SPECTROSCOPIC TEMPERATURE MEASUREMENTS IN A SHOCK TUBE USING CN AS A THERMOMETRIC MOLECULE

1960 ◽  
Vol 38 (6) ◽  
pp. 715-719 ◽  
Author(s):  
W. H. Parkinson ◽  
R. W. Nicholls
Keyword(s):  
Shock Wave ◽  
Shock Waves ◽  
Shock Tube ◽  
Wave Velocity ◽  
Dynamic Theory ◽  
Shock Wave Velocity ◽  
Velocity Measurements ◽  
Shock Excitation ◽  
Intensity Measurements ◽  
Gas Dynamic

Rotational intensity measurements on the CN spectrum, excited through shock excitation of a powdered mixture of NH4Cl, KNO2, and C by helium-driven shock waves in argon have been used to infer "rotational temperatures" of the gas between 6350 °K and 8750 °K. The measured values agree well with gas kinetic temperatures inferred from simple gas dynamic theory and shock-wave velocity measurements.

Laser-generated shock-wave velocity measurements using a visible backlighting technique

1986 ◽  
Vol 19 (4) ◽  
pp. 309-311 ◽  
Author(s):  
A Zigler ◽  
A Ludmirsky ◽  
S Jackel ◽  
M Givon ◽  
I Gilath ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Velocity ◽  
Shock Wave Velocity ◽  
Velocity Measurements

Effects of Shock Waves on Acceleration of Cell Growth Rate by Shock Tube

2008 ◽  
Author(s):  
Masaaki Tamagawa ◽  
Norikazu Ishimatsu
Keyword(s):  
Shock Wave ◽  
Growth Rate ◽  
Endothelial Cells ◽  
Shock Waves ◽  
Shock Tube ◽  
Test Case ◽  
Plane Shock ◽  
Extracorporeal Shock Wave ◽  
Shock Wave Pressure

This paper describes effects of shock waves on cells to certificate the angiogenesis by shock wave (pressure wave) in the clinical application such as ESW (Extracorporeal Shock Wave). Especially, to investigate the effects of shock waves on the endothelial cells in vitro, the cells worked by plane shock waves using shock tube apparatus are observed and measured in the microscope. The peak pressure working on the endothelial cells at the test case is 0.4 MPa. After working shock waves on suspended cells, growth rate (area per one cell and population of cells) are measured by image processing. It is found that the growth rate of the shock-worked cells from 0 to 4h is clearly high compared with control one. It is concluded that once shock waves worked, the cells have capacity to increase growth rate in vitro. This preliminary result will be applied to fundamental investigations about shock wave stimulus on several kinds of cells in future.

scholarly journals Shock wave velocity measuring system based on vernier VISAR-type interferometers

2015 ◽  
Vol 653 ◽  
pp. 012040 ◽  
Author(s):  
K L Gubskii ◽  
D S Koshkin ◽  
A S Antonov ◽  
A V Mikhailuk ◽  
V A Pirog ◽  
...  
Keyword(s):  
Shock Wave ◽  
Wave Velocity ◽  
Shock Wave Velocity ◽  
Measuring System ◽  
Velocity Measuring

Development of a Large Diameter Diaphragmless Shock Tube for Gas-Dynamic Laser Studies

2007 ◽  
Vol 566 ◽  
pp. 9-14 ◽  
Author(s):  
I. da S. Rego ◽  
K.N. Sato ◽  
S. Kugimiya ◽  
T. Aoki ◽  
Y. Miyoshi ◽  
...  
Keyword(s):  
Shock Waves ◽  
Shock Tube ◽  
Large Diameter ◽  
Gaseous Mixtures ◽  
Gas Dynamic ◽  
Diaphragmless Shock Tube ◽  
Good Accordance ◽  
Basic Characteristics ◽  
And Performance

This paper reports on the design and performance of a large diameter diaphragmless shock tube that has been recently developed in order to experimentally study various basic characteristics of the gas-dynamic laser (GDL). The main engineering element of the shock tube is a diaphragm-like sliding piston (in place of a rupturing diaphragm) by which normal shock waves are formed. The role of such a structure in generating repeatable shock waves is discussed. The shock tube performs in good accordance with the simple shock tube theory, as has been verified so far by experiments with some conventional lasing gases (gaseous mixtures of CO2 and N2 and those diluted with an excess of He) at shock wave Mach numbers ranging from 1 to 5. Recent results of the stagnation conditions achieved in the shock tube with application to GDL experiments are included as well.

Sensing of shock-wave velocity and pressure using shock-wave induced mechanoluminescence of crystals

2015 ◽  
Vol 235 ◽  
pp. 203-209 ◽  
Author(s):  
B.P. Chandra ◽  
S. Parganiha ◽  
V.K. Chandra ◽  
Piyush Jha ◽  
R.N. Baghel
Keyword(s):  
Shock Wave ◽  
Wave Velocity ◽  
Shock Wave Velocity ◽  
Wave Induced

scholarly journals Interaction of Shock Waves with Discrete Gas Inhomogeneities: A Smoothed Particle Hydrodynamics Approach

2019 ◽  
Vol 9 (24) ◽  
pp. 5435 ◽  
Author(s):  
Andrea Albano ◽  
Alessio Alexiadis
Keyword(s):  
Shock Wave ◽  
Shock Waves ◽  
Shock Tube ◽  
Smoothed Particle Hydrodynamics ◽  
Particle Hydrodynamics ◽  
Interaction Of Shock Waves ◽  
Smoothed Particle ◽  
Different Shapes ◽  
The Difference

In this study, we propose a smoothed particle hydrodynamics model for simulating a shock wave interacting with cylindrical gas inhomogeneities inside a shock tube. When the gas inhomogeneity interacts with the shock wave, it assumes different shapes depending on the difference in densities between the gas inhomogeneity and the external gas. The model uses a piecewise smoothing length approach and is validated by comparing the results obtained with experimental and CFD data available in the literature. In all the cases considered, the evolution of the inhomogeneity is similar to the experimental shadowgraphs and is at least as accurate as the CFD results in terms of timescale and shape of the gas inhomogeneity.

Sign in / Sign up

Export Citation Format

Share Document