Siberian Federal University

An important aspect in designing efficient micro heat sink devices is selecting the optimal geometry of the internal microstructure of microchannels to minimize hydrodynamic resistance and enhance transverse flows. This work investigates the influence of altering the internal configuration of microchannels with an array of cylindrical pins on the hydrodynamic features of viscous incompressible fluid flow. The numerical approach used to solve the Stokes equations in three dimensions for asymmetric domains is based on the boundary element method accelerated by the fast multipole method on heterogeneous computing architectures. Validation of the developed software modules was carried out by comparing them with experimental data obtained from microfluidic chips. A series of calculations was performed, and new data were obtained on the effect of changing the pin packaging parameters within a microchannel element on the intensification of transverse flows and the variation in throughput capacity