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Comparative Analysis of Navier-Stokes Codes - Accuracy and Efficiency
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Abstract
Flow field computations and, in particular, that of pressure, skin friction, and heat transfer (for high speed flights) are the primary parameters in the design of aerospace vehicles. Most computational schemes based on either the inviscid Euler equations or various forms of the Navier-Stokes equations are remarkably accurate in the predictions of pressure distributions. However, computations of skin friction and heat transfer particularly at high speeds have been a source of considerable difficulty. Problems arise not only due to the grid resolution but also due to the particular numerical scheme employed. To address the difficulty associated with accurate computations of the velocity and temperature gradients, a comparative investigation of several Navier- Stokes codes is undertaken. Previous studies with regard to the effect of grid resolution are incorporated into the current investigation. The parametric study includes popular schemes which models the convective terms in the Navier-Stokes equation by second-order central difference approximation, flux-vector splitting schemes, and the addition of linear and nonlinear damping terms.
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Hoffmann, K., Papadakis, M., and Suzen, Y., "Comparative Analysis of Navier-Stokes Codes - Accuracy and Efficiency," SAE Technical Paper 931385, 1993, https://doi.org/10.4271/931385.Also In
References
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