Experimental investigation on the evaporation of a wet porous layer inside a vertical channel with resolution of the heat equation by inverse method

Terzi, A.; Foudhil, Walid; Harmand, Souad; Jabrallah, Sadok Ben

doi:10.1016/j.enconman.2016.07.085

Cited by 11 publications

(1 citation statement)

References 30 publications

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“…One of the most important parameters in this problem is the drying rate in different cross‐sections of the channel length. The drying rate obtained from the numerical simulation in two different thermal fluxes and input mass flow rates were compared with experimental data of research by Terzi et al The result of this comparison showed that this new solver can precisely solve the thermal phase change in a porous medium (Figure ). Also, in different boundary conditions, it can well calculate the location and time of the beginning of the phase change, as well as the location and time of the wall dry‐out phenomenon.…”

Section: Resultsmentioning

confidence: 99%

Numerical study of effective parameters on the drying process in a vertical porous channel

Gholami

Kouhikamali

Sharifi

2019

Heat Trans. Asian Res.

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Comprehensive understanding of evaporation in porous channels is important for the design of modern heat exchangers and thermal systems such as heat pipes. This paper presents a numerical study of evaporation in a vertical porous channel. The volume of the fluid method was applied to capture the interface between phases. The multi-dimensional limiter for explicit solution method, in which there are additional constraints based on the flux-corrected transfer method, was used to solve the interface transfer equation. Pressure drop, Nusselt number, and the drying rate were considered as performance parameters. Comparing simulation results with experimental data showed that this new solver can precisely solve the thermal phase change in a porous medium. The influence of parameters effective on the drying process, such as porosity, permeability, the dynamic contact angle was investigated. Based on the results of the pressure profile in the final state, four different regions are visible. Because of the close fit of the wall temperature to the average cross-sectional temperature, the Nusselt number increases sharply at transition points from the liquid to the vapor phase.By increasing the dynamic contact angle, the average drying rate in the channel is reduced. K E Y W O R D S effective parameters, evaporation, porous medium, vertical channel, VOF method

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Section: Resultsmentioning

confidence: 99%