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  • 1
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    Viscoelastic relaxation in liquids and polymers (1965)
    In:  Other Sources
    Details
    Publication Date: 2019-01-25
    Description: Viscoelastic relaxation in liquids and polymers
    Keywords: FLUID MECHANICS
    Type: Proceedings of the Fourth International Congress on Rheology, Part 1; NASA-CR-80885
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    On the numerical solution of two-dimensional, laminar compressible flows with imbedded shock waves. (1972)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The complete, time-dependent Navier-Stokes equations are expressed in conservation form and solved by employing an explicit finite difference numerical technique which incorporates artificial viscosity terms of the form first suggested by Rusanov for numerical stability in the vicinity of shock waves. Surface boundary conditions are developed in a consistent and unique manner through the use of a physically oriented extrapolation procedure. From numerical experimentation an extended range for the explicit stability parameter is established. Also employed is an additional convergence parameter which relates incremental spatial steps. Convergence of the transient solution to a steady state flow was obtained after 400 to 500 time steps.
    Keywords: FLUID MECHANICS
    Type: ASME PAPER 72-FE-7
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Flow field measurements for cylindrical configurations in a hypersonic wind tunnel: Windward and leeward flow fields (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Windward and leeward measurements were made for a variety of simulated infinite cylinders exposed to hypersonic streams over an angle of attack from 30 deg to 90 deg. For the range of conditions included in the study, the following conclusions are made: (1) Swept cylinder theory provides a reasonable correlation of the measured laminar heat transfer rates from the plane of symmetry. (2) The boundary layer transition criteria in the plane of symmetry are a function of the transverse curvature. (3) Relaminarization of the circumferential boundary layer for a right circular cylinder was observed at the highest Reynolds number tested. (4) The effect of leeside geometry on the average heat transfer rate can be correlated with a single geometric parameter which is dependent on the location of separation. (5) The relationship of leeward heating to angle of attack is virtually linear for each cross section. (6) No systematic effect of free stream Reynolds number was observed.
    Keywords: FLUID MECHANICS
    Type: NASA-CR-115467 , REPT-71007
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Improved linearized velocity profiles for turbulent free shear layers (1969)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Linearized velocity profiles for turbulent free shear layers using transverse shift and longitudinal motion equation
    Keywords: FLUID MECHANICS
    Type: ASME PAPER 69-WA/APM-28 , AMERICAN SOCIETY OF MECHANICAL ENGINEERS, WINTER ANNUAL MEETING; Nov 16, 1969 - Nov 20, 1969; LOS ANGELES, CA
    Format: text
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    NASA TECHNICAL REPORTS
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