Accession Number : AD0763427

Title :   Capillary Flow through Partially Saturated Fibrous Wicks.

Descriptive Note : Final rept.,

Corporate Author : TRW SYSTEMS GROUP REDONDO BEACH CALIF

Personal Author(s) : Eninger,James E. ; Marcus,Bruce D.

Report Date : 15 JUN 1973

Pagination or Media Count : 42

Abstract : Heat pipes are devices capable of transferring heat at a high rate between a thermal source and sink having only a small temperature difference between them. The crucial element of a heat pipe is the wick, through which condensed liquid from the cooler region returns to the hotter region under the action of capillary pressure. The purpose of the present work is to study, both theoretically and experimentally, flow through highly porous fibrous material, which is often used for heat-pipe wicks. Of particular concern is operation of wicks near their capillary limit where they are only partially saturated.

Descriptors :   (*FIBERS, *FLUID FLOW), (*HEAT TRANSFER, CAPILLARY TUBES), PERFORMANCE(ENGINEERING), PIPES, POROUS MATERIALS, SURFACE PROPERTIES, MATHEMATICAL MODELS, STRESSES, EQUATIONS OF MOTION

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE