Some Issues Concerning Active Control of Combustion Instability in a Ramjet PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Some Issues Concerning Active Control of Combustion Instability in a Ramjet PDF full book. Access full book title Some Issues Concerning Active Control of Combustion Instability in a Ramjet by Suresh Menon. Download full books in PDF and EPUB format.
Author: Suresh Menon
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Suresh Menon
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 103
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 157
Get Book Here
Book Description
This study has developed a large-eddy simulation model for active control. The basic simulation control was extended for general applications, the simulation code was implemented on a massively parallel processor, and two active control techniques (acoustic feedback control and secondary fuel injection control) were investigated. However, the primary focus for active control in this study was on secondary fuel injection techniques, as it had been demonstrated in past experimental studies that this method was more practical. Numerical simulations of fuel injection control were carried out and, in addition, a theoretical model for secondary fuel injection control was developed along with a method to couple the theoretical model to the simulation model. Finally, to implement a robust controller, a fuzzy logic based controller for fuel injection was studied using a simplified problem geometry. To investigate the effects of three-dimensionality, full 3D LES of combustion instability was also carried out.
Author: S. Menon
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Suresh Menon
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 43
Get Book Here
Book Description
This report was developed under SBIR contract for topic AF00-204. This SBIR Phase I project incorporated experimental and modeling efforts to develop an advanced active control strategy and a robust instrumentation/actuation system for the suppression of combustion instability inside a scramjet during the initiation stage. The work carried out includes 1) development of micro-opto-mechanical (MOM) pressure sensors for the detection of instantaneous chamber pressure in a harsh environment, 2) development of aerated-liquid actuators capable of enhancing spray atomization and controlling droplet evaporation rate, 3) characterization of scramjet combustion instability, and 4) simulations of time-accurate combustion dynamics. It has been shown that the MOM pressure sensor exhibits a nearly linear response over pressure, with good sensitivity and dynamic response. The aerated-liquid actuator can achieve the desired mixing and, thus, heat release rate for the injected liquid as the liquid jet is aerated with a selected amount of gas. The low-frequency acoustic signatures inside a liquid-fueled scramjet combustor were shown to be manageable. Results from time-accurate calculations have closely mimicked the experimental conditions and operating procedure. This approach to the detection and control of combustion dynamics was proven to be feasible and can be applied to scramjets, as well as other liquid fueled propulsion systems.
Author: Dan Zhao
Publisher: Academic Press
ISBN: 0323899188
Category : Technology & Engineering
Languages : en
Pages : 1145
Get Book Here
Book Description
Thermoacoustic Combustion Instability Control: Engineering Applications and Computer Codes provides a unique opportunity for researchers, students and engineers to access recent developments from technical, theoretical and engineering perspectives. The book is a compendium of the most recent advances in theoretical and computational modeling and the thermoacoustic instability phenomena associated with multi-dimensional computing methods and recent developments in signal-processing techniques. These include, but are not restricted to a real-time observer, proper orthogonal decomposition (POD), dynamic mode decomposition, Galerkin expansion, empirical mode decomposition, the Lattice Boltzmann method, and associated numerical and analytical approaches. The fundamental physics of thermoacoustic instability occurs in both macro- and micro-scale combustors. Practical methods for alleviating common problems are presented in the book with an analytical approach to arm readers with the tools they need to apply in their own industrial or research setting. Readers will benefit from practicing the worked examples and the training provided on computer coding for combustion technology to achieve useful results and simulations that advance their knowledge and research. Focuses on applications of theoretical and numerical modes with computer codes relevant to combustion technology Includes the most recent modeling and analytical developments motivated by empirical experimental observations in a highly visual way Provides self-contained chapters that include a comprehensive, introductory section that ensures any readers new to this topic are equipped with required technical terms
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 500
Get Book Here
Book Description
Author: Shozo Koshigoe
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Rom Garreth McGuffin
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 390
Get Book Here
Book Description
