Abstract

An experimentally obtained comparison between the breakup of water droplets in the flow field behind both a detonation wave and shock wave is considered. The experiments presented here were completed to support ongoing research efforts into droplet breakup mechanisms at different Mach and Weber numbers. The physical features of the droplets are observed using a high-speed camera and shadowgraph imagery. Droplets are roughly between 2-3 mm in diameter and are struck by detonation waves of Mach 5-6 and shock waves induced by deflagration combustion events of Mach 1-2. The Weber number of these experiments ranges from 5(10^3) to 90(10^3). These experiments were initiated in a detonation tube using four separate mixtures to allow for the creation of shock waves in the detonation tube, which consisted of hydrogen and oxygen or methane and oxygen at different equivalence ratios and once with the addition of nitrogen. Additionally, the breakup of these droplets is compared by non-dimensionalizing the displacement of fluid at the equator of the droplet, which is further compared to predictions made by the Taylor Analogy Breakup model. Attempts are made to determine the influence of factors other than Weber number on the deformation of a water droplet, while also considering the effects of Weber number.

Notes

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Graduation Date

2023

Semester

Summer

Advisor

Vasu Sumathi, Subith

Degree

Master of Science in Mechanical Engineering (M.S.M.E.)

College

College of Engineering and Computer Science

Department

Mechanical and Aerospace Engineering

Degree Program

Mechanical Engineering; Thermo-Fluids Track

Identifier

CFE0009877

Language

English

Release Date

February 2025

Length of Campus-only Access

1 year

Access Status

Masters Thesis (Campus-only Access)

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Restricted to the UCF community until February 2025; it will then be open access.

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