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Fundamental aspects of solids-gas flow: Part I: Introductory concepts and idealised sphere motion in viscous regime



This article introduces a series of analytical and critical literature surveys which deal first with the individual fundamental momentum transfer phenomena associated with particulate motion as affected by particle shape, roughness, acceleration, concentration and rotation, as well as the turbulence characteristics and boundary conditions of the transporting fluid. This information will then be used as a basis of discussion and interpretation of the many investigations of multiparticle solids-gas conveying systems and contacting techniques reported in the literature.

This first paper reviews briefly some pertinent basic concepts of fluid mechanics, and then considers the development of the fluid velocity field and drag for single spherical particles moving rectilinearly at pre-wake-forming Reynolds Numbers through an infinite and undisturbed fluid.

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