapour phase change process inside porous evaporator using local thermal non-equilibrium model

Numerical Simulation of Heat Transfer in Porous Metals for Cooling Applications

Numerical approach of liquid carbon dioxide injection in crushed coal and its experimental validation

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