scholarly journals Effect of in-plane shear flow on the magnetic island coalescence instability

2021 ◽  
Vol 28 (7) ◽  
pp. 072103
Author(s):  
Jagannath Mahapatra ◽  
Arkaprava Bokshi ◽  
Rajaraman Ganesh ◽  
Abhijit Sen
Keyword(s):  
Shear Flow ◽  
Magnetic Island ◽  
Plane Shear ◽  
Island Coalescence

Influence of Insulation Type on In-Plane Shear Behavior of Insulated Concrete Sandwich Panels (ICSP) with GFRP Grid Shear Connectors

2014 ◽  
Vol 525 ◽  
pp. 416-419 ◽  
Author(s):  
Hye Ran Kim ◽  
Dae Hyun Kang ◽  
Hyun Do Yun
Keyword(s):  
Shear Flow ◽  
Outer Wall ◽  
Expanded Polystyrene ◽  
Test Results ◽  
Flow Strength ◽  
Plane Shear ◽  
Shear Connectors ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced ◽  
Shear Performance

This paper reports the experimental results to evaluate in-plane shear performance of insulated concrete sandwich panel (ICSP) with glass fiber-reinforced polymer (GFRP) grid shear connectors. The variables considered in this study are the grid size (35 and 53mm) of GFRP shear connectors and the types of insulation (expanded polystyrene, EPS and extruded polystyrene with special slots, XPSS). For loading in-plane shear force to interface between inner and outer wall of ICSP system, the ICSP specimens were supported vertically at the bottom edge of the two concrete outer walls by steel blocks. The test results indicate that ICSP with XPSS developed higher shear flow strengths in ICSP with EPS when 35mm spacing of GFRP grid is used. Also, the test results indicated that as the grid spacing of GFRP shear connector decreases, the shear flow strength of ICSP with XPSS insulation was higher, but the shear flow strength of ICSP with EPS insulation was lower.

Electron acceleration via magnetic island coalescence

2009 ◽  
Author(s):  
I. Shinohara ◽  
T. Yumura ◽  
K. G. Tanaka ◽  
M. Fujimoto ◽  
Masfumi Hirahara ◽  
...  
Keyword(s):  
Electron Acceleration ◽  
Magnetic Island ◽  
Island Coalescence

scholarly journals Structure of Plane Shear Flow in River with Vegetations.

1994 ◽  
pp. 41-50 ◽  
Author(s):  
Shoji Fukuoka ◽  
Akihide Watanabe ◽  
Takayuki Tsumori
Keyword(s):  
Shear Flow ◽  
Plane Shear

scholarly journals Multiscale Simulation of Non-Metallic Inclusion Aggregation in a Fully Resolved Bubble Swarm in Liquid Steel

Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 517
Author(s):  
Jean-Sébastien Kroll-Rabotin ◽  
Matthieu Gisselbrecht ◽  
Bernhard Ott ◽  
Ronja May ◽  
Jochen Fröhlich ◽  
...  
Keyword(s):  
Particle Size ◽  
Shear Flow ◽  
Initial Conditions ◽  
Bubbly Flow ◽  
Multiscale Simulation ◽  
Particle Collision ◽  
Immersed Boundary ◽  
Collision Dynamics ◽  
Plane Shear ◽  
Boltzmann Method

Removing inclusions from the melt is an important task in metallurgy with critical impact on the quality of the final alloy. Processes employed with this purpose, such as flotation, crucially depend on the particle size. For small inclusions, the aggregation kinetics constitute the bottleneck and, hence, determine the efficiency of the entire process. If particles smaller than all flow scales are considered, the flow can locally be replaced by a plane shear flow. In this contribution, particle interactions in plane shear flow are investigated, computing the fully resolved hydrodynamics at finite Reynolds numbers, using a lattice Boltzmann method with an immersed boundary method. Investigations with various initial conditions, several shear values and several inclusion sizes are conducted to determine collision efficiencies. It is observed that although finite Reynolds hydrodynamics play a significant role in particle collision, statistical collision efficiency barely depends on the Reynolds number. Indeed, the particle size ratio is found to be the prevalent parameter. In a second step, modeled collision dynamics are applied to particles tracked in a fully resolved bubbly flow, and collision frequencies at larger flow scale are derived.

scholarly journals Energy dissipation in body-forced plane shear flow

2003 ◽  
Vol 494 ◽  
pp. 275-284 ◽  
Author(s):  
C. R. DOERING ◽  
B. ECKHARDT ◽  
J. SCHUMACHER
Keyword(s):  
Energy Dissipation ◽  
Shear Flow ◽  
Plane Shear

Discrete Vortex Analysis of a Spark-Ignited Premixed Flame in a Plane Shear Flow

2003 ◽  
Vol 2003.3 (0) ◽  
pp. 5-6
Author(s):  
Daisuke YOKOI ◽  
Yojiro ISHINO ◽  
Hirotaka KATO ◽  
Norio OHIWA
Keyword(s):  
Shear Flow ◽  
Premixed Flame ◽  
Plane Shear ◽  
Discrete Vortex

On the shape and breaking of finite amplitude internal gravity waves in a shear flow

1978 ◽  
Vol 85 (1) ◽  
pp. 7-31 ◽  
Author(s):  
S. A. Thorpe
Keyword(s):  
Shear Flow ◽  
Internal Waves ◽  
Gravity Waves ◽  
Second Harmonic ◽  
Mixing Layer ◽  
Phase Speed ◽  
Internal Gravity Waves ◽  
Finite Amplitude ◽  
Depth Interval ◽  
Plane Shear

This paper is concerned with two important aspects of nonlinear internal gravity waves in a stably stratified inviscid plane shear flow, their shape and their breaking, particularly in conditions which are frequently encountered in geophysical applications when the vertical gradients of the horizontal current and the density are concentrated in a fairly narrow depth interval (e.g. the thermocline in the ocean). The present theoretical and experimental study of the wave shape extends earlier work on waves in the absence of shear and shows that the shape may be significantly altered by shear, the second-harmonic terms which describe the wave profile changing sign when the shear is increased sufficiently in an appropriate sense.In the second part of the paper we show that the slope of internal waves at which breaking occurs (the particle speeds exceeding the phase speed of the waves) may be considerably reduced by the presence of shear. Internal waves on a thermocline which encounter an increasing shear, perhaps because of wind action accelerating the upper mixing layer of the ocean, may be prone to such breaking.This work may alternatively be regarded as a study of the stability of a parallel stratified shear flow in the presence of a particular finite disturbance which corresponds to internal gravity waves propagating horizontally in the plane of the flow.

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