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  • Artikel: DFG Deutsche Nationallizenzen  (3)
  • Finite Element Method  (1)
  • Haemodynamic effects  (1)
  • constitutive equation  (1)
  • non-Newtonian liquid  (1)
Datenquelle
  • Artikel: DFG Deutsche Nationallizenzen  (3)
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  • 1
    Digitale Medien
    Digitale Medien
    A constitutive equation for a non-Newtonian liquid (1992)
    Springer
    Rheologica acta 31 (1992), S. 3-13 
    Details
    ISSN: 1435-1528
    Schlagwort(e): Liquid ; non-Newtonian liquid ; constitutive equation ; principal stretches
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Abstract The K-BKZ constitutive equation for non-Newtonian liquids usually uses as invariants the coefficients of the characteristic equation of a certain finite strain tensor. We show that the use of the roots of this equation, the squares of the principal stretches, is more efficient. We use a product of the linear relaxation spectrum and a simple sum of powers of the principal stretches as the “energy function” in the K-BKZ theory. The predictions of this theory agree with Meissner's data to a good approximation over many decades.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00396462
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 2
    Digitale Medien
    Digitale Medien
    Dynamic CT brain scanning in the haemodynamic evaluation of cerebral arterial occlusive disease (1987)
    Springer
    Neuroradiology 29 (1987), S. 259-265 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Dynamic cerebral CT scanning ; Arterial occlusive lesions ; Haemodynamic effects
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Dynamic cerebral CT scanning (DCT) was used to quantitatively analyse the haemodynamic effects of extracranial and intracranial arterial occlusive lesions in 17 patients with TIA's or minor cerebral infarcts. Using DCT and gamma variate curve fitting, mean transit times were determined for the terminal internal carotid arteries, middle cerebral arteries and middle cerebral-supplied Sylvian cortex at the level of the Circle of Willis. Six patients were studied sequentially, four before and after transcranial bypass surgery. No arterial or tissue delays were found in patients without haemodynamic arterial lesions or cortical infarcts. Seven of nine patients with haemodynamic, extracranial carotid lesions showed ipsilateral delays in arterial or tissue transit times. Tissue delays usually correlated with CT or clinical evidence of infarction. Improved haemodynamics in patients re-studied correlated with the effects of surgery or clinical recovery. DCT has several important limitations but has the potential to provide additional haemodynamic information about the cerebral circulation in selected patients with cerebral arterial occlusive disease.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00451764
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 3
    Digitale Medien
    Digitale Medien
    The free surface flow of Newtonian and non-Newtonian fluids trapped by surface tension (1988)
    Chichester : Wiley-Blackwell
    International Journal for Numerical Methods in Fluids 8 (1988), S. 1011-1027 
    Details
    ISSN: 0271-2091
    Schlagwort(e): Free Surface ; Finite Element Method ; Surface Tension ; Newtonian and Non-Newtonian Fluids ; Engineering ; Engineering General
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau
    Notizen: In this paper the position of the free surface of a swirling fluid held in by surface tension is calculated by the finite element method. A new locally mass-conserving quadratic velocity, linear pressure triangular element is used to overcome non-physical solutions produced by the well known Taylor-Hood element.
    Zusätzliches Material: 13 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/fld.1650080904
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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