Table of Contents
Pulsed Detonation Engine Modeling
Introduction
Overview: Pulsed Detonation Engines
Two Modes of Combustion
Combustion Mechanisms
Combustion Mechanisms
Shock / Detonation Comparison
x-t Diagram for Shock
x-t Diagram of Detonation Formation
Detonation wave x-t
Detonation Characteristics
Detonation Basics
Pulsed Detonation Engine
PPT Slide
Full Detonation/Purge/Fill Cycle
Pressure along Detonation Tube
Analysis of PDE’s
Multiple Levels of Unsteady Analysis
Synergism of Three Model Levels
Zero-Dimensional Model
Zero-Dimensional Model
Zero-Dimensional Results
Zero - D Model PDE vs. Conventional Rocket
Specific Impulse --Zero Dimension Pi / Pc =1.0, Ti / Tc = 1.2
Specific Impulse --Zero Dimension Pi / Pc =8.0, Ti / Tc = 1.2
Conclusions from Zero - D Model
One - D Model
External Flow--Pressure Contours
One - D Model
PPT Slide
PPT Slide
Zero-D / One - D Comparisons
Two - D Model
Two - D Solutions
Impact of Downstream B.C.’s
Computational Domain Two-Dimensional Solutions
Movie Clips
Two-D Solutions
One-D Solutions--Two-D End Correction
Effect of Exit B.C. One-D Solution
Pressure-Time B.C. for 1-D Solutions
Exit Mach Number Comparison
Exit Mach Number Comparison
One-D Solutions--Two-D End Correction
Effects of Downstream B.C.s
Conclusions--1-D Solutions with 2-D B.C.’s
PPT Slide
Approximate Multi-Tube Analysis
PPT Slide
PPT Slide
PPT Slide
PPT Slide
Summary
Summary
Summary
PDE Research Issues
Conclusions from Zero - D Model
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