![]() ![]() Maechler, “Matrix: Sparse and dense matrix classes and methods,” R package version 1.3–4, (2021). The reciprocal theorem in fluid dynamics and transport phenomena,” J. Heat and mass transfer investigation of rotating hydrocarbons droplet which behaves as a hard sphere,” Appl. On the existence of logarithmic terms in the drag coefficient and Nusselt number of a single sphere at high Reynolds numbers,” e-print arXiv:2007.10214 (2020). , Google Scholar Crossrefĭrag of a heated sphere at low Reynolds numbers in the absence of buoyancy,” J. On the possibility to improve heat transfer of a sphere by natural convection and water mist,” J. , Google Scholar Scitation, ISIĪ detailed investigation on the effect of the Sherwood and Nusselt number modelling for the heating and evaporation of a single suspended water droplet,” J. Risk assessment of COVID infection by respiratory droplets from cough for various ventilation scenarios inside an elevator: An OpenFOAM-based computational fluid dynamics analysis,” Phys. On coughing and airborne droplet transmission to humans,” Phys. Heat transfer from a sphere in a stream of small Reynolds number,” J. (82)90003-9, Google Scholar CrossrefĬomprehensive, theoretically based, correlating equations for free convection from isothermal spheres,” Chem. Heat or mass transfer from single spheres in a low Reynolds number flow,” Int. Heat and mass transfer from single spheres in Stokes flow,” Phys. , Google Scholar CrossrefĮvaporation from drops: Part I,” Chem. The convection and conduction heat flows are parallel to each other and to the surface normal of the boundary surface, and are all perpendicular to the mean fluid flow in the simple case.Forced convection heat transfer correlations for flow in pipes, past flat plates, single cylinders, single spheres, and for flow in packed beds and tube bundles,” AIChE J.ġ8, 361– 371 (1972). A larger Nusselt number corresponds to more active convection, with turbulent flow typically in the 100–1000 range. A similar non-dimensional parameter is Biot Number, with the difference that the thermal conductivity is of the solid body and not the fluid.Ī Nusselt number close to one, namely convection and conduction of similar magnitude, is characteristic of " slug flow" or laminar flow. The conductive component is measured under the same conditions as the heat convection but with a (hypothetically) stagnant (or motionless) fluid. Named after Wilhelm Nusselt, it is a dimensionless number. ![]() In this context, convection includes both advection and diffusion. In heat transfer at a boundary (surface) within a fluid, the Nusselt number ( Nu) is the ratio of convective to conductive heat transfer across ( normal to) the boundary. ![]()
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