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Development of Erosive Burning Models for CFD Predictions of Solid Rocket Motor Internal EnvironmentsFour erosive burning models, equations (11) to (14). are developed in this work by using a power law relationship to correlate (1) the erosive burning ratio and the local velocity gradient at propellant surfaces; (2) the erosive burning ratio and the velocity gradient divided by centerline velocity; (3) the erosive burning difference and the local velocity gradient at propellant surfaces; and (4) the erosive burning difference and the velocity gradient divided by centerline velocity. These models depend on the local velocity gradient at the propellant surface (or the velocity gradient divided by centerline velocity) only and, unlike other empirical models, are independent of the motor size. It was argued that, since the erosive burning is a local phenomenon occurring near the surface of the solid propellant, the erosive burning ratio should be independent of the bore diameter if it is correlated with some local flow parameters such as the velocity gradient at the propellant surface. This seems to be true considering the good results obtained by applying these models, which are developed from the small size 5 inch CP tandem motor testing, to CFD simulations of much bigger motors.
Document ID
20030066237
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Wang, Qun-Zhen (ATK-Thiokol Propulsion Brigham City, UT, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2003
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
AIAA Paper 2003-4809
Meeting Information
Meeting: 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
Location: Huntsville, AL
Country: United States
Start Date: July 20, 2003
End Date: July 23, 2003
Sponsors: Society of Automotive Engineers, Inc., American Society for Electrical Engineers, American Inst. of Aeronautics and Astronautics, American Society of Mechanical Engineers
Funding Number(s)
CONTRACT_GRANT: NAS8-97238
Distribution Limits
Public
Copyright
Public Use Permitted.

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