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Counterflow at intermediate velocities — He II inertia effects in short narrow ducts

✍ Scribed by T.H.K. Frederking; T.K. Lesniewski; S.W.K. Yuan

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 146 KB
Volume: 194-196
Category: Article
ISSN: 0921-4526
DOI: 10.1016/0921-4526(94)90609-2

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✦ Synopsis

II INERTIA EFFECTS IN

We are investigating the appearance of inertia influences during counterflow of He II in fine ducts of short length. The velocity range is above the London-Zilsel-Darcy normal fluid flow and below fully established mutual friction turbulence. In contrast to fully turbulent flow scenarios, covered by an extended set of non-linear equations, boundary domain evolution details ought to show up in a restricted range of variables. We consider the conservation equations of Fiszdon et al. invoking dimensional arguments for modeling. At present, only a few data sets are available suggesting qualitative support for the present boundary domain model.

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✍ T.K. Lesniewski; T.H.K. Frederking; S.W.K. Yuan 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 514 KB

The possibility of a He II counterflow laminar boundary layer in short narrow ducts with adiabatic lateral walls is considered. There is substantial support for laminar boundary layer-mediated counterflow transport at zero net mass flow in porous media.