Abstract
Convective heat transfer to an impinging air jet is known to yield high local and area-average Nusselt numbers. We simulate this heat transfer over a wide range of study parameters, including Reynolds number and mist mass fraction, and three jet shapes: circular, half circuit, and quarter circuit. Simulations show that when compared with air only, mist provides higher heat-transfer enhancements for the first two shapes but is insignificant for the third. The area-average Nusselt number is higher by ∼100% for the half-circuit jet than for the circular jet for both single-phase air and mist. With 0.5% mist, the area-average Nusselt number of the circular jet is enhanced by 41% at Reynolds number 10000.
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