Numerical Optimization of a Microchannel Geometry for Nanofluid Flow and Heat Dissipation Assessment

In this study, a numerical approach was carried out to analyze the effects of different geometries microchannel heat sinks on forced convective transfer in single-phase flow. The simulations were performed using commercially available software COMSOLMultiphysics 5.6® (Burlington, MA, USA) and its results compared with those obtained from experimental tests polydimethylsiloxane (PDMS). Distilled water used as working fluid under laminar flow regime, maximum Reynolds number 293. Three sets investigated: rectangular, triangular circular. configurations characterized based orientation, type collector parallel channels. main show that rectangular shaped one led greater uniformity distribution microchannels. Similar also for circular shape. For geometry, however, disturbance jet impingement observed, leading least uniformity. increase channels enhanced and, consequently, improved performance, which must be considered optimize new sink designs. achieved optimized design sink, microchannels nanofluid higher dissipation rate, comprised eight vertical placement inlet outlet.