Laboratory simulation of large-scale wave front distortions in a turbulent atmosphere

1996 ◽  
Author(s):  
Sergei S. Chesnokov ◽  
I. V. Davletshina ◽  
Alexander V. Koryabin ◽  
Victor I. Shmalhausen
Keyword(s):  
Wave Front ◽  
Turbulent Atmosphere ◽  
Large Scale ◽  
Laboratory Simulation

Research on Moving Target Monitoring Collaborative Simulation Technology Based on Multi-Channel

2010 ◽  
Vol 20-23 ◽  
pp. 700-705
Author(s):  
Tian Yuan ◽  
Shang Guan Wei ◽  
Zhi Zhong Lu
Keyword(s):  
Large Scale ◽  
Target Space ◽  
Laboratory Simulation ◽  
Moving Target ◽  
Simulation Technology ◽  
Collaborative Simulation ◽  
Mobile Target ◽  
Target Monitoring ◽  
Six Degree Of Freedom ◽  
High Degree

Multi-channel Virtual reality simulation technology is a kind of simulation technology, which support the grand scene and high degree of immersion, has better visualization effect. In this paper, a moving target monitoring collaboratory simulation technology based on multi-channel is studied. Firstly, study the mathematical modeling foundation of Multi-Channel technology systematically, based on the mobile target spatial model and co-simulation technology, select the appropriate applications of multi-channel technology, building laboratory simulation platform and achieved a space-based six-degree of freedom simulation of multi-channel moving target monitoring simulation. The experiment has proved that in multi-channel target monitoring co-simulation technology used in this paper has strong practicality, combine with a moving target-space model and co-simulation technology, the advantages of objective observation to solve the requirements like large-scale, realism, immersion requirements, etc.

Breakout Stabilization in Shales - Evidence and Imaging from Large Scale Laboratory Simulation

2019 ◽  
Author(s):  
K.G.E. Teng ◽  
N.M.F. Nik Kamaruddin ◽  
I.H. Musa ◽  
C.P. Tan ◽  
A. Mohamad Hussein ◽  
...  
Keyword(s):  
Large Scale ◽  
Laboratory Simulation

Iterative Algorithms for Large Scale Wave Front Reconstruction

2001 ◽  
Author(s):  
Luc Gilles ◽  
Curtis R. Vogel ◽  
Brent L. Ellerbroek
Keyword(s):  
Wave Front ◽  
Large Scale ◽  
Iterative Algorithms

Experiments on surface deformation arising from a subsurface fracture

1995 ◽  
Vol 32 (6) ◽  
pp. 1024-1034 ◽  
Author(s):  
Gang Wang ◽  
Maurice B. Dusseault ◽  
Jerzy T. Pindera
Keyword(s):  
Large Scale ◽  
Surface Deformation ◽  
Scale Effects ◽  
Model Simulation ◽  
Laboratory Data ◽  
Nonlinear Problems ◽  
Laboratory Simulation ◽  
Scale Model ◽  
Laboratory Model ◽  
Hydraulic Fractures

Laboratory model simulation of large-scale earth processes is rarely undertaken because of scale effects, nonlinearity, and questions of representativeness with respect to the real case. Hydraulic fractures generate distortion fields that can be measured with high precision both in the laboratory and in the field. A combination of field and laboratory data allows us to test our ability to measure displacements, make forward predictions, and invert real measurements; thus it is important to have some means of simulation, other than purely numerical simulation. This paper contains the results of a set of experiments on the surface deformation arising from a pressurized fracture, using laser holography and Fizeau interferometry of noncontacting techniques to precisely sample the displacement field above a scale model. The results are remarkably accurate and consistent, and compare reasonably well with analytical and numerical model predictions. The techniques have potential applications in geomechanics and geotechnical engineering for laboratory study of various linear and nonlinear problems. Key words : laboratory simulation, holographic, Fizeau interferometry, hydrofractures.

scholarly journals Mesospheric bores at southern midlatitudes observed by ISS-IMAP/VISI: a first report of an undulating wave front

2018 ◽  
Vol 18 (22) ◽  
pp. 16399-16407 ◽  
Author(s):  
Yuta Hozumi ◽  
Akinori Saito ◽  
Takeshi Sakanoi ◽  
Atsushi Yamazaki ◽  
Keisuke Hosokawa
Keyword(s):  
Wave Front ◽  
Large Scale ◽  
Near Infrared ◽  
Inversion Layer ◽  
Space Station ◽  
Temperature Inversion ◽  
Wide Field ◽  
Broadband Emission ◽  
The Difference ◽  
Spectral Imager

Abstract. Large-scale spatial structures of mesospheric bores were observed by the Visible and near-Infrared Spectral Imager (VISI) of the ISS-IMAP mission (Ionosphere, Mesosphere, upper Atmosphere and Plasmasphere mapping mission from the International Space Station) in the mesospheric O2 airglow at 762 nm wavelength. Two mesospheric bore events in southern midlatitudes are reported in this paper: one event at 48–54∘ S, 10–20∘ E on 9 July 2015 and the other event at 35–43∘ S, 24∘ W–1∘ E on 7 May 2013. For the first event, the temporal evolution of the mesospheric bore was investigated from the difference of two observations in consecutive passes. The estimated eastward speed of the bore is 100 m s−1. The number of trailing waves increased with a rate of 3.5 waves h−1. Anticlockwise rotation with a speed of 20∘ h−1 was also recognized. These parameters are similar to those reported by previous studies based on ground-based measurements, and the similarity supports the validity of VISI observation for mesospheric bores. For the second event, VISI captured a mesospheric bore with a large-scale and undulating wave front. The horizontal extent of the wave front was 2200 km. The long wave front undulated with a wavelength of 1000 km. The undulating wave front is a new feature of mesospheric bores revealed by the wide field of view of VISI. We suggest that nonuniform bore propagating speed due to inhomogeneous background ducting structure might be a cause of the undulation of the wave front. Temperature measurements from the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) onboard the Thermosphere, Ionosphere, Mesosphere, Energetics and Dynamics (TIMED) satellite indicated that bores of both events were ducted in a temperature inversion layer.

Laboratory Simulation of the Dynamics of a Dense Plasma Cloud Expanding in a Magnetized Background Plasma on a Krot Large-Scale Device

JETP Letters ◽  
2018 ◽  
Vol 108 (6) ◽  
pp. 391-395 ◽  
Author(s):  
M. E. Gushchin ◽  
S. V. Korobkov ◽  
V. A. Terekhin ◽  
A. V. Strikovskiy ◽  
V. I. Gundorin ◽  
...  
Keyword(s):  
Large Scale ◽  
Dense Plasma ◽  
Background Plasma ◽  
Laboratory Simulation ◽  
Plasma Cloud
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