A new shock tube facility for the study of heterogeneous combustion phenomena

Keywords

Combustion; Shock tubes -- Design and construction; Shock waves

Abstract

A new shock tube facility has been designed and built in the Mechanical, Materials & Aerospace Engineering department at The University of Central Florida. This 18-feet long shock tube is a gas driven, single-diaphragm design with a 3.5" square, aluminum driven section to allow the usage of flat windows for easy optical access and a 3" diameter stainless steel driver section. A special diaphragm cutter and holder assembly was constructed for clean rupture of the diaphragms. The instrumentation includes micro­ response piezoelectric pressure transducers, time-interval counters, a signal conditioning system, and a data acquisition system for shock speed detection and test pressure measurement. Lexan diaphragms are utilized, with a thickness ranging from 0.005" to 0.02". The new pressure driven shock tube was characterized over a wide range of reflected-shock temperatures (􀀇 900-4300 K) and pressures (0.9-8.4 atm) using Helium as the driver gas and Argon as the driven gas. The typical test times observed were in the range of 1.3-1.7 msec. The current application of the heterogeneous facility is the study of liquid-spray injection in the high-temperature environment behind the reflected shock wave, which is achieved by installing the fuel injector in the endwal1 of the shock tube. This thesis provides the basic theory of shock waves and design, construction details, and characterization of the shock tube facility, with compansons against ideal, one­ dimensional gas dynamic theory.

Notes

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Graduation Date

2003

Advisor

Petersen, Erin L.

Degree

Master of Science (M.S.)

College

College of Engineering

Department

Mechanical, Materials, and Aerospace Engineering

Format

PDF

Pages

78 p.

Language

English

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0029121

Subjects

Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic

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