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    A solution to the Navier-Stokes equations based upon the Newton Kantorovich method (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: An implicit finite difference scheme based on the Newton-Kantorovich technique was developed for the numerical solution of the nonsteady, incompressible, two-dimensional Navier-Stokes equations in conservation-law form. The algorithm was second-order-time accurate, noniterative with regard to the nonlinear terms in the vorticity transport equation except at the earliest few time steps, and spatially factored. Numerical results were obtained with the technique for a circular cylinder at Reynolds number 15. Results indicate that the technique is in excellent agreement with other numerical techniques for all geometries and Reynolds numbers investigated, and indicates a potential for significant reduction in computation time over current iterative techniques.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA-TM-78437 , A-7212
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Large eddy simulation of homogeneous isotropic turbulence (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: This paper presents results from a comprehensive investigation of large-eddy simulations of homogeneous isotropic turbulence. Calculations have been made using grid meshes, a number of flowfield filters, and two simple subgrid scale turbulence models. Particular attention has been paid to the degree of isotropy and the ability of the approach to predict higher-order statistical quantities (skewness and flatness). Directions for needed improvement in the simulation approach are indicated, and a plea is made to experimenters to process their data in a way which will facilitate comparison with large eddy simulations.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: Symposium on Turbulent Shear Flows; Apr 18, 1977 - Apr 20, 1977; University Park, PA
    Format: text
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    NASA TECHNICAL REPORTS
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