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Theory of instability and nonlinear ...

Kasimov, Aslan R.

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Theory of instability and nonlinear evolution of self-sustained detonation waves.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Theory of instability and nonlinear evolution of self-sustained detonation waves./
Author:	Kasimov, Aslan R.
Description:	213 p.
Notes:	Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 1944.
Contained By:	Dissertation Abstracts International65-04B.
Subject:	Applied Mechanics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3130948
ISBN:	0496781960

Theory of instability and nonlinear evolution of self-sustained detonation waves.
Kasimov, Aslan R.

Theory of instability and nonlinear evolution of self-sustained detonation waves. - 213 p.

Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 1944.

Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2004.

Linear stability properties and nonlinear dynamics of self-sustained detonations is investigated by means of asymptotic analysis and numerical simulations. The normal-mode linear stability analysis is carried out for gaseous detonations propagating in cylindrical tubes. By comparison of the stability predictions with experiments, it is shown that the instability plays a fundamental role in the onset of spin detonation. We derive far-field closure conditions for unsteady and multi-dimensional detonation waves in arbitrary explosive media as intrinsic properties of the reactive Euler equations in the embedded sonic surface, which is a characteristic surface. The conditions generalize previously known sonic conditions for self-sustained detonations. We investigate the nature of the sonic conditions numerically with a new numerical technique for solving the Euler equations and demonstrate that the sonic locus is a characteristic surface and an information boundary that isolates the reaction zone from the far-field flow. Starting with the general formulation, we derive an asymptotic evolution equation for self-sustained detonations in the limits of slow-time variation and weak curvature and find that the equation predicts ignition and failure of detonations. Based on the evolution equation, we formulate a theory of direct initiation of gaseous detonation that can predict critical conditions from first principles. The ignition theory is also extended to explosives with arbitrary equation of state. With the general conditions at the sonic locus available, we formulate the stability problem for high-explosive detonations described by non-ideal equation of state and calculate stability characteristics of detonation in PBX-9502 and nitromethane.

ISBN: 0496781960Subjects--Topical Terms:

1018410
Applied Mechanics.

Theory of instability and nonlinear evolution of self-sustained detonation waves.
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100 1 $a Kasimov, Aslan R. $3 1936727
245 1 0 $a Theory of instability and nonlinear evolution of self-sustained detonation waves.
300 $a 213 p.
500 $a Source: Dissertation Abstracts International, Volume: 65-04, Section: B, page: 1944.
500 $a Adviser: D. Scott Stewart.
502 $a Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2004.
520 $a Linear stability properties and nonlinear dynamics of self-sustained detonations is investigated by means of asymptotic analysis and numerical simulations. The normal-mode linear stability analysis is carried out for gaseous detonations propagating in cylindrical tubes. By comparison of the stability predictions with experiments, it is shown that the instability plays a fundamental role in the onset of spin detonation. We derive far-field closure conditions for unsteady and multi-dimensional detonation waves in arbitrary explosive media as intrinsic properties of the reactive Euler equations in the embedded sonic surface, which is a characteristic surface. The conditions generalize previously known sonic conditions for self-sustained detonations. We investigate the nature of the sonic conditions numerically with a new numerical technique for solving the Euler equations and demonstrate that the sonic locus is a characteristic surface and an information boundary that isolates the reaction zone from the far-field flow. Starting with the general formulation, we derive an asymptotic evolution equation for self-sustained detonations in the limits of slow-time variation and weak curvature and find that the equation predicts ignition and failure of detonations. Based on the evolution equation, we formulate a theory of direct initiation of gaseous detonation that can predict critical conditions from first principles. The ignition theory is also extended to explosives with arbitrary equation of state. With the general conditions at the sonic locus available, we formulate the stability problem for high-explosive detonations described by non-ideal equation of state and calculate stability characteristics of detonation in PBX-9502 and nitromethane.
590 $a School code: 0090.
650 4 $a Applied Mechanics. $3 1018410
650 4 $a Physics, Fluid and Plasma. $3 1018402
690 $a 0346
690 $a 0759
710 2 0 $a University of Illinois at Urbana-Champaign. $3 626646
773 0 $t Dissertation Abstracts International $g 65-04B.
790 1 0 $a Stewart, D. Scott, $e advisor
790 $a 0090
791 $a Ph.D.
792 $a 2004
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3130948