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Thermal effects in compressible viscous flow in a capillary (1993)

Berg, H. R. ; Seldam, C. A. ; Gulik, P. S.

Springer

International journal of thermophysics 14 (1993), S. 865-892

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ISSN: 1572-9567

Keywords: capillary flow ; compressible flow ; entry length ; expansion cooling ; temperature field ; viscous dissipation

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract The thermal effects for a compressible viscous flow in a capillary have been calculated by solving the equation of energy, where a parabolic profile is assumed for the axial flow velocity. It is shown that, in general, the temperature changes are small (a few millikelvins), consistent with the current assumption of an isothermal flow, except in the case of a critical, i.e., very compressible, fluid where the cooling can be substantial. This effect is demonstrated numerically on the basis of a flow of ethylene in nearly critical circumstances.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00502113

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