• Kashif Faridi
• Firoz Akhtar
• Md Shabbeer Ansari

The different parameters like pressure drop, Nusselt number, Reynolds number, and fluid flow inside the heated microchannels were calculated analytically by using formulae given in the theory, these results were then validated by comparing the predicted local thermal resistances with CFD models using fluent. This work studies the CFD simulation of micro channel flow , pressure drop and single-phase flow friction factor (Po=fRe) of liquid subjected to heat from the bottom of rectangular micro channel and heat conduction in the solids. The single phase models are used for solving the problems. Simulations were performed on the rectangular channel. Width of bottom wall of channel was 210µm; outer side wall height is 810µm, length of channel was 25mm, the thickness of side wall as well as bottom wall was 60µm.The dimension of fluid element inside the channels were, height 750µm width 150µm and length 25mm. The top surface was adiabatic while the two sides were designated symmetric boundary conditions. A uniform heat flux of 240000W/m2 was applied at the bottom surface. The substrate thickness included in the model was chosen to be 60µm, the heat flux in the substrate can be safely assumed to be uniform because of its high thermal conductivity. Nusselt numbers were calculated for the microchannel model for Re no. ranging 131 to 275. For calculating Nusselt numbers and pressure drop wall temperature at different section of microchannels iso-surfaces were created at different section of fluid element perpendicular to the length of microchannel and contact region of wall with fluid.

Micro channel, Reynolds number, Nusselt number, Heat transfer, Pressure drop, Fluid flow, Friction factor

"Numerical Analysis of pressure drop and variation of Nusselt number in microchannel when subjected to uniform heat flux", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.635-640, June 2019, Available :http://www.jetir.org/papers/JETIR1907F86.pdf

"Numerical Analysis of pressure drop and variation of Nusselt number in microchannel when subjected to uniform heat flux", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp635-640, June 2019, Available at : http://www.jetir.org/papers/JETIR1907F86.pdf