Abstract
The article considers the issues of numerical modeling of a multi-section heat exchanger using the tools of the OpenFOAM open source package. The multi-section heat exchanger is operated at velocities ranging between 0.1 and 2 m/s. Numerical simulation is carried out for a complete assembly of 8 sections. Each section contains six transverse microchannels with internal fins to increase heat transfer. Hydraulic oil with a kinematic viscosity of 0.000032 m2/s is used as the working fluid. As a result of numerical simulation, the hydrodynamic characteristics at the entrance to the microchannels were evaluated depending on the number of sections, as well as hydraulic resistances were evaluated depending on the pressure drop and the flow velocity of the working fluid.
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