Effects of viscous heating, fluid property variation, velocity slip, and temperature jump on convection through parallel plate and circular microchannels

• Published in: International communications in heat and mass transfer Vol. 37; no. 1; pp. 34 - 38
• Main Authors: Hooman, K., Ejlali, A.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 2010; Elsevier
• Subjects: Applied fluid mechanics; Exact sciences and technology; Fluid dynamics; Fluid flow; Fluidics; Fluids; Fully developed; Fundamental areas of phenomenology (including applications); Liquids; Mathematical analysis; MEMS; Microchannels; Parallel plates; Physics; Scaling effects; Slip; Theoretical; Variable property; Viscous dissipation; MEMS; Fully developed; Scaling effects; Variable property; Viscous dissipation; Theoretical; Perturbation theory; Temperature dependence; Forced convection; Slip velocity; Circular pipe; Theoretical study; Boundary conditions; Temperature jump; Microchannel; Microstructure; Microfluidics; Heat transfer; Parallel plate
• ISSN: 0735-1933; 1879-0178
• DOI: 10.1016/j.icheatmasstransfer.2009.09.011

Theoretical results, based on perturbation techniques, are presented for fully developed, both hydrodynamically and thermally, forced convection in both parallel plate and circular microchannels subject to isoflux wall boundary condition. Scaling effects, including variable property, viscous dissipation, velocity slip, and temperature jump, are studied for flow of both gases and liquids. The interactions between the aforementioned effects, due to temperature-dependence of the fluid properties that couples the momentum and thermal energy equation, are also examined in detail.