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  • 1
    Electronic Resource
    Electronic Resource
    A simple triangular element for thick and thin plate and shell analysis (1994)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 37 (1994), S. 2569-2582 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: A new plate triangle based on Reissner-Mindlin plate theory is proposed. The element has a standard linear deflection field and an incompatible linear rotation field expressed in terms of the mid-side rotations. Locking is avoided by introducing an assumed linear shear strain field based on the tangential shear strains at the mid-sides. The element is free of spurious modes, satisfies the patch test and behaves correctly for thick and thin plate and shell situations. The element degenerates in an explicit manner to a simple discrete Kirchhoff form.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620371505
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Effect of hydroprocessing severity on characteristics of jet fuel from OSCO 2 and Paraho distillates (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Jet A boiling range fuels and broad-property research fuels were produced by hydroprocessing shale oil distillates, and their properties were measured to characterize the fuels. The distillates were the fraction of whole shale oil boiling below 343 C from TOSCO 2 and Paraho syncrudes. The TOSCO 2 was hydroprocessed at medium severity, and the Paraho was hydroprocessed at high, medium, and low severities. Fuels meeting Jet A requirements except for the freezing point were produced from the medium severity TOSCO 2 and the high severity Paraho. Target properties of a broad property research fuel were met by the medium severity TOSCO 2 and the high severity Paraho except for the freezing point and a high hydrogen content. Medium and low severity Paraho jet fuels did not meet thermal stability and freezing point requirements.
    Keywords: PROPELLANTS AND FUELS
    Type: NASA-TP-1768 , E-617
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Use of refinery computer model to predict fuel production (1979)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Several factors (crudes, refinery operation and specifications) that affect yields and properties of broad specification jet fuel were parameterized using the refinery simulation model which can simulate different types of refineries were used to make the calculations. Results obtained from the program are used to correlate yield as a function of final boiling point, hydrogen content and freezing point for jet fuels produced in two refinery configurations, each one processing a different crude mix. Refinery performances are also compared in terms of energy consumption.
    Keywords: PROPELLANTS AND FUELS
    Type: NASA-TM-79203 , E-088
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Literature survey of properties of synfuels derived from coal (1982)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A literature survey of the properties of synfuels for ground-based turbine applications is presented. The four major concepts for converting coal into liquid fuels (solvent extraction, catalytic liquefaction, pyrolysis, and indirect liquefaction), and the most important concepts for coal gasification (fixed bed, fluidized bed, entrained flow, and underground gasification) are described. Upgrading processes for coal derived liquid fuels are also described. Data presented for liquid fuels derived from various processes, including H-coal, synthoil, solvent refined coal, COED, donor solvent, zinc chloride hydrocracking, co-steam, and flash pyrolysis. Typical composition, and property data is also presented for low and medium-BTU gases derived from the various coal gasification processes.
    Keywords: PROPELLANTS AND FUELS
    Type: NASA-TM-82739 , E-1052 , DOE/NASA/10350-30 , NAS 1.15:82739 , ASTM Symp. on alternate fuels and future fuels specifications for stationary gas turbine applications; Dec 09, 1981 - Dec 10, 1981; Phoenix, AZ; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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