Journal
JOURNAL OF NANOFLUIDS
Volume 11, Issue 1, Pages 99-112Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jon.2022.1819
Keywords
Bionanofluid Heat Transfer; Entropy Generation; MHD; Heat Exchanger; LBM
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This study numerically investigates magnetized conjugate heat transport in a divided L-shaped heat exchanger using the Lattice Boltzmann technique. The results show that heat transport is enhanced by increasing the Ra number, while the strength of the magnetic field reduces heat transport and entropy generation. Furthermore, the Bejan number remains constant for a fixed Ra number but increases with increasing Ra.
The current paper aims to investigate numerically the magnetized conjugate heat transport in a divided L-shaped heat exchanger (HE) filled with eco-nanofluid (functionalized graphene nanoplatelet (GnPs) dispersed in water) utilizing Lattice Boltzmann technique. Experimental correlations for thermo physical proprieties of the green nanofluid are utilized to study the flow pattern and conjugate heat transport inside the divided L-shaped HE. The entropy generation is also analyzed. Results are mainly presented using streamline, isotherms, entropy generation, Bejan number and average Nusselt number for various terms such as Ra numbers, Ha numbers and temperature. The obtained findings show that the heat transport enhances via increasing Ra number. The augmentation of magnetic field strength reduces the heat transport and the generated entropy. This behavior becomes remarkable for Ra = 10(5). Moreover, The Bejan number is kept constant for Ra = 10(3) for all Ha number and increasing the Ra, the Bejan number increases with Ha. Besides, the increase in temperature rises the heat transport rate and reduces the entropy generation; nevertheless, the Bejan number is kept constant for all temperature values.
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