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  • 1
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    The 3D Euler solutions using automated Cartesian grid generation (1993)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Viewgraphs on 3-dimensional Euler solutions using automated Cartesian grid generation are presented. Topics covered include: computational fluid dynamics (CFD) and the design cycle; Cartesian grid strategy; structured body fit; grid generation; prolate spheroid; and ONERA M6 wing.
    Keywords: COMPUTER PROGRAMMING AND SOFTWARE
    Type: NASA. Langley Research Center, Unstructured Grid Generation Techniques and Software; p 251-260
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    AMR on the CM-2 (1992)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: We describe the development of a structured adaptive mesh algorithm (AMR) for the Connection Machine-2 (CM-2). We develop a data layout scheme that preserves locality even for communication between fine and coarse grids. On 8K of a 32K machine we achieve performance slightly less than 1 CPU of the Cray Y-MP. We apply our algorithm to an inviscid compressible flow problem.
    Keywords: COMPUTER PROGRAMMING AND SOFTWARE
    Type: NASA-CR-190747 , NAS 1.26:190747 , RIACS-TR-92-16
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Modeling Issues in Asteroid-Generated Tsunamis (2018)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: This report studies tsunamis caused by asteroids, both those that arise from atmospheric blast waves moving across the water surface from airburst asteroids, and those that arise when the asteroid reaches the water and forms a crater. We perform numerical experiments that compare simulations using depth-averaged models (shallow water and several forms of Boussinesq) with linearized Euler (acoustics plus gravity) and ALE hydrocode simulations. We find that neither of the depth-averaged models do a good job of initiating the tsunami, but in some cases can be used to propagate a solution generated by a higher-fidelity method. A list of our conclusions and recommendations for further study is given in Section 5.
    Keywords: Oceanography
    Type: NASA/CR-2018-219786 , ARC-E-DAA-TN53167
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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