Numerical Analysis of the Particle Dynamics in a Supersonic Gas Stream with a Modified Point-Particle Euler–Lagrange Approach

2021 ◽  
Vol 52 (2) ◽  
pp. 1034-1051
Author(s):  
Mingming Li ◽  
Lin Li ◽  
Lei Shao ◽  
Qiang Li ◽  
Zongshu Zou ◽  
...  
1998 ◽  
Vol 11 (2) ◽  
pp. 622-627
Author(s):  
Simon F. Portegies Zwart ◽  
Christopher A. Tout ◽  
Hyung Mok Lee

AbstractDynamical models of star clusters are maturing in the sense that effects other than simple point particle dynamics are taken into account. We summarize the relevance of, and prospects for, this new generation of N-body models.


2009 ◽  
Vol 23 (28) ◽  
pp. 3311-3331
Author(s):  
J. K. PERCUS

This is a review of some recent developments in the theory of classical nanoscale fluid dynamics, with tagged particle dynamics as the signature of transport properties. A heuristic analysis of the time asymptotic regime in strictly one-dimensional flow is followed by an exact treatment of the same system, with arbitrary non-interacting point particle dynamics. Stretched time and space coordinates allow us to obtain a universal form — the telegrapher's equation — for the self-dynamics after transients have died down. Attention then shifts to one-particle diffusion in a spatially modulated tubular enclosure, which is analyzed by increasingly sophisticated approximation methods. With this background, single-file fluid flow in modulated enclosures is studied, and preliminary analysis of the "passing region" carried out as well.


Author(s):  
Amir Sultan Khan ◽  
Farhad Ali ◽  
Israr Ali Khan

The field of point particle dynamics is correlated with the particle dynamics around a black hole, and one can initiate the investigation of a more complex motion of extended bodies/celestial bodies. In this article, we study the dynamics of neutral/charged particles around the AdS Schwarzschild black hole surrounded by quintessence. At the foot of Noether symmetries and the conservation laws of the proposed spacetime, we discuss the effect of the cosmological constant, angular momentum, quintessence parameter, and magnetic field on the dynamics of neutral and charged particles in the form of the effective potential, effective force and escape velocity. Finally, we investigate the orbit stability of spacetime with the help of the Lyapunov exponent.


2020 ◽  
Vol 301 ◽  
pp. 112459
Author(s):  
C.P. Karthikeyan ◽  
G. Kalpana ◽  
V. Krishnamoorthy ◽  
Anand A. Samuel

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