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Keywords: irreversibility
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Journal Articles
Journal Articles
Article Type: Research-Article
J. Heat Mass Transfer. April 2022, 144(4): 042603.
Paper No: HT-21-1619
Published Online: February 10, 2022
... surface temperature, and geometric ratio are varied in the practical range. Results are shown in terms of heat transfer, entropy generation, irreversibility (due to heat transfer and fluid friction), and Bejan number with some relevant parameters. Streamlines and temperature contours are also provided...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. April 2021, 143(4): 042101.
Paper No: HT-20-1344
Published Online: February 22, 2021
... number (10 4 ≤ Ra ≤ 10 8 ), Reynolds number (Re D < 2100), and aspect ratio (1 ≤ L/D ≤ 20). Entropy generation in the system is predominantly triggered by heat transfer in comparison to fluid friction. The irreversibility incurred progressively increases with an increase in Ra and Re D . The variation...
Journal Articles
Article Type: Research-Article
J. Heat Transfer. January 2019, 141(1): 011801.
Paper No: HT-18-1149
Published Online: October 8, 2018
... the rate of irreversibilities. To obtain the efficiencies, irreversibility, thermal performance factor, and entropy generation number (EGN), the heat exchanger is operated at different temperatures and flow rates by using hot and cold fluids. Optimization of the design parameters and winglet geometry...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. September 2010, 132(9): 091701.
Published Online: June 28, 2010
... entropy generation rate, Bejan number, and irreversibility ratio distribution for various rotational Reynolds number and physical cases, using dimensionless parameters. It is demonstrated that increasing rotational Reynolds number increases the local entropy generation rate and irreversibility rate...
Journal Articles
Article Type: Research Papers
J. Heat Transfer. November 2007, 129(11): 1564–1575.
Published Online: February 24, 2007
...Shohel Mahmud; Roydon Andrew Fraser; Ioan Pop Flow, thermal, energy, and irreversibility characteristics inside wavy enclosures packed with microstructures are reported in this paper. It is assumed that the entire enclosure has sufficient and interconnected void spaces; those allow fluid movement...
Journal Articles
Article Type: Technical Briefs
J. Heat Transfer. January 2006, 128(1): 87–92.
Published Online: April 13, 2005
...Hany Ahmed Mohamed Analysis of heat transfer and fluid flow thermodynamic irreversibilities is realized on an example of a counter flow double pipe heat exchanger utilizing turbulent air flow as a working fluid. During the process of mathematical model creation and for different working...