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Title: Comparison of weak-shock reflection factors for wedges, cylinders and blast waves

Abstract

Ernst Mach (1838--1916) was the first to discover an irregular reflection phenomenon of shock waves, as is well known in our community. In fact, this occurred in 1875 -- three years earlier than usually assumed in the literature. A facsimile of the paper in which he mentioned a special shock wave behavior is shown in a figure. However, it is correct that Mach gave the physical interpretation of this phenomenon in 1878. Since Mach`s discovery of an irregular shock reflection pattern 117 years ago, new shock configurations have been discovered -- one of the most recent examples is the so-called {open_quotes}von Neumann reflection{close_quotes} for weak shocks as reported by Colella and Henderson in 1990. Due to active research efforts related to shock reflection, especially in the last two decades, we now have a relatively detailed understanding of reflection phenomena and of transition conditions from one reflection configuration to another. The purpose of this paper is to compare reflection factors for weak shocks from various surfaces, and to focus attention on some unsolved questions. Three different cases are considered: (1) square-wave planar shock reflection from wedges, (2) square-wave planar shock reflection from cylinders and (3) spherical blast wave reflection from amore » planar surface. The authors restrict themselves to weak shocks. Following Henderson`s definition, shocks with a Mach number of M{sub 0} < 1.56 in air or with an overpressure of {Delta}p{sub I} < 25 psi (1.66 bar) under normal ambient conditions are called weak.« less

Authors:
 [1];  [2]
  1. Fraunhofer-Institut fuer Kurzzeitdynamik - Ernst-Mach-Institut (EMI), Freiburg im Breisgau (Germany)
  2. Lawrence Livermore National Lab., CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10159856
Report Number(s):
UCRL-JC-110564; CONF-9207202-1
ON: DE93014120; CNN: Contract DNA-IACRO-92-824; Contract DNA-001-91-C-0039; TRN: 93:001469
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 10. Mach reflection symposium,Denver, CO (United States),20-23 Jul 1992; Other Information: PBD: Jul 1992
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 42 ENGINEERING; SHOCK WAVES; MATHEMATICAL MODELS; REFLECTION; SPACE DEPENDENCE; CONFIGURATION; DETONATION WAVES; ROUGHNESS; POROSITY; STEADY FLOW; IDEAL FLOW; GAS FLOW; PRESSURE DEPENDENCE; TEMPERATURE DEPENDENCE; 661300; 420400; OTHER ASPECTS OF PHYSICAL SCIENCE; HEAT TRANSFER AND FLUID FLOW

Citation Formats

Reichenbach, H, and Kuhl, A L. Comparison of weak-shock reflection factors for wedges, cylinders and blast waves. United States: N. p., 1992. Web.
Reichenbach, H, & Kuhl, A L. Comparison of weak-shock reflection factors for wedges, cylinders and blast waves. United States.
Reichenbach, H, and Kuhl, A L. 1992. "Comparison of weak-shock reflection factors for wedges, cylinders and blast waves". United States.
@article{osti_10159856,
title = {Comparison of weak-shock reflection factors for wedges, cylinders and blast waves},
author = {Reichenbach, H and Kuhl, A L},
abstractNote = {Ernst Mach (1838--1916) was the first to discover an irregular reflection phenomenon of shock waves, as is well known in our community. In fact, this occurred in 1875 -- three years earlier than usually assumed in the literature. A facsimile of the paper in which he mentioned a special shock wave behavior is shown in a figure. However, it is correct that Mach gave the physical interpretation of this phenomenon in 1878. Since Mach`s discovery of an irregular shock reflection pattern 117 years ago, new shock configurations have been discovered -- one of the most recent examples is the so-called {open_quotes}von Neumann reflection{close_quotes} for weak shocks as reported by Colella and Henderson in 1990. Due to active research efforts related to shock reflection, especially in the last two decades, we now have a relatively detailed understanding of reflection phenomena and of transition conditions from one reflection configuration to another. The purpose of this paper is to compare reflection factors for weak shocks from various surfaces, and to focus attention on some unsolved questions. Three different cases are considered: (1) square-wave planar shock reflection from wedges, (2) square-wave planar shock reflection from cylinders and (3) spherical blast wave reflection from a planar surface. The authors restrict themselves to weak shocks. Following Henderson`s definition, shocks with a Mach number of M{sub 0} < 1.56 in air or with an overpressure of {Delta}p{sub I} < 25 psi (1.66 bar) under normal ambient conditions are called weak.},
doi = {},
url = {https://www.osti.gov/biblio/10159856}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jul 01 00:00:00 EDT 1992},
month = {Wed Jul 01 00:00:00 EDT 1992}
}

Conference:
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