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Conjugate heat/mass transfer from a circular cylinder with an internal heat/mass source in laminar crossflow at low Reynolds numbers. (English) Zbl 1121.76317
Summary: This paper presents a theoretical study of conjugate heat/mass transfer from a circular cylinder with an internal heat/mass source and a surrounding fluid flow. The heat/mass source consists of a constant temperature/concentration wire imbedded in the cylinder center. A finite difference method discretizes the equations. The multigrid method solves the discrete system. Numerical investigations were carried out for cylinder Re numbers equal to 2 and 20. The values of the $$Pr$$ number were selected such that the product $$Re \times Pr$$ is constant and equal to 100. The main aspect analysed is the influence of the conductivity ratio on the local and average $$Nu$$ numbers at different values of the wire diameter.

##### MSC:
 76D05 Navier-Stokes equations for incompressible viscous fluids 76M20 Finite difference methods applied to problems in fluid mechanics 80A20 Heat and mass transfer, heat flow (MSC2010)
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