화성 임무 적용을 위한 Nerva 파생 원자로 냉각수 채널 모델
Edward W Porta, University of Nevada, Las Vegas
화성 미션 애플리케이션을 위한 NERVA 파생 원자로 냉각수 채널 모델은 1.3m NERVA 파생 원자로(NDR) 냉각수 채널의 전산유체역학(CFD) 연구 결과를 제시합니다. CFD 코드 FLOW-3D는 NDR 코어를 통과하는 기체 수소의 흐름을 모델링하는 데 사용되었습니다. 수소는 냉각제 채널을 통해 노심을 통과하여 원자로의 냉각제 및 로켓의 추진제 역할을 합니다. 수소는 고밀도/저온 상태로 채널에 들어가고 저밀도/고온 상태로 빠져나오므로 압축성 모델을 사용해야 합니다. 기술 문서의 설계 사양이 모델에 사용되었습니다. 채널 길이에 걸친 압력 강하가 이전에 추정한 것(0.9MPa)보다 높은 것으로 확인되었으며, 이는 더 강력한 냉각수 펌프가 필요하고 설계 사양을 재평가해야 함을 나타냅니다.
NERVA-Derived Reactor Coolant Channel Model for Mars Mission Applications presents the results of a computational fluid dynamics (CFD) study of a 1.3m NERVA-Derived Reactor (NDR) coolant channel; The CFD code FLOW-3D was used to model the flow of gaseous hydrogen through the core of a NDR. Hydrogen passes through the core by way of coolant channels, acting as the coolant for the reactor as well as the propellant for the rocket. Hydrogen enters the channel in a high density/low temperature state and exits in a low density/high temperature state necessitating the use of a compressible model. Design specifications from a technical paper were used for the model; It was determined that the pressure drop across the length of the channel was higher than previously estimated (0.9 MPa), indicating the possible need for more powerful coolant pumps and a re-evaluation of the design specifications.
Application; Channel; Coolant; Derived; Mars; Mission; Model; Nerva; Reactor
Anderson, J. D., Jr., (1990) Modern Compressible Flow, 2d ed., McGraw-Hill, New
Avallone E. A. and T. Baumeister III, eds., (1987) Mark’s Standard Handbookfor
Mechanical Engineers, 9th ed., McGraw-Hill, New York.
Bennett, G. L. and T. J. Miller (1992) “Nuclear Propulsion: A Key Transportation
Technology for the Exploration of Mars,” Proceedings o f the 9th Symposium on
Space Nuclear Power Systems, CONF-920104, M. S. El-Genk and M. D. Hoover,
eds., American Institute of Physics, New York, AIP Conference Proceedings No.
246, 2: 383-388.
Black, D. L., and S. V. Gunn (1991) “A Technical Summary of Engine and Reactor
Subsystem Design Performance during the NERVA Program,” AIAA-91-3450,
American Institute of Aeronautics and Astronautics, Washington, D. C.
Borowski, S. K., et al. (1992) “Nuclear Thermal Rockets: Key to Moon-Mars
Exploration,” Aerospace America, July 1992, pp. 34(5).
Borowski, S. K., et al. (1993) “ Nuclear Thermal Rocket/Vehicle Design Options for
Future NASA Missions to the Moon and Mars,” AIAA-93-4170, American Institute
of Aeronautics and Astronautics, Washington, D. C.
Borowski, S. K., et al. (1994) “Nuclear Thermal Rocket/Stage Technology Options for
NASA’s Future Human Exploration Missions to the Moon and Mars,” Proceedings
o f the 11th Symposium on Space Nuclear Power and Propulsion, CONF-940101, M.
S. El-Genk and M. D. Hoover, eds., American Institute of Physics, New York, NY,
AIP Conference Proceedings No. 301, 2: 745 – 758.
Burmeister, L. C. (1993) Convective Heat Transfer, 2d ed., John Wiley & Sons, New
Chi, J., R. Holman, and B. Pierce (1989) “Nerva Derivative Reactors for Thermal and
Electrical Propulsion,” AIAA-89-2770, American Institute of Aeronautics and
Astronautics, Washington, D. C.
FIDAP (1993) FIDAP 7.0 User’s Manual, Fluid Dynamics International, Inc.
FL0W-3D (1994) FL0W-3D Version 6.0 Quick Reference Guide, Flow Science, Inc.,
Los Alamos, NM.
Hill, P. G. and C. R. Peterson (1970) Mechanics and Thermodynamics o f Propulsion,
Addison-Wesley, Reading, MA.
Lamarsh, J. R. (1983) Introduction to Nuclear Engineering, 2d ed., Addison-Wesley,
Nassersharif, B. (1991) Notes from a Nuclear Propulsion Short Course, 3-5 January
1991, American Institute of Physics.
Nassersharif, B., E. Porta, and D. Hailes (1994) “A Proposal Entitled: Scenario Based
Design of Nuclear Propulsion for Manned Mars Mission,” NSCEE, Las Vegas, NV.
Shepard, K., et al. (1992) “A Split Sprint Mission to Mars,” Proceedings o f the 9th
Symposium on Space Nuclear Power Systems, CONF-920104, M. S. El-Genk and M.
D. Hoover, eds., American Institute of Physics, New York, AIP Conference
Proceedings No. 246, 1: 58 – 63.
Sutton, G. P. (1986) Rocket Propulsion Elements: An Introduction to the Engineering
o f Rockets, 5th ed., John Wiley & Sons, New York.
U.S. President (1989) “Remarks on the 20th Anniversary of the Apollo 11 Moon
Landing July 20, 1989,” Administration o f George Bush, Office of the Federal
Register. National Archives and Records Service, 1989, Washington D. C., George
Bush, 1989, p. 992.
VSAERO (1994) VSAERO User’s Manual E.5, Analytical Methods, Inc., Redmond,
White, F. M. (1991) Viscous Fluid Flow, 2d ed., McGraw-Hill, Inc., New York.
Zweig, H. R. and M. H. Cooper (1993) “NERVA-Derived Rocket Module for Solar
System Exploration,” AIAA-93-2110, American Institute of Aeronautics and
Astronautics, Washington, D. C.