dc.contributor.advisor |
Azizi, Fouad |
dc.contributor.author |
Ataya, Sahar |
dc.date.accessioned |
2022-02-02T10:38:38Z |
dc.date.available |
2022-02-02T10:38:38Z |
dc.date.issued |
2/2/2022 |
dc.date.submitted |
2/2/2022 |
dc.identifier.uri |
http://hdl.handle.net/10938/23290 |
dc.description.abstract |
To improve mixing quality and thermal homogeneity in small scale industrial applications involving viscous fluids, different microstructures have been designed. Split-and-Recombine (SAR) microstructures are one of the designs that have been extensively studied due to their compactness and efficiency.
The current work is a numerical study that describes the mixing, hydrodynamic and thermal performance of a new SAR geometry design used as a multifunctional heat exchanger. This new design utilizes double separation and recombination to achieve good mixing and heat transfer in a very compact structure. For this purpose, computational fluid dynamics tools were used to compute and assess mixing indices, pressure drop, friction factor, and thermal homogenization for a viscous fluid at different flow conditions. The findings were compared against two commonly used SAR mixers in the literature in the Reynolds range of 1 to 300. The results show that for Re<200, the new Double SAR design show mixing performance comparable to Chen SAR, but superior to Gray SAR design. Beyond Re=200 all the designs exhibited perfect mixing >99%. On the other hand, the thermal-hydraulic performance of the Double SAR was lower yet close to that of Gray SAR (with difference ranging between 19 % and 25%). Nonetheless, it was superior to the thermal- hydraulic performance of Chen SAR (with difference ranging between 70 % and 85%). Hence, the new Double SAR design has proved to offer a balance performance: achieving both good mixing quality and thermal homogenization at low energy expenditure. |
dc.language.iso |
en |
dc.title |
CFD SIMULATION OF LAMINAR FLOWS IN A NOVEL PRINTED-CIRCUIT HEAT EXCHANGER |
dc.type |
Thesis |
dc.contributor.department |
Baha and Walid Bassatne Department of Chemical Engineering and Advanced Energy |
dc.contributor.faculty |
Maroun Semaan Faculty of Engineering and Architecture |
dc.contributor.institution |
American University of Beirut |
dc.contributor.commembers |
Saad, Walid |
dc.contributor.commembers |
Darwish, Marwan |
dc.contributor.commembers |
Habchi, Charbel |
dc.contributor.degree |
MS |
dc.contributor.AUBidnumber |
201402966 |