users’ manual for computer code spirali...collection of information, including suggestions for...
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NASA/CR—2003-212359
October 2005
MTI 95TM5
Export Administration Regulations (EAR) Notice
This document contains information within the purview of the Export Administration Regulations (EAR), 15 CFR 730–774, and is export controlled. It may not be transferred to foreign nationals in the U.S. or abroad without specific approval of a knowledgeable NASA export control official, and/or unless an export license/license exception is obtained/available from the Bureau of Industry and Security, United States Department of Commerce. Violations of these regulations are punishable by fine, imprisonment, or both.
Restriction changed to Unclassified/Unlimited on July 27, 2005, by authority of the NASAGlenn Research Center, Structures Division.
Jed A. WalowitJed A. Walowit, Inc., Clifton Park, New York
Wilbur ShapiroMechanical Technology, Inc., Latham, New York
Users’ Manual for Computer Code SPIRALIIncompressible, Turbulent Spiral GroovedCylindrical and Face Seals
https://ntrs.nasa.gov/search.jsp?R=20050244830 2020-08-04T11:27:27+00:00Z
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The NASA STI Program Office . . . in Profile
Since its founding, NASA has been dedicated tothe advancement of aeronautics and spacescience. The NASA Scientific and TechnicalInformation (STI) Program Office plays a key partin helping NASA maintain this important role.
The NASA STI Program Office is operated byLangley Research Center, the Lead Center forNASA’s scientific and technical information. TheNASA STI Program Office provides access to theNASA STI Database, the largest collection ofaeronautical and space science STI in the world.The Program Office is also NASA’s institutionalmechanism for disseminating the results of itsresearch and development activities. These resultsare published by NASA in the NASA STI ReportSeries, which includes the following report types:
• TECHNICAL PUBLICATION. Reports ofcompleted research or a major significantphase of research that present the results ofNASA programs and include extensive dataor theoretical analysis. Includes compilationsof significant scientific and technical data andinformation deemed to be of continuingreference value. NASA’s counterpart of peer-reviewed formal professional papers buthas less stringent limitations on manuscriptlength and extent of graphic presentations.
• TECHNICAL MEMORANDUM. Scientificand technical findings that are preliminary orof specialized interest, e.g., quick releasereports, working papers, and bibliographiesthat contain minimal annotation. Does notcontain extensive analysis.
• CONTRACTOR REPORT. Scientific andtechnical findings by NASA-sponsoredcontractors and grantees.
• CONFERENCE PUBLICATION. Collectedpapers from scientific and technicalconferences, symposia, seminars, or othermeetings sponsored or cosponsored byNASA.
• SPECIAL PUBLICATION. Scientific,technical, or historical information fromNASA programs, projects, and missions,often concerned with subjects havingsubstantial public interest.
• TECHNICAL TRANSLATION. English-language translations of foreign scientificand technical material pertinent to NASA’smission.
Specialized services that complement the STIProgram Office’s diverse offerings includecreating custom thesauri, building customizeddatabases, organizing and publishing researchresults . . . even providing videos.
For more information about the NASA STIProgram Office, see the following:
• Access the NASA STI Program Home Pageat http://www.sti.nasa.gov
• E-mail your question via the Internet [email protected]
• Fax your question to the NASA AccessHelp Desk at 301–621–0134
• Telephone the NASA Access Help Desk at301–621–0390
• Write to: NASA Access Help Desk NASA Center for AeroSpace Information 7121 Standard Drive Hanover, MD 21076
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Jed A. WalowitJed A. Walowit, Inc., Clifton Park, New York
Wilbur ShapiroMechanical Technology Inc., Latham, New York
Users’ Manual for Computer Code SPIRALIIncompressible, Turbulent Spiral GroovedCylindrical and Face Seals
NASA/CR—2003-212359
October 2005
National Aeronautics andSpace Administration
Glenn Research Center
Prepared under Contract NAS3–25644
MTI 95TM5
Export Administration Regulations (EAR) Notice
This document contains information within the purview of the Export Administration Regulations (EAR), 15 CFR 730–774, and is export controlled. It may not be transferred to foreign nationals in the U.S. or abroad without specific approval of a knowledgeable NASA export control official, and/or unless an export license/license exception is obtained/available from the Bureau of Industry and Security, United States Department of Commerce. Violations of these regulations are punishable by fine, imprisonment, or both.
Restriction changed to Unclassified/Unlimited on July 27, 2005, by authority of the NASAGlenn Research Center, Structures Division.
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Available from
NASA Center for Aerospace Information7121 Standard DriveHanover, MD 21076
Trade names or manufacturers’ names are used in this report foridentification only. This usage does not constitute an officialendorsement, either expressed or implied, by the National
Aeronautics and Space Administration.
National Technical Information Service5285 Port Royal RoadSpringfield, VA 22100
Available electronically at http://gltrs.grc.nasa.gov
This work was sponsored by the Low Emissions AlternativePower Project of the Vehicle Systems Program at the
NASA Glenn Research Center.
Document History
The source and executable files for the CFD Seal Analysis Industrial Codes, of which this is a part,were released as LEW–16582 in 1998. This report was originally published
by Mechanical Technology, Inc., in March 1995.
Document Availability Change Notice
NASA/CR—2003-212359
Users’ Manual for Computer Code SPIRALIIncompressible, Turbulent Spiral Grooved
Cylindrical and Face Seals
Jed A. Walowit and Wilbur Shapiro
This document was published in July 2003 with the restriction Export Administration Regulations (EAR).It was changed to Unclassified/Unlimited July 27, 2005, by authority of the NASA Glenn Research Center,
Structures Division.
Per the STI Program Office and Code I at Headquarters, you may modify copies in your possession. The restrictionnotice on the cover, title page, and Report Documentation Page should be boldly crossed out and the above
statement printed clearly above or below it.
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This publication is available from the NASA Center for AeroSpace Information, 301–621–0390.
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Export Administration Regulations (EAR) NoticeThis document contains information within the purview of the Export Administration Regulations (EAR),15 CFR 730–774, and is export controlled. It may not be transferred to foreign nationals in the U.S. orabroad without specific approval of a knowledgeable NASA export control official, and/or unless an exportlicense/license exception is obtained/available from the Bureau of Industry and Security, United StatesDepartment of Commerce. Violations of these regulations are punishable by fine, imprisonment, or both.
Available electronically at http://gltrs.grc.nasa.gov
October 2005
NASA CR—2003-212359MTI 95TM5
E–13615
WU–506–42–31–00WU–590–21–11–00NAS3–25644
98
Jed A. Walowit and Wilbur Shapiro
Face seals; Seals; Cylindrical seals; Leakage; Incompressible; Spiral-grooved; Turbulent;Users' manual
Unclassified-UnlimitedSubject Category: 34
Mechanical Technology, Inc.968 Albany Shaker RoadLatham, New York 12110
Jed A. Walowit, Jed A. Walowit, Inc., 4 Cypress Point, Clifton Park, New York 12065; and Wilbur Shapiro, MechanicalTechnology, Inc., Latham, New York. Project Manager, Anita D. Liang, Aeropropulsion Projects Office, NASA GlennResearch Center, organization code P, 216–977–7439.
The SPIRALI code predicts the performance characteristics of incompressible cylindrical and face seals with or withoutthe inclusion of spiral grooves. Performance characteristics include load capacity (for face seals), leakage flow, powerrequirements and dynamic characteristics in the form of stiffness, damping and apparent mass coefficients in 4 degrees offreedom for cylindrical seals and 3 degrees of freedom for face seals. These performance characteristics are computed asfunctions of seal and groove geometry, load or film thickness, running and disturbance speeds, fluid viscosity, andboundary pressures. A derivation of the equations governing the performance of turbulent, incompressible, spiral groovecylindrical and face seals along with a description of their solution is given. The computer codes are described, includingan input description, sample cases, and comparisons with results of other codes.
Restriction changed to Unclassified/Unlimited on July 27, 2005, by authority of the NASA GlennResearch Center, Structures Division.
Users' Manual for Computer Code SPIRALIIncompressible, Turbulent Spiral Grooved Cylindrical and Face Seals
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