Discipline: Technology and Engineering
Subcategory: Civil/Mechanical/Manufacturing Engineering
Justin Moon - California State University, Los Angeles
Co-Author(s): ARTURO PACHECO-VEGA, California State University - Los Angeles, Los Angeles, California; J. RAFAEL PACHECO-Vega, SAP Americas, Tempe, Arizona
In this study, numerical simulations are performed to investigate the heat transfer in three-dimensional multi-harmonic microscale wavy channels. The focuses are on the analysis of the channel surface-topography, modeled as a sinusoidal wave of square cross-sectional area, through which the cold water within the laminar regime flows, and on its influence on the enhancing mechanisms. A device of length of 20 mm, 16 mm of which are of sinusoidal shape, with 2 mm straight sections at the channel inlet
and outlet, is used as baseline for comparison purposes. The channel is enclosed
by a solid rectangular prism block, on which heat flux of 47 W/cm2 acts at the
bottom surface within the sinusoidal region. Using the performance factor (P F);
i.e., the ratio of the Nusselt number to the pressure drop, as objective function, a
parametric analysis is carried out for a set of inlet velocities (Re=50, 100 and 150),
to investigate whether (and how) the addition of harmonic-waves for the channel
geometry enhances the value of the PF in comparison to that of a single-wave device.
Funder Acknowledgement(s): This work has been supported by NSF HRD-1547723
Faculty Advisor: Dr. Arturo Pacheco-Vega, email@example.com
Role: My contribution includes the mathematical modeling of the system. I conducted the computer simulations, and analyzed the numerical simulations. More data regarding the effects due to the harmonics were my supplemental efforts.