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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

The Characterization and Feasibility of a Low-Duty-Cycle Diaphragmless Shock Tube

Taylor, David Christopher 2012 August 1900 (has links)
The feasibility and characterization of a novel diaphragmless shock tube was examined at the National Aerothermochemistry Laboratory at Texas A&M University. The goal was to design a facility that reliably produces shock waves through air in a repeatable manner sufficient for statistical analysis. The device is modular, automated, and compact. The proposed diaphragmless shock tube uses a shock wave generating mechanism that consists of a rotating door and locking cam-shaft system. The facility produced the desired driver gas pressures repeatedly to within 0.31% at low-duty-cycle of 6 seconds. The driven gas pressure profiles within the test-section suggest that shock waves may be forming within test section for a driver gas pressure of 200 psig and above, which corresponds to shock wave Mach numbers of 1.7 to 2.0. The measured wave speeds were within 3.1% of that predicted by ideal shock tube theory; however, the induced driven gas pressures within the constant pressure region were approximately half that expedited from ideal shock tube theory.

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