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    Laser velocimeter and total pressure measurements in circular-to-rectangular transition ducts (1988)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A comprehensive set of total pressure and three-component laser velocimetry (LV) data were obtained within two circular-to-rectangular transition ducts at low subsonic speeds. This set of reference data was acquired for use in identifying secondary flow mechanisms and for assessing the accuracy of computational procedures for calculating such flows. Data were obtained at the inlet and exit planes of an aspect ratio three duct having a length-to-diameter ratio of one (AR310) and an aspect ratio six duct having a length-to-diameter ratio of three (AR630). Each duct was unseparated throughout its transition section. It is therefore concluded that secondary flows can play an important part in the fluid dynamics of transition ducts and needs to be addressed in computational analysis. The strength of the secondary flows depends on both the aspect ratio and relative axial duct length.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA-CR-182286 , NAS 1.26:182286 , UTRC-87-41
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Parallel multilevel adaptive methods (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The progress of a project for the design and analysis of a multilevel adaptive algorithm (AFAC/HM/) targeted for the Navier Stokes Computer is discussed. The results of initial timing tests of AFAC, coupled with multigrid and an efficient load balancer, on a 16-node Intel iPSC/2 hypercube are included. The results of timing tests are presented.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: International Conference on Numerical Methods in Fluid Dynamics; Jun 27, 1988 - Jul 01, 1988; Williamsburg, VA; United States
    Format: text
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    NASA TECHNICAL REPORTS
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