Three-dimensional kinetic simulation of the nonlinear evolution of lower hybrid pump waves

1998 ◽  
Vol 103 (A5) ◽  
pp. 9333-9349 ◽  
Author(s):  
Nagendra Singh ◽  
B. Earl Wells ◽  
A. Abdelrazek ◽  
S. Al-Sharaeh ◽  
W. C. Leung
Keyword(s):  
Nonlinear Evolution ◽  
Three Dimensional ◽  
Lower Hybrid ◽  
Kinetic Simulation ◽  
Pump Waves

Nonlinear propagation of lower-hybrid waves in an inhomogeneous plasma

1978 ◽  
Vol 20 (2) ◽  
pp. 189-203 ◽  
Author(s):  
M. Y. Yu ◽  
P. K. Shukla ◽  
K. H. Spatschek
Keyword(s):  
Nonlinear Evolution ◽  
Inhomogeneous Plasma ◽  
Three Dimensional ◽  
Low Frequency ◽  
Nonlinear Propagation ◽  
Lower Hybrid ◽  
Density Perturbations ◽  
Hybrid Waves ◽  
Lower Hybrid Waves ◽  
Pump Depletion

We investigate the problem of spatial depletion of propagating lower-hybrid waves in an inhomogeneous plasma. In particular, we consider the nonlinear evolution of a lower-hybrid pump which is coupled to a daughter lower-hybrid decay wave excited by low-frequency density perturbations. Our results show that pump depletion occurs when three-dimensional effects are included. This phenomenon competes with the filamentation of the pump caused by self- interaction. Implications to lower-hybrid heating experiments are discussed.

Observation of the lower hybrid waves near the three-dimensional null pair

2009 ◽  
Vol 52 (4) ◽  
pp. 626-630 ◽  
Author(s):  
Meng Zhou ◽  
XiaoHua Deng ◽  
Song Fu ◽  
RongXin Tang ◽  
YunHui Hu ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Lower Hybrid ◽  
Hybrid Waves ◽  
Null Pair ◽  
Lower Hybrid Waves

scholarly journals Lump Solutions, Multi Lump Solutions and More Soliton Solutions of a Novel (2+1)-dimensional Nonlinear Evolution Equation

2021 ◽  
Author(s):  
Hongcai Ma ◽  
Shupan Yue ◽  
Yidan Gao ◽  
Aiping Deng
Keyword(s):  
Evolution Equation ◽  
Nonlinear Evolution Equation ◽  
Nonlinear Evolution ◽  
Three Dimensional ◽  
Soliton Solutions ◽  
Bilinear Method ◽  
Test Function ◽  
Lump Solutions ◽  
Hirota Bilinear ◽  
Test Function Method

Abstract Exact solutions of a new (2+1)-dimensional nonlinear evolution equation are studied. Through the Hirota bilinear method, the test function method and the improved tanh-coth and tah-cot method, with the assisstance of symbolic operations, one can obtain the lump solutions, multi lump solutions and more soliton solutions. Finally, by determining different parameters, we draw the three-dimensional plots and density plots at different times.

NONLINEAR EVOLUTION OF TURBULENT COHERENT STRUCTURES IN CHANNEL FLOWS

2005 ◽  
Vol 19 (28n29) ◽  
pp. 1539-1542
Author(s):  
ZHANG LI ◽  
DENGBIN TANG ◽  
LINLIN GUO
Keyword(s):  
Coherent Structures ◽  
Nonlinear Evolution ◽  
Three Dimensional ◽  
Channel Flows ◽  
Navier Stokes ◽  
Theoretic Model ◽  
Compact Difference Scheme ◽  
Navier Stokes Equation ◽  
Turbulent Coherent Structures ◽  
Dimensional Coupling

The generation and the development of turbulent coherent structures in channel flows are investigated by using numerical simulation of Navier-Stokes equation and the theoretic model of turbulent coherent structures built up by the flow stability theories. The three-dimensional coupling compact difference scheme with high accuracy and resolution developed can be applied to the calculative region including points near the boundary. The results computed show nonlinear evolution process and characteristics of Reynolds stress, stream-wise vortices and span-wise vorticities, especially the nonlinear interactions between different coherent structures.

GREEN'S FUNCTION AND SUPER-PARTICLE METHODS FOR KINETIC SIMULATION OF HETEROEPITAXY

2007 ◽  
Vol 21 (23n24) ◽  
pp. 4219-4224 ◽  
Author(s):  
CHI-HANG LAM ◽  
M. T. LUNG
Keyword(s):  
Thin Films ◽  
Monte Carlo ◽  
Monte Carlo Method ◽  
Green’S Function ◽  
Green's Function ◽  
Kinetic Monte Carlo ◽  
Three Dimensional ◽  
Particle Methods ◽  
Kinetic Simulation ◽  
Kinetic Monte Carlo Method

Arrays of nanosized three dimensional islands are known to self-assemble spontaneously on strained heteroepitaxial thin films. We simulate the dynamics using kinetic Monte Carlo method based on a ball and spring lattice model. Green's function and super-particle methods which greatly enhance the computational efficiency are explained.

OTSI of lower-hybrid waves in large- and small-size devices

1989 ◽  
Vol 41 (1) ◽  
pp. 13-22 ◽  
Author(s):  
V. K. Tripathi ◽  
P. V. Siva Rama Prasad
Keyword(s):  
Nonlocal Theory ◽  
Important Change ◽  
Local Theory ◽  
Lower Hybrid ◽  
Large Size ◽  
Pump Waves ◽  
Hybrid Waves ◽  
Fast Ion ◽  
Lower Hybrid Waves ◽  
Finite Extent

Oscillating two-stream instability (OTSI) of lower-hybrid pump waves has been studied in both large- and small-size devices. For large-size devices, the instability has been investigated by considering fast-ion-mode side-bands and employing local theory. The convective threshold due to the finite extent of the pump has been calculated. For small-size devices, the instability has been investigated by ignoring thermal effects on the side-bands but employing nonlocal theory. We have found that there is no important change in growth rates in both cases.

scholarly journals Three-dimensional kinetic simulation before and after rotational acetabular osteotomy

2014 ◽  
Vol 19 (3) ◽  
pp. 443-450 ◽  
Author(s):  
Shintaro Iwai ◽  
Tamon Kabata ◽  
Toru Maeda ◽  
Yoshitomo Kajino ◽  
Shin Watanabe ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Rotational Acetabular Osteotomy ◽  
Kinetic Simulation ◽  
Before And After

scholarly journals Three-dimensional instability of two nonlinearly coupled electromagnetic waves in a plasma

2008 ◽  
Vol 74 (3) ◽  
pp. 371-379 ◽  
Author(s):  
LENNART STENFLO ◽  
BENGT ELIASSON ◽  
MATTIAS MARKLUND
Keyword(s):  
Electromagnetic Waves ◽  
Pump Wave ◽  
Three Dimensional ◽  
Langmuir Wave ◽  
Ionospheric Heating ◽  
Ion Acoustic Wave ◽  
Instability Regions ◽  
Unmagnetized Plasma ◽  
Pump Waves ◽  
Dimensional Instability

AbstractThe three-dimensional instability of two coupled electromagnetic waves in an unmagnetized plasma is investigated theoretically and numerically. In the regime of two-plasmon decay, where one pump wave frequency is approximately twice the electron plasma frequency, we find that the coupled pump waves give rise to enhanced instability with wavevectors between those of the two beams. In the case of ion parametric decay instability, where the pump wave decays into one Langmuir wave and one ion acoustic wave, the instability regions are added with no distinct amplification. Our investigation can be useful in interpreting laser-plasma as well as ionospheric heating experiments.

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