Experimental study on external explosion for vented hydrogen deflagration in a rectangular tube with different vent coefficients

2021 ◽  
Author(s):  
Qiao Wang ◽  
Xinjiao Luo ◽  
Changjian Wang ◽  
Yi Liu ◽  
Penggan Zhou ◽  
...  
Keyword(s):  
Experimental Study ◽  
Rectangular Tube

Numerical and Experimental Study of Detonation Propagation in a Rectangular Tube with Obstacles

2004 ◽  
Author(s):  
Satoshi Shiokawa ◽  
Hiroyuki Sato ◽  
A. Koichi Hayashi ◽  
Keitaro Eto ◽  
Nobuyuki Tsuboi ◽  
...  
Keyword(s):  
Experimental Study ◽  
Detonation Propagation ◽  
Rectangular Tube

Numerical and experimental study of shock waves emanating from an open-ended rectangular tube

Shock Waves ◽  
2016 ◽  
Vol 26 (3) ◽  
pp. 269-277 ◽  
Author(s):  
E. Yu. Koroteeva ◽  
I. A. Znamenskaya ◽  
F. N. Glazyrin ◽  
N. N. Sysoev
Keyword(s):  
Experimental Study ◽  
Shock Waves ◽  
Rectangular Tube

Experimental study of the pinned double rectangular tube assembled buckling-restrained brace

2017 ◽  
Vol 18 (1) ◽  
pp. 20-32 ◽  
Author(s):  
Zi-qin Jiang ◽  
Yan-lin Guo ◽  
Ai-lin Zhang ◽  
Chao Dou ◽  
Cai-xia Zhang
Keyword(s):  
Experimental Study ◽  
Buckling Restrained Brace ◽  
Rectangular Tube

Experimental Study of Flow Oscillation in a Rectangular Jet-Driven Tube

1990 ◽  
Vol 112 (1) ◽  
pp. 23-27 ◽  
Author(s):  
J. Iwamoto
Keyword(s):  
Experimental Study ◽  
Flow Field ◽  
Steady Flow ◽  
Oscillatory Flow ◽  
Necessary Conditions ◽  
Experimental Results ◽  
Flow Oscillation ◽  
Rectangular Jet ◽  
Rectangular Tube

Several papers, mainly of a theoretical nature, have been published on the oscillatory flow in a Hartmann-Sprenger tube. Quantitative exploration of the flow field has proved difficult and details are lacking. In the present work, using a rectangular tube, synchronous shadow-photography has been applied to visualize the flow field during stable oscillatory flow. The measurement of pressure has also been made for the case of steady flow when both ends of the tube are open. From these experimental results the necessary conditions for starting and maintaining a stable oscillatory flow in an H-S tube have been established.

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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