Turbulent transport of He II in active and passive phase separators using slit devices and porous mediaThe turbulent transport mode of vapor liquid phase separators (VLPS) for He II has been investigated comparing passive porous plug separators with active phase separators (APS) using slits of variable flow paths within a common frame of reference. It is concluded that the basic transport regimes in both devices are identical. An integrated Gorter-Mellink (1949) equation, found previously to predict VLPS results of porous plugs, is employed to analyze APS data published in the literature. It is found that the Gorter-Mellink flow rate parameter for 9-micron and 14-micron APS slit widths are relatively independent of the slit width, having a rate constant of about 9 + or - 10 percent. This agrees with the early heat flow results for He II entropy transport at zero net mass flow in wide capillaries and slits.
Document ID
19880065961
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Yuan, S. W. K. (Lockheed Missiles and Space Co., Inc. Research and Development Div., Palo Alto, CA, United States)
Lee, J. M. (NASA Ames Research Center Moffett Field, CA, United States)
Frederking, T. H. K. (California, University Los Angeles, United States)