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Vortical Sources of Aerodynamic Force and Moment
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 01, 1989 by SAE International in United States
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It is shown that the aerodynamic force and moment can be expressed in terms of vorticity distribution (and entropy variation for compressible flow) on near wake plane, or in terms of boundary vorticity flux on the body surface. Thus the vortical sources of lift and drag are clearly identified, which is the real physical basis of optimal aerodynamic design. Moreover, these sources are highly compact, hence allowing one to concentrate on key local regions of the configuration, which have dominating effect to the lift and drag. A detail knowledge of the vortical flow requires measuring or calculating the vorticity and dilatation field, which is however still a challenging task. Nevertheless, this type of formulation has some unique advantages; and how to set up a well-posed problem, in particular how to establish vorticity-dilatation boundary conditions, is addressed.
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CitationWu, J. and Wu, J., "Vortical Sources of Aerodynamic Force and Moment," SAE Technical Paper 892346, 1989, https://doi.org/10.4271/892346.
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