NDLI: Investigation of the flow-induced vibration in the e2 test facility

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Investigation of the flow-induced vibration in the e2 test facility

Content Provider	NASA Technical Reports Server (NTRS)
Author	Castillo, Luciano
Copyright Year	2001
Description	An investigation of flow induced vibration due to coupling between the fluid flow and the propellants lines (LOX and RP-1) was performed. Various flow rate conditions were studied to check whether flow induced vibration was possible due to vortex shedding in both valves and pipe lines. Resonances test was conducted for all segments of the LOX-feedline for the preburner under test. In addition, critical values of frequency and velocity are calculated using a mass damping model. A simple chart characterizing the relation between frequency and velocity is developed for each component; i.e. propellant lines, valves and flow meters. It was found that flow induced vibration occurs for various segments with flow rates of 113 1b/s, 275 lb/s and 40 lb/s. Even more interesting using critical conditions for buckling, it was found that the valve or pipe may collapse for a flow rate of 275 lb/s and valve height of 10% of pipe diameter. Furthermore, two models for the acoustic pressure acting on the segments particularly for the valve are proposed.
File Size	1261212
Page Count	16
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20040081025
Archival Resource Key	ark:/13960/t8sb91n79
Language	English
Publisher Date	2001-08-17
Access Restriction	Open
Subject Keyword	Fluid Mechanics And Thermodynamics Test Facilities Vortex Shedding Fluid Flow Fuel Valves Equations of Motion Rp-1 Rocket Propellants Propellants Preburners Liquid Oxygen Feed Systems Flowmeters Flow Velocity Mathematical Models Vibration Tests Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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