Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
A computational study of the hydrodynamic developing region in single-phase minichannels
Submission Author:
Andrés Paul Sarmiento , SC
Co-Authors:
Andrés Paul Sarmiento, Gustavo Maccari, Fernando Milanese, Marcia Mantelli
Presenter: Andrés Paul Sarmiento
doi://10.26678/ABCM.ENCIT2018.CIT18-0054
Abstract
In many engineering systems, such as compact heat exchangers, system performance depends on laminar flow development in minichannels. This study investigates effects of Reynolds number, hydraulic diameter, and channel aspect ratio on the entrance length in rectangular minichannels. Numerical investigations were performed for minichannels with hydraulic diameters between 1 and 4 mm, Reynolds numbers between 100 and 1000, and channel aspect ratios between 0.5 and 2. The results show good agreement when compared to other correlations for microscale and macroscale.
Keywords
minichannels, pressure drop, hydrodinamic developing region, CFD
