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  • 1
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    Design and Testing of a Cryogenic Capillary Pumped Loop Flight Experiment (1998)
    In:  CASI
    Details
    Publication Date: 2013-08-29
    Description: This paper details the flight configuration and pre-flight performance test results of the fifth generation cryogenic capillary pumped loop (CCPL-5). This device will fly on STS-95 in October 1998 as part of the CRYOTSU Flight Experiment. This flight represents the first in-space demonstration of a CCPL, a miniaturized two-phase fluid circulator for thermally linking cryogenic cooling sources to remote cryogenic components. CCPL-5 utilizes N2 as the working fluid and has a practical operating range of 75-110 K. Test results indicate that CCPL-5, which weighs about 200 grams, can transport over 10 W of cooling a distance of 0.25 m (or more) with less than a 5 K temperature drop.
    Keywords: Fluid Mechanics and Heat Transfer
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  • 2
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    Design and Testing of a Cryogenic Capillary Pumped Loop Flight Experiment (1998)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: This paper details the flight configuration and pre-flight performance test results of the fifth generation cryogenic capillary pumped loop (CCPL-5). This device will fly on STS-95 in October 1998 as part of the CRYOTSU Flight Experiment. This flight represents the first in-space demonstration of a CCPL; a miniaturized two-phase fluid circulator for thermally linking cryogenic components. CCPL-5 utilizes N2 as the working fluid and has a practical operating range of 75-110 K. Test results indicate that CCPL-5, which weighs about 200 grams, can transport over 10 W of cooling a distance of 0.25 m (or more) with less than a 5 K temperature drop.
    Keywords: Fluid Mechanics and Heat Transfer
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  • 3
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    Development status of SINDA/FLUINT and SINAPS (1992)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: SINDA/FLUINT (Systems Improved Numerical Differencing Analyzer/Fluid Integrator, formerly SINDA '85) is a computer code used to analyze thermal/fluid systems that can be represented in lumped parameter form. In addition to conduction and radiation heat transfer, the code is capable of modeling both single- and two-phase flow networks, their associated hardware, and their heat transfer processes. In this paper, recent improvements to SINDA/FLUINT are described, as are those in progress that will be available in the fall of 1992 in Version 2.5. Also, a preview of planned enhancements is provided. This paper also introduces SINAPS (SINDA Application Programming System), a powerful graphical pre- and postprocessor that will also be available in the fall of 1992.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: NASA. Lewis Research Center, The Fourth Annual Thermal and Fluids Analysis Workshop; p 95-107
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  • 4
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    Flight Testing of a Cryogenic Capillary Pumped Loop (1999)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: This paper describes the flight test results of the fifth generation cryogenic capillary pumped loop (CCPL-5) which flew on the Space Shuttle STS-95 in October of 1998 as part of the CRYOTSU Flight Experiment. This flight was the first in-space demonstration of the CCPL, a lightweight heat transport and thermal switching device for future integrated cryogenic bus systems. The CCPL-5 utilized nitrogen as the working fluid and operated between 80K and 110K. Flight results indicated excellent performance of the CCPL-5 under zero-G environment. The CCPL could start from a supercritical condition in all tests, and the loop operating temperature could be tightly controlled regardless of changes in the heat load and/or the sink temperature. In addition, the loop demonstrated successful operation with a heat load of 0.5 W as well as with parasitic heat loads alone.
    Keywords: Fluid Mechanics and Heat Transfer
    Type: IECEC-99-042 , Intersociety Energy Conversion Engineering; Aug 01, 1999 - Aug 05, 1999; Vancouver, British Columbia; Canada
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  • 5
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    Systems Improved Numerical Differencing Analyzer And Fluid Integrator (SINDA '85/FLUINT) (1991)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: General thermal analysis program handles both simple and extremely complex heat transfer problems, including those with both solid and fluid components. Available for DEC and Sun computers, program yields NASTRAN-compatible output.
    Keywords: MECHANICS
    Type: MSC-21528 , NASA Tech Briefs (ISSN 0145-319X); 15; 12; P. 58
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  • 6
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    SINDA '85/FLUINT, Version 2.2 (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: SINDA, Systems Improved Numerical Differencing Analyzer, software system developed for solving physical problems governed by diffusion-type equations modeled by lumped-parameter representations. Used as general thermal analyzer with resistor-and-capacitor-network representations, adapted to wide range of problems represented by such differential equations as Fourier, Poisson, or LaPlace. Software system updated. FLUINT, FLUid INTegrator, is advanced, one-dimensional fluid-analysis program solving equations of arbitrary fluid-flow networks. Written in FORTRAN and ASSEMBLER.
    Keywords: MECHANICS
    Type: MSC-21528 , NASA Tech Briefs (ISSN 0145-319X); 14; 9; P. 68
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  • 7
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    Program Computes Flows Of Fluids And Heat (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: SINDA'85/FLUINT incorporates lumped-parameter-network and one-dimensional-flow mathematical models. System enables analysis of mutual influences of thermal and flow phenomena. Offers two finite-difference numerical solution techniques: forward-difference explicit approximation and Crank-Nicholson approximation. Enables simulation of nonuniform heating and facilitates mathematical modeling of thin-walled heat exchangers. Ability to model nonequilibrium behavior within two-phase volumes included. Recent changes in program improve modeling of real evaporator pumps and other capillary-assist evaporators. Written in FORTRAN 77.
    Keywords: MECHANICS
    Type: MSC-21778 , NASA Tech Briefs (ISSN 0145-319X); 17; 2; P. 71
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  • 8
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    Systems Improved Numerical Differencing Analyzer And Fluid Integrator (SINDA '85/FLUINT) (1993)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Comprehensive thermal analysis system handles complex models such as evaporators and permits interaction of thermal and fluid problems. Design flexibility provided by 20,000 nodes, 100,000 conductors, 100 thermal submodels, and 10 fluid submodels.
    Keywords: MECHANICS
    Type: MSC-21528 , NASA Tech Briefs (ISSN 0145-319X); 17; 1; P. 69
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  • 9
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    Updated SINDA '85/FLUINT (1992)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: SINDA '85/FLUINT system enables analysis of mutual influences of thermal and fluid aspects of physical systems. Program enables simulation of nonuniform heating and facilitates mathematical modeling of thin-walled heat exchangers. Written in FORTRAN.
    Keywords: MACHINERY
    Type: MSC-21774 , NASA Tech Briefs (ISSN 0145-319X); 16; 3; P. 68
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  • 10
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    Algorithm for Fluid Networks (1987)
    In:  Other Sources
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    Publication Date: 2019-07-12
    Description: Algorithm performs either transient integration or steady-state relaxation of network that represents internal fluid system. Valid for both single and two-phase flow of any fluid and includes both heat-transfer and work terms. General enough to simulate almost any flow system to almost any degree of detail desired. Encoded into computer program FLUINT, will work in conjunction with SINDA-85 program to enable analysis of pipelines; heating, ventilating, and cooling systems; and almost any other system that involves both fluid flow and heat transfer. Other possible extensions includes effects of flexibilities of containers, high-velocity flow, gravitation, acceleration, and opening and closing valves.
    Keywords: MATHEMATICS AND INFORMATION SCIENCES
    Type: MSC-21250 , NASA Tech Briefs (ISSN 0145-319X); 11; 6; P. 76
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