Abstract
INVESTIGATION OF AXIAL HEAT CONDUCTION FLUX IN RECTANGULAR PARALLEL FLOW MICROCHANNEL HEAT EXCHANGER WITH NO-SLIP FLOW
Avinash Yadav*, Dr. Satyendra Singh, Ravi Kumar and Lokesh Chandra Joshi
ABSTRACT
In this paper the axial heat conduction in a rectangular microchannel heat exchanger is numerically investigated. The flow is taken as laminar, 3D, incompressible, single-phase, steady state flow. The behavior of axial heat conduction in the separating wall for different Reynolds number is studied. The solution was obtained by solving the continuity and Navier? Stokes equations for the hot and cold fluids by using the pressurecorrection method to obtain the velocity distribution, and then the energy equations were solved for the two fluids and the separating wall simultaneously to obtain the temperature distribution in FLUENT code 16.0. Various parameters that can have effect on the axial heat conduction were investigated. In the result it is observed that, the axial heat conduction plays an important role at the entrance of the channel, velocities of hot fluid and cold fluid are increasing at the entrance of the channel as increases in Reynolds number.
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