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  • 1
    Electronic Resource
    Electronic Resource
    Transient compressible boundary layer on a wedge impulsively set into motion (1996)
    Springer
    Archive of applied mechanics 66 (1996), S. 336-342 
    Details
    ISSN: 1432-0681
    Keywords: boundary layer ; semi-similarity ; singular parabolicity ; finite difference ; upwind scheme
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary The development of a compressible boundary layer over a wedge impulsively set into motion is studied in this paper. The initial motion is independent of the leading edge effect and the solutions are those of a Rayleigh-type problem. The motion tends to an ultimate steady state of Falkner-Skan type. The equations governing the transient boundary layer from the initial steady state to the terminal steady-state change their character after certain time due to the leading edge effect and thereafter solution depends on both the end conditions. Numerical solutions are obtained through the second-order accuracy upwind scheme. The effects of the Falkner-Skan parameter and the surface temperature on the transient flow and heat transfer are also studied. It has been found that the flow separation does not occur form≧−0.0707 when θ w = 1.5 (hot wall), andm≧−0.118 when θ 0.5 (cold wall).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00795250
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  • 2
    Electronic Resource
    Electronic Resource
    Combined effects of rotation and translation on a MHD flow due to compressible viscous fluid (1996)
    Springer
    Archive of applied mechanics 67 (1996), S. 62-67 
    Details
    ISSN: 1432-0681
    Keywords: magnetohydrodynamics ; viscous flows ; heat transfer ; boundary layer ; numerical solution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary The modification of an axi-symmetric viscous flow due to a relative rotation of a disk or fluid by a translation of the boundary are studied. The fluid is taken to be compressible and electrically conducting. The equations governing the motion are solved iteratively through a central-difference scheme. The effect of an axial magnetic field and disk temperature on the flow and heat transfer are included in the present analysis. The translation of the disk or fluid generates a velocity field at each plane parallel to the disk (secondary flow). The cartesian components of the velocity due to the secondary flow are oscillatory in nature when a rigid body rotation of the free stream along with a translation of the disk is considered. The magnetic field damps out the velocity field, and reduces the thickness of the boundary layer. The cross component of wall shear due to secondary flow acts in a direction opposite to the rotation of the disk or fluid for all cases of the motion. The rise in disk temperature produces an increment in the magnitude of the wall shear associated with the secondary flow.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00787140
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  • 3
    Electronic Resource
    Electronic Resource
    Unsteady compressible flow due to relative rotation and translation of a viscous fluid on a disk (1996)
    Springer
    Archive of applied mechanics 66 (1996), S. 208-214 
    Details
    ISSN: 1432-0681
    Keywords: compressible flow ; asymmetric flow ; boundary layer ; finite difference ; skin friction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary The modification of the axisymmetric viscous flow due to relative rotation of the disk or fluid by a translation of the boundary is studied. The fluid is taken to be compressible, and the relative rotation and translation velocity of the disk or fluid are time-dependent. The nonlinear partial differential equations governing the motion are solved numerically using an implicit finite difference scheme and Newton's linearisation technique. Numerical solutions are obtained at various non-dimensional times and disk temperatures. The non-symmetric part of the flow (secondary flow) describing the translation effect generates a velocity field at each plane parallel to the disk. The cartesian components of velocity due to secondary flow exhibit oscillations when the motion is due to rotation of the fluid on a translating disk. Increase in translation velocity produces an increment in the radial skin friction but reduces the tangential skin friction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00795222
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  • 4
    Electronic Resource
    Electronic Resource
    Unsteady compressible flow due to relative rotation and translation of a viscous fluid on a disk (1996)
    Springer
    Archive of applied mechanics 66 (1996), S. 208-214 
    Details
    ISSN: 1432-0681
    Keywords:  compressible flow ; asymmetric flow ; boundary layer ; finite difference ; skin friction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary  The modification of the axisymmetric viscous flow due to relative rotation of the disk or fluid by a translation of the boundary is studied. The fluid is taken to be compressible, and the relative rotation and translation velocity of the disk or fluid are time-dependent. The nonlinear partial differential equations governing the motion are solved numerically using an implicit finite difference scheme and Newton’s linearisation technique. Numerical solutions are obtained at various non-dimensional times and disk temperatures. The non-symmetric part of the flow (secondary flow) describing the translation effect generates a velocity field at each plane parallel to the disk. The cartesian components of velocity due to secondary flow exhibit oscillations when the motion is due to rotation of the fluid on a translating disk. Increase in translation velocity produces an increment in the radial skin friction but reduces the tangential skin friction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00795222
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Combined effects of rotation and translation on a MHD flow due to compressible viscous fluid (1996)
    Springer
    Archive of applied mechanics 67 (1996), S. 62-67 
    Details
    ISSN: 1432-0681
    Keywords: Key words magnetohydrodynamics ; viscous flows ; heat transfer ; boundary layer ; numerical solution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary The modification of an axi-symmetric viscous flow due to a relative rotation of a disk or fluid by a translation of the boundary are studied. The fluid is taken to be compressible and electrically conducting. The equations governing the motion are solved iteratively through a central-difference scheme. The effect of an axial magnetic field and disk temperature on the flow and heat transfer are included in the present analysis. The translation of the disk or fluid generates a velocity field at each plane parallel to the disk (secondary flow). The cartesian components of the velocity due to the secondary flow are oscillatory in nature when a rigid body rotation of the free stream along with a translation of the disk is considered. The magnetic field damps out the velocity field, and reduces the thickness of the boundary layer. The cross component of wall shear due to secondary flow acts in a direction opposite to the rotation of the disk or fluid for all cases of the motion. The rise in disk temperature produces an increment in the magnitude of the wall shear associated with the secondary flow.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004190050099
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