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PAPERBACK list:$48.75 Web:$43.88 add to cart Rights & Permissions Free PDF Access Free Resources Sign in to download PDF book and chapters PDF EXECUTIVE SUMMARY Display this book on your site! Related Titles Space Studies Board Annual Report 2003 The Hydrogen Economy: Opportunities, Costs, Barriers, and R&D Needs Other Related Titles Microgravity Research in Support of Technologies for the Human Exploration and Development of Space and Planetary Bodies (2000) Commission on Physical Sciences, Mathematics, and Applications (CPSMA) Space Studies Board (SSB) Web Search Builder Use this book's key terms to search within this book, across our collection, or across the Web. Skim This Chapter Skim this chapter and use this chapter's key terms to search within this book. Reference Finder Paste in your own text to find books that relate to your topic. Page 193   E-mail  Facebook  Digg  Stumble  Twitter More Page 193 Front Matter (R1-R18) Executive Summary (1-8) I Introduction (9-16) II Brief Descriptions of Phenomena Important in Reduced Gravity (17-20) III Survey of Technologies for the Human Exploration and Development of Space (21-110) IV Phenomena of Importance in Reduced Gravity (111-166) V Other Concerns (167-178) VI Summary of Recommended Research on Fundamental Phenomena (179-184) VII Programmatic Recommendations (185-188) Appendix A Statement of Task (189-192) Appendix B Symbols (193-194) Appendix C Glossary (195-198) Appendix D Acronyms (199-202) Appendix E Biographies of Committee Members (203-205)

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OCR for page 193
B Symbols p D DH Fr g go G J k-£ L n Heat capacity, or specific heat, J/kg-K Diffusion coefficient, m2/s Hydraulic diameter, m Froude number Acceleration due to gravity (not necessarily Earth's), m/s2 Gravity level at Earth's surface, m/s2 Artificial gravity level produced by rotation, m/s2 Inlet velocity, m/s Turbulent kinetic energy (k) and dissipation (£) Characteristic length scale or distance between boundaries, m Numerical exponent (greater than unity), dimensionless NSUB Nondimensional inlet subcooling p Pressure in fluid, N/m2 q max Critical heat flux, W/m2 Radial position, m Radius of pipe, m Saturation temperature, K Wall temperature R T sat or lw U W W X y Axial velocity fluctuation, m/s Lateral velocity fluctuation, m/s u'v' Reynolds stress (divided by density), m2/s2 Angular velocity of general rotation (e.g., of spacecraft about a distant axis), radians/s Flow rate, kg/s Axial dimension, m Radial distance (e.g., of spacecraft) from axis of general rotation, or lateral position, m Lateral dimension, m 193

OCR for page 194
194 ock £ V rl r p C, —£ CO APPENDIX B Volume fraction of phase k An overall difference of a property (e.g., /\p), measured or given at a certain position Amplitude of oscillation, m Friction number, fLIDH Kinematic viscosity of fluid, m2/s Single-phase pressure-drop-to-inlet-velocity ratio, N-s/m4 Two-phase pressure-drop-to-inlet-velocity ratio, N-s/m4 Mass density of fluid medium, kg/m3 Surface tension, N/m Reynolds stress (~) and turbulent dissipation (£) Angular velocity, radians/s

Representative terms from entire chapter:

reynolds stress