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  • 1
    Electronic Resource
    Electronic Resource
    A boundary integral approach for determining the pressure error (1980)
    Springer
    Rheologica acta 19 (1980), S. 12-18 
    Details
    ISSN: 1435-1528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Zusammenfassung Es wird die geradlinige Strömung einer Flüssigkeit zweiter Ordnung zwischen zwei unendlich ausgedehnten parallelen Platten betrachtet. Die Bodenplatte ruht und ist mit einer rechteckigen Nute der Tiefed und der BreiteW versehen, wohingegen die flache Deckplatte mit konstanter Geschwindigkeit in Strömungsrichtung bewegt wird. Eine Integralgleichungsmethode (boundary integral equation technique) wird entwickelt zur Bestimmung des durch die Nute in einer derartigen Strömung hervorgerufenen Druck-Fehlers (pressure error). Es wird gefunden, daß die auf diese Weise erhaltenen numerischen Ergebnisse gut mit den für einen Spezialfall vonKearsley berechneten exakten Lösungen übereinstimmen. Gleichfalls liegen die Ergebnisse innerhalb der vonRajagopal undHuilgol für solche Strömungen auf analytische Weise erhaltenen Grenzkurven.
    Notes: Summary The rectilinear flow of a second-order fluid is considered between two infinitely wide and long parallel plates. The bottom plate is at rest and has a slot of depth ‘d’ and width ‘W’ while the top plate is flat and moves along the flow direction with constant speed. A boundary integral equation technique is developed to determine the pressure error due to such a flow. We find that our numerical results compare favorably with the exact solutions obtained byKearsley for a special case. Also our results lie within the analytical bounds established byRajagopal andHuilgol for the pressure error for such flows.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01523850
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  • 2
    Electronic Resource
    Electronic Resource
    On the conditional stability of the rest state of a fluid of second grade in unbounded domains (1990)
    Springer
    Archive for rational mechanics and analysis 109 (1990), S. 173-182 
    Details
    ISSN: 1432-0673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00405241
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Swirling flow between rotating plates (1984)
    Springer
    Archive for rational mechanics and analysis 86 (1984), S. 305-315 
    Details
    ISSN: 1432-0673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00280030
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    On the nonlinear stability of flow of a conducting fluid past a porous flat plate in a transverse magnetic field (1983)
    Springer
    Archive for rational mechanics and analysis 83 (1983), S. 91-98 
    Details
    ISSN: 1432-0673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00281088
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    On the flow of a simple fluid in an orthogonal rheometer (1982)
    Springer
    Archive for rational mechanics and analysis 79 (1982), S. 39-47 
    Details
    ISSN: 1432-0673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02416565
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    On the existence of a manifold for temperature (1983)
    Springer
    Archive for rational mechanics and analysis 81 (1983), S. 317-332 
    Details
    ISSN: 1432-0673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00250858
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    On the decay of vortices in a second grade fluid (1980)
    Springer
    Meccanica 15 (1980), S. 185-186 
    Details
    ISSN: 1572-9648
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02128929
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  • 8
    Electronic Resource
    Electronic Resource
    An exact solution for the flow of a non-newtonian fluid past an infinite porous plate (1984)
    Springer
    Meccanica 19 (1984), S. 158-160 
    Details
    ISSN: 1572-9648
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Summary The flow of an incompressible fluid of second grade past an infinite porous plate subject to either suction or blowing at the plate is studied. It is found that existence of solutions is tied in with the sign of material moduli and in marked contrast to the Classical Newtonian, fluid solutions can be exhibited for the blowing problem.
    Notes: Sommario Si studia la corrente di un fluido incomprimibile di secondo grado che lambisce una lastra porosa da cui è succhiato o soffiato. Si trova che l'esistenza delle soluzioni è legata al segno dei moduli del materiale e, in netto contrasto col fluido newtoniano classico, si possono trovare soluzioni per il problema del soffiamento.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01560464
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    On flows of granular materials (1994)
    Springer
    Continuum mechanics and thermodynamics 6 (1994), S. 81-139 
    Details
    ISSN: 1432-0959
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This article reviews the behavior of materials made up of a large assemblage of solid particles under rapid and quasi static deformations. The focus is on flows at relatively high concentrations and for conditions when the interstitial fluid plays an insignificant role. The momentum and energy exchange processes are then primarily governed by interparticle collisions and Coulomb-type frictional contact. We first discuss some physical behavior —dilatancy, internal friction, fluidization and particle segregation — that are typical to the understanding of granular flows. Bagnold's seminal Couette flow experiments and his simple stress analysis are then used to motivate the first constitutive theories that use a microstructural variable — the fluctuation energy or granular temperature — governing the subscale fluctuating motion. The kinetic theories formalize the derivation of the field equations of bulk mass, momentum and energy, and permit derivation of constitutive relations for stress, flux of fluctuation energy and its dissipation rate for simple particle assemblages and when frictional rubbing contact can be ignored. These statistical considerations also show that formulation of boundary conditions needs special attention. The frictional-collisional constitutive behavior in which both Coulomb-type rubbing contact and collisional encounters are significant are discussed. There is as yet no rigorous formulation. We finally present a phenomenological approach that describes rapid flows of granular materials under simultaneous transport of heat and close with a summary of stability analyses of the basic flow down an inclined plane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01140894
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  • 10
    Electronic Resource
    Electronic Resource
    Flow of viscoelastic fluids between rotating disks (1992)
    Springer
    Theoretical and computational fluid dynamics 3 (1992), S. 185-206 
    Details
    ISSN: 1432-2250
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Few boundary-value problems in fluid mechanics can match the attention that has been accorded to the flow of fluids, Newtonian and non-Newtonian, between parallel rotating disks rotating about a common axis or about distinct axes. An interesting feature which has been recently observed is the existence of solutions that are not axially symmetric even in the case of flow due to the rotation of disks about a common axis. In this article we review the recent efforts that have been expended in the study of both symmetric and asymmetric solutions in the case of both the classical linearly viscous fluid and viscoelastic fluids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00417912
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    Paper (German National Licenses)
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