An analysis of vorticity force versus pressure-friction for incompressible flow

Abstract eng:
Over the years, we have proposed a force decomposition to quantify the contributions to the forces exerted on the plate in terms of all the fluid elements with nonzero vorticity. This presentation is aimed to illustrate the usefuh1ess that the force element analysis complements the traditional analysis based on pressure and friction. An example of flow over a delta wing is provided to examine various contributions to the forces on an impulsively started finite plate from the perspective of a force- element representation The present vorticity force analysis (VFA) was made parallel to the pressure force analysis (PFA) by examining the sectional force contributions along the wing span, but can further extend to include the outer regions of tip vortices.

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