Numerical Simulation of Unsteady Flow Evolution and Flame Dynamics in a Solid Rocket Motor 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 Numerical Simulation of Unsteady Flow Evolution and Flame Dynamics in a Solid Rocket Motor PDF full book. Access full book title Numerical Simulation of Unsteady Flow Evolution and Flame Dynamics in a Solid Rocket Motor by Sourabh Apte. Download full books in PDF and EPUB format.
Author: Sourabh Apte
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Sourabh Apte
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Liu Weidong
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: T. M. Smith
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: P. Venugopal
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Gao Bo
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
Author: Brian Anthony McDonald
Publisher:
ISBN:
Category : Solid propellant rockets
Languages : en
Pages :
Get Book Here
Book Description
The development of an erosive burning model for solid rocket motors using direct numerical simulation Brian A. McDonald 93 Pages Directed by Dr. Suresh Menon. A method for developing an erosive burning model for use in solid propellant design-and-analysis interior ballistics codes is described and evaluated. Using Direct Numerical Simulation, the primary mechanisms controlling erosive burning (turbulent heat transfer, and finite rate reactions) have been studied independently through the development of models using finite rate chemistry, and infinite rate chemistry. Both approaches are calibrated to strand burn rate data by modeling the propellant burning in an environment with no cross-flow, and adjusting thermophysical properties until the predicted regression rate matches test data. Subsequent runs are conducted where the cross-flow is increased from M=0.0 up to M=0.8. The resulting relationship of burn rate increase versus Mach Number is used in an interior ballistics analysis to compute the chamber pressure of an existing solid rocket motor. The resulting predictions are compared to static test data. Both the infinite rate model and the finite rate model show good agreement when compared to test data. The propellant considered is an AP/HTPB with an average AP particle size of 37 microns. The finite rate model shows that as the cross-flow increases, near wall vorticity increases due to the lifting of the boundary caused by the side injection of gases from the burning propellant surface. The point of maximum vorticity corresponds to the outer edge of the APd-binder flame. As the cross-flow increases, the APd-binder flame thickness becomes thinner ; however, the point of highest reaction rate moves only slightly closer to the propellant surface. As such, the net increase of heat transfer to the propellant surface due to finite rate chemistry affects is small. This leads to the conclusion that augmentation of thermal transport properties and the resulting heat transfer increase due to turbulence dominates over combustion chemistry in the erosive burning problem. This conclusion is advantageous in the development of future models that can be calibrated to heat transfer conditions without the necessity for finite rate chemistry. These results are considered applicable for propellants with small, evenly distributed AP particles where the assumption of premixed APd-binder gases is reasonable.
Author: Andrew Pollard
Publisher: Springer
ISBN: 3319412175
Category : Technology & Engineering
Languages : en
Pages : 570
Get Book Here
Book Description
This volume provides a snapshot of the current and future trends in turbulence research across a range of disciplines. It provides an overview of the key challenges that face scientific and engineering communities in the context of huge databases of turbulence information currently being generated, yet poorly mined. These challenges include coherent structures and their control, wall turbulence and control, multi-scale turbulence, the impact of turbulence on energy generation and turbulence data manipulation strategies. The motivation for this volume is to assist the reader to make physical sense of these data deluges so as to inform both the research community as well as to advance practical outcomes from what is learned. Outcomes presented in this collection provide industry with information that impacts their activities, such as minimizing impact of wind farms, opportunities for understanding large scale wind events and large eddy simulation of the hydrodynamics of bays and lakes thereby increasing energy efficiencies, and minimizing emissions and noise from jet engines. Elucidates established, contemporary, and novel aspects of fluid turbulence - a ubiquitous yet poorly understood phenomena; Explores computer simulation of turbulence in the context of the emerging, unprecedented profusion of experimental data,which will need to be stewarded and archived; Examines a compendium of problems and issues that investigators can use to help formulate new promising research ideas; Makes the case for why funding agencies and scientists around the world need to lead a global effort to establish and steward large stores of turbulence data, rather than leaving them to individual researchers.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 45
Get Book Here
Book Description
A summary of research on our studies of acoustic-mean flow interactions in solid rocket motors is presented in this Final Technical Report. Two-dimensional, time-dependent solutions of the compressible Navier-Stokes equations have been obtained in a rectangular duct under conditions of monochromatic acoustic forcing. The existence of a cut-off frequency, the appearance of oblique waves, and the behavior at resonance compare well with previously published analytical predictions. The thickness of the acoustic boundary layer and its response to imposed disturbances are also in good agreement with theory. The code is being modified to include nonpremixed combustion, which will allow studying acoustic interactions with a chemically reactive mean flow. (MM).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 690
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 702
Get Book Here
Book Description
