  The liquid flow and conjugated heat transfer performance of single-phase
laminar flow in rectangular microchannels equipped with longitudinal vortex
generators (LVGs) are numerically investigated. Deionized-water with
temperature-dependent thermo-physical properties is employed to conduct the
simulations. Three-dimensional simulations are performed using an open-source
flow solver based on finite volume approach and SIMPLEC algorithm. Five
different configurations of the microchannel with different angles of attack of
the LVGs are considered. Simulation results are compared with available
experimental data and a deviation below 10% is achieved. The results show that
there is a 2-25% increase in the Nusselt number for microchannels with LVGs,
while the friction factor increased by 4-30%, for Reynolds number ranged from
100 to 1100. Except one at Re=100, the overall performance of the all
configurations of microchannels with LVGs is higher than one.
