Summer Research Fellowship Programme of India's Science Academies

Numerical simulation of fluid flow and heat transfer in miniature channels

Bhavana Kanwar Rao

Undergraduate Chemical Engineering, IIT Ropar, Punjab 140001

Professor Manmohan Pandey

Professor, Mechanical Engineering, IIT Guwahati, Assam 781039


The three-dimensional fluid flow and heat transfer processes in a square miniature channel heat sink are analyzed numerically. The domain of the work is single phase and water is used as working fluid. Conjugate heat transfer and axial heat conduction are taken into account. Variation in viscosity and thermal conductivity of fluid with temperature are considered. Parametric effects are observed for different range of heat flux and mass flux. Simulations are carried out to see the variation of pressure drop, mass weighted average temperature at inlet and outlet, average wall temperature, average fluid temperature. A commercial CFD code Ansys Fluent 14.5 was employed for the numerical simulation. Solidworks has been used to create geometry. Numerical results are compared with experimental results obtained in MTSR Lab, IIT Guwahati. Numerically calculated mass weighted average temperature, axial wall temperature with use of ANSYS-FLUENT at outlet is validated with experimental data.

Keywords: temperature gradient, pressure drop, variable fluid properties, conjugate heat transfer, axial heat conduction

Written, reviewed, revised, proofed and published with