scholarly journals The formation of rings and gaps in wind-launching non-ideal MHD discs: three-dimensional simulations

2018 ◽  
Vol 484 (1) ◽  
pp. 107-124 ◽  
Author(s):  
Scott S Suriano ◽  
Zhi-Yun Li ◽  
Ruben Krasnopolsky ◽  
Takeru K Suzuki ◽  
Hsien Shang
Keyword(s):  
Three Dimensional ◽  
Ideal Mhd ◽  
Three Dimensional Simulations

scholarly journals Can Multi-threaded Flux Tubes in Coronal Arcades Support a Magnetohydrodynamic Avalanche?

Solar Physics ◽  
2021 ◽  
Vol 296 (8) ◽  
Author(s):  
J. Threlfall ◽  
J. Reid ◽  
A. W. Hood
Keyword(s):  
Magnetic Fields ◽  
Three Dimensional ◽  
Coronal Loops ◽  
Flux Tubes ◽  
Single Thread ◽  
Mhd Instabilities ◽  
Mhd Instability ◽  
Mhd Simulations ◽  
Ideal Mhd ◽  
Model Geometry

AbstractMagnetohydrodynamic (MHD) instabilities allow energy to be released from stressed magnetic fields, commonly modelled in cylindrical flux tubes linking parallel planes, but, more recently, also in curved arcades containing flux tubes with both footpoints in the same photospheric plane. Uncurved cylindrical flux tubes containing multiple individual threads have been shown to be capable of sustaining an MHD avalanche, whereby a single unstable thread can destabilise many. We examine the properties of multi-threaded coronal loops, wherein each thread is created by photospheric driving in a realistic, curved coronal arcade structure (with both footpoints of each thread in the same plane). We use three-dimensional MHD simulations to study the evolution of single- and multi-threaded coronal loops, which become unstable and reconnect, while varying the driving velocity of individual threads. Experiments containing a single thread destabilise in a manner indicative of an ideal MHD instability and consistent with previous examples in the literature. The introduction of additional threads modifies this picture, with aspects of the model geometry and relative driving speeds of individual threads affecting the ability of any thread to destabilise others. In both single- and multi-threaded cases, continuous driving of the remnants of disrupted threads produces secondary, aperiodic bursts of energetic release.

scholarly journals Two- and three-dimensional simulations of Rayleigh–Taylor instabilities using a coupled Cahn–Hilliard/Navier–Stokes model

2020 ◽  
Vol 32 (12) ◽  
pp. 124115
Author(s):  
R. Zanella ◽  
G. Tegze ◽  
R. Le Tellier ◽  
H. Henry
Keyword(s):  
Three Dimensional ◽  
Navier Stokes ◽  
Three Dimensional Simulations

scholarly journals GRAVITATIONAL FRAGMENTATION OF EXPANDING SHELLS. II. THREE-DIMENSIONAL SIMULATIONS

2011 ◽  
Vol 733 (1) ◽  
pp. 17 ◽  
Author(s):  
Kazunari Iwasaki ◽  
Shu-ichiro Inutsuka ◽  
Toru Tsuribe
Keyword(s):  
Three Dimensional ◽  
Expanding Shells ◽  
Three Dimensional Simulations

Thermospheric response to morningside diffuse aurora: High-resolution three-dimensional simulations

1995 ◽  
Vol 100 (A12) ◽  
pp. 23779 ◽  
Author(s):  
Zi-Ping Sun ◽  
R. P. Turco ◽  
R. L. Walterscheid ◽  
S. V. Venkateswaran ◽  
P. W. Jones
Keyword(s):  
High Resolution ◽  
Three Dimensional ◽  
Diffuse Aurora ◽  
Three Dimensional Simulations
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