Morphology of standing oblique detonation waves

Pratt, David T.; Humphrey, Joseph W.; Glenn, Dennis E.

doi:10.2514/3.23399

Cited by 197 publications

(61 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the literature this configuration is referred to as an oblique detonation wave (ODW). The configuration is a fundamental one that is fairly simple to simulate and is relevant to hypersonic air-breathing propulsion schemes [1,8]. Much of the published work considers premixed mixtures of hydrogen, oxygen, and diluent.…”

Section: A Nonlinear Stability Of Detonation Flows Over Wedges and Bmentioning

confidence: 99%

State of Detonation Stability Theory and Its Application to Propulsion

Stewart

Kasimov

2006

Journal of Propulsion and Power

View full text Add to dashboard Cite

We present an overview of the current state of detonation stability theory and discuss its implications for propulsion. The emphasis of the review is on the exact or asymptotic treatments of detonations, including various asymptotic limits that appear in the literature. The role that instability plays in practical detonation-based propulsion is of primary importance and is largely unexplored, hence we point to possible areas of research both theoretical and numerical, that might help improve our understanding of detonation behavior in propulsion devices. We outline the basic formulation of detonation stability theory that starts from linearized Euler equations, describe the algorithm of solution, and present an example that illustrates typical results.shock velocity vector E = activation energy e = internal energy per unit mass including chemical energy f = degree of overdrive H = enthalpy flux across the shock k = transverse wave number k ! = reaction rate constant M = local Mach number relative to the shock M = mass flux across the shock n = shock-attached frame axial coordinate n = unit normal to the shock P = momentum flux across the shock p = pressure Q = heat release per unit mass q = state vector t = unit tangent vector to the shock U = x component of particle velocity in steady shock frame U 1 = x component of particle velocity in unsteady shock frame u = particle velocity vector in laboratory frame u 1 = x component of particle velocity in laboratory frame u 2 = y component of particle velocity v = specific volume x = laboratory frame axial coordinate y = transverse coordinate = perturbation growth rate = ratio of specific heats = reaction progress variable = density = thermicity = shock displacement from the steady position along x axis ! = reaction rate University. He has published extensively in the areas of combustion theory, asymptotic analysis, theory for multidimensional detonation, detonation stability, continuum mechanics of multiphase flows, phase transformations, modeling of energetic materials, solid rocket motor combustion, advanced level set methods, and computational modeling of reactive flow. He is a past associate editor for SIAM Journal of Applied Mathematics, and was a founding (and still serves as a) board member for Combustion Theory and Modelling. In 1987 he was a founder of the SIAM Conferences on Numerical Combustion that are still held worldwide. He was the concept originator and principal investigator for the University of Illinois Center for Advanced Rockets (CSAR).

show abstract

Section: A Nonlinear Stability Of Detonation Flows Over Wedges and Bmentioning

confidence: 99%

State of Detonation Stability Theory and Its Application to Propulsion

Stewart

Kasimov

2006

Journal of Propulsion and Power

View full text Add to dashboard Cite

show abstract

“…This is usually represented in pressure-flow deflection coordinates as a detonation polar. There have been many studies of the detonation polars and the implications for oblique detonation waves, a review of this prior work is provided by Pratt et al (1991). An outline of the analysis and its implications are given below.…”

Section: Discontinuity Analysismentioning

confidence: 99%

“…Chernyi (1966) considered this flow and the axisymmetric analog, flow over a cone, in some detail. Pratt et al (1991) considered the two-dimensional flow, particularly the situation with a uniform flow downstream. In addition, there have been a number of recent theoretical studies (Li et al 1993, Powers and Stewart 1992, Cambier et al 1989, Buckmaster and Lee 1990, Buckmaster 1990 ) of the two-dimensional flow over a wedge or a cone.…”

Section: Waves On Wedges Instabilities and Initiationmentioning

confidence: 99%

See 1 more Smart Citation

Detonation Waves and Propulsion

Shepherd

1994

ICASE/LaRC Interdisciplinary Series in Science and Engineering

View full text Add to dashboard Cite

The possibility of using a detonation wave as the key combustion system for supersonic propulsion is examined. A brief review of propagating detonations is provided first. This review emphasizes the unique and unstable nature of the coupling between reaction zone and shock waves that characterize detonations. The theory of idealized, steady, oblique detonation waves and their reaction zone structure are summarized. The evidence for the existence of stabilized or steady oblique detonations is discussed. Experiments with multiple layers of explosive and projectiles fired into explosive gases are examined. There are a variety of reasons that these previous studies have failed to produce stabilized detonations. A brief catalog of difficulties is provided and based on andogies with our knowledge of propagating detonations, a set of criteria are proposed for the existence and stability of stabilized detonations. The problems of initiation and instability are examined for the situation of a flow over a wedge.

show abstract

“…program revived that interest and prompted several analytical and experimental studies on oblique detonation waves as an alternative to supersonic combustion [14]. Within the past decade interest has again developed in the use of detonations in a propulsion device in the form of Pulse Detonation Engines for airbreathing (PDE) and rocket applications (PDRE) [15].…”

Section: Pulse Detonation Engine Studies Using Coal-based Jp-900 (mentioning

confidence: 99%

Combustion Studies of Coal Derived Fuels

Santoro¹

2000

View full text Add to dashboard Cite

Morphology of standing oblique detonation waves

Cited by 197 publications

References 16 publications

State of Detonation Stability Theory and Its Application to Propulsion

State of Detonation Stability Theory and Its Application to Propulsion

Detonation Waves and Propulsion

Combustion Studies of Coal Derived Fuels

Contact Info

Product

Resources

About