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  • 1965-1969  (6)
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Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Effects of Drag-reducing Additives on Vortex Stretching (1968)
    [s.l.] : Nature Publishing Group
    Nature 217 (1968), S. 1040-1042 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This explanation seems improbable because results for two different tube sizes, one nearly twice the diameter of the other, correlate on the basis of Reynolds number. If shear thickening were involved, the apparent viscosity would be expected to be a function of shear stress, which must be greater ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2171040a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Turbulence Damping and Drag Reduction Produced by Certain Additives in Water (1965)
    [s.l.] : Nature Publishing Group
    Nature 206 (1965), S. 463-467 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT has been found1'2 that very small traces of certain long-chain-molecule contaminants added to water can greatly reduce turbulent friction acting on bodies moving through the fluid, or on surfaces past which the fluid flows. Reductions of as much as 40 per cent can be obtained by additions of as ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/206463a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Reduction of Turbulent Friction in Liquids by Dissolved Additives (1966)
    [s.l.] : Nature Publishing Group
    Nature 212 (1966), S. 874-877 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Traces of certain long-chain molecules added to fluids can greatly reduce turbulent friction on bodies moving through the fluid, or on surfaces past which it flows. Reductions of the friction by as much as 40 per cent can be achieved by as little as 10 parts per million by weight. The technique is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/212874a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Differences in Normal Stress in Aqueous Solutions of Turbulent Drag Reducing Additives (1966)
    [s.l.] : Nature Publishing Group
    Nature 212 (1966), S. 1348-1350 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. I. Concentric tube rheometer. Aqueous solutions of 40 p.p.m. polyethylene oxide (Union Carbide WSR 301), 72 p.p.m. polyacrylamide (Dow 'Separan AP 30') and 120 p.p.m. guar gum were tested under conditions of laminar flow in such a concentric tube instrument the principal dimensions of which ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2121348a0
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Effects of Long-chain Molecule Additives in Water on Vortex Streets (1966)
    [s.l.] : Nature Publishing Group
    Nature 211 (1966), S. 169-170 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] One of these constants in either model corresponds to the Newtonian viscosity as measured in conventional steady-flow viscometers. This must be equal to the viscosity of water for zero additive concentration, and in fact it varies comparatively little for concentrations of additive up to about 100 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/211169b0
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Aging and Degradation in Dilute Polymer Solutions (1967)
    [s.l.] : Nature Publishing Group
    Nature 215 (1967), S. 1368-1370 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The apparatus used was as in Fig. 1. Liquid in a header tank H could have an air pressure p, positive or negative relative to the atmosphere, applied to its upper surface. The liquid descended through a nozzle N and emerged through a smoothly rounded orifice 0, of 2*5 mm narrowest diameter, to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2151368a0
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    Paper (German National Licenses)
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