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Numerical modelling of the rotating detonation combustion chamber

Karol Świderski

Abstract

It is well known that theoretical cycle of an engine with detonative combustion is thermodynamically more efficient that constant pressure combustion or constant volume combustion. Application of the detonative combustion allows increasing the total parameters of combustion products (temperature and pressure), therefore the gas can be expanded more efficiently in a turbine or nozzle. This promises improvements of performances of such engine. One of the phenomenon which can be used for building a detonative propulsion is the continuous rotating detonation wave. The idea of the Rotating Detonation Engine (RDE) consists in replacing a traditional deflagrative combustion chamber by an annular detonation chamber. The development of such type of engine is based on good understanding of the physics of the rotating detonation wave. The experimental works have already shown that many modes of propagation are possible: single detonation front, mutli-front detonation, counter-rotating and other. The simulations are based on inviscid or viscous multicomponent semi-ideal gas flow with chemical reactions. Due to high computational costs only simple chemical reaction mechanisms are used here. The obtained numerical results also showed that many regimes of detonation are present. This work is focused on investigation of influence of a geometry and flow conditions on the structure and propagation stability of the rotating detonation wave. The results presented in this thesis are also a part of the project UDA-POIG.01.03.01-14-071 ‘Turbine engine with detonative combustion chamber’ supported by EU and Ministry of Regional Development, Poland.
Record ID
WUT2939324eed8f4ccca28bc0e4e94e9258
Diploma type
Doctor of Philosophy
Author
Karol Świderski Karol Świderski,, Faculty of Power and Aeronautical Engineering (FPAE)
Title in Polish
Modelowanie numeryczne komory spalania silnika z wirującą detonacją
Title in English
Numerical modelling of the rotating detonation combustion chamber
Language
(en) English
Certifying Unit
Faculty of Power and Aeronautical Engineering (FPAE)
Discipline
mechanical engineering / (technology domain) / (technological sciences)
Status
Finished
Defense Date
04-02-2014
Title date
25-02-2014
Supervisor
Internal reviewers
External reviewers
Ryszard Białecki Ryszard Białecki,, External affiliation of publication: Silesian University of Technology
Pages
153
Keywords in English
xxx
Abstract in English
It is well known that theoretical cycle of an engine with detonative combustion is thermodynamically more efficient that constant pressure combustion or constant volume combustion. Application of the detonative combustion allows increasing the total parameters of combustion products (temperature and pressure), therefore the gas can be expanded more efficiently in a turbine or nozzle. This promises improvements of performances of such engine. One of the phenomenon which can be used for building a detonative propulsion is the continuous rotating detonation wave. The idea of the Rotating Detonation Engine (RDE) consists in replacing a traditional deflagrative combustion chamber by an annular detonation chamber. The development of such type of engine is based on good understanding of the physics of the rotating detonation wave. The experimental works have already shown that many modes of propagation are possible: single detonation front, mutli-front detonation, counter-rotating and other. The simulations are based on inviscid or viscous multicomponent semi-ideal gas flow with chemical reactions. Due to high computational costs only simple chemical reaction mechanisms are used here. The obtained numerical results also showed that many regimes of detonation are present. This work is focused on investigation of influence of a geometry and flow conditions on the structure and propagation stability of the rotating detonation wave. The results presented in this thesis are also a part of the project UDA-POIG.01.03.01-14-071 ‘Turbine engine with detonative combustion chamber’ supported by EU and Ministry of Regional Development, Poland.
Thesis file
• File: 1
Swiderski.pdf
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Uniform Resource Identifier
https://repo.pw.edu.pl/info/phd/WUT2939324eed8f4ccca28bc0e4e94e9258/
URN
urn:pw-repo:WUT2939324eed8f4ccca28bc0e4e94e9258

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