Next Article in Journal
Self-Seeded RSOA-Fiber Cavity Lasers vs. ASE Spectrum-Sliced or Externally Seeded Transmitters—A Comparative Study
Next Article in Special Issue
Thermal Performance Evaluation of Fatty Acid Ester and Paraffin Based Mixed SSPCMs Using Exfoliated Graphite Nanoplatelets (xGnP)
Previous Article in Journal
Design and Implementation of an IoT Access Point for Smart Home
Open AccessArticle

Thermal Lattice Boltzmann Simulation of Entropy Generation within a Square Enclosure for Sensible and Latent Heat Transfers

by Alissar Yehya 1,2 and Hassane Naji 1,2,*
1
Laboratoire Génie Civil et géo-Environnement (LGCgE, EA 4525), University of Artois, Béthune F-62400, France
2
Laboratoire Génie Civil et géo-Environnement (LGCgE, EA 4525), Lille University Northern France, Lille F-59000, France
*
Author to whom correspondence should be addressed.
Academic Editor: Takayoshi Kobayashi
Appl. Sci. 2015, 5(4), 1904-1921; https://doi.org/10.3390/app5041904
Received: 7 November 2015 / Revised: 8 December 2015 / Accepted: 8 December 2015 / Published: 17 December 2015
(This article belongs to the Special Issue Phase Change Materials (PCM))
This paper deals with the numerical simulation of heat transfer and entropy generation in a 2D square enclosure for convective melting. A thermal lattice Boltzmann method (TLBM) is used to handle the study, which has been conducted for Prandtl numbers from 0.02 to 70 at Rayleigh numbers of 104 and 105. The results are presented in terms of the total entropy generation, average Bejan number and average Nusselt number. Within the range considered for the key parameters, the entropy generation is found to be controlled by the heat transfer loss for low Prandtl numbers. However, for the large Prandtl numbers, its variation is dominated by shearing losses. Moreover, the presence of the latent heat state decreases the overall thermodynamic losses while increasing the quantity of heat transferred. View Full-Text
Keywords: thermal lattice Boltzmann method; entropy generation; natural convection; phase change; melting; Bejan number. thermal lattice Boltzmann method; entropy generation; natural convection; phase change; melting; Bejan number.
Show Figures

Figure 1

MDPI and ACS Style

Yehya, A.; Naji, H. Thermal Lattice Boltzmann Simulation of Entropy Generation within a Square Enclosure for Sensible and Latent Heat Transfers. Appl. Sci. 2015, 5, 1904-1921.

Show more citation formats Show less citations formats

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop