Accession Number : ADA260027


Title :   Design Manual for Two-Phase Components of Spacecraft Thermal Management Systems


Descriptive Note : Final rept. May 1990-Aug 1992


Corporate Author : CREARE INC HANOVER NH


Personal Author(s) : Crowley, Christopher J ; Izenson, Michael G ; Barry, James J ; Martin, Jerry L ; Ent, Rebecca S


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a260027.pdf


Report Date : Sep 1992


Pagination or Media Count : 320


Abstract : This design manual presents methods to design and model the performance of key two-phase components in thermal management systems for spacecraft. Components for both capillary- and mechanically-pumped loops are modelled including: forced-convection evaporators, droplet evaporators; two- phase transport lines, fittings, and tees; shear condensers; capillary condensers; and mechanical pumps. Heat pipe condensers are also included. The methods can be used for component design and sizing, analysis of component performance in system or component development tests, development and evaluation of analytical models for key phenomena, and integration with transient codes for system analysis. This manual describes in detail the analysis methods which have been used to produce software for component design. The software and methods are validated against experimental data whenever such data are available. When possible, simple design maps are presented for initial scoping calculations for sizing two-phase components. The basic analytical approach for these design methods is mechanistic, so that the mathematical models for component behavior are based upon the fundamental physics. Thus the methods include inherent scaling with gravity, physical size, and fluid properties. This approach allows the models to be easily upgraded as new experimental data become available and includes the ability to assess the analytical uncertainty in design calculations.


Descriptors :   *HEAT TRANSFER , *TWO PHASE FLOW , COMPUTER PROGRAMS , MATHEMATICAL MODELS , SPACE TECHNOLOGY , SPACECRAFT , MODELS , COMPUTERS , FORTRAN , SPACECRAFT COMPONENTS , LOOPS , MANUALS , HEAT PIPES , EVAPORATORS , NUCLEATE BOILING , CONDENSERS(LIQUEFIERS) , CALCULATORS , CAPILLARY TUBES


Subject Categories : Fluid Mechanics
      Thermodynamics


Distribution Statement : APPROVED FOR PUBLIC RELEASE