Effect of corrugation angle on the thermal behaviour of power-law fluids during a flow in plate heat exchangers
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In this study, CFD calculations were made in order to analyze the thermal behaviour of a power-law fluid in the channels of plate heat exchangers with corrugation angles of 30º and 60º.
For the observed laminar flow, the numerical results show the absence of a typical local temperature profile in the 3D channel. Local Nusselt numbers and transversal variations of viscosity along the plate heat exchangers were studied and simulations considering and discarding the influence of temperature on the non-Newtonian fluid viscosity were performed for the two geometries and the impact of these variations on the thermal correlations was analyzed
Local and average Nusselt numbers of power-law fluids were studied on PHE channels
with different corrugation angles, being the effect of the temperature on viscosity also
considered on the thermal correlations development.
