Results 11 to 20 of about 48,052 (261)

Temporal evolution of a radiating star via Lie symmetries

European Physical Journal C: Particles and Fields, 2021
In this work we present for the first time the general solution of the temporal evolution equation arising from the matching of a conformally flat interior to the Vaidya solution. This problem was first articulated by Banerjee et al.
Andronikos Paliathanasis, Megandhren Govender, Genly Leon   +2 more
doaj   +1 more source

Influence of physical parameters on the collapse of a spherical bubble

Theoretical and Applied Mechanics Letters, 2022
This paper examines the influence of physical parameters on the collapse dynamics of a spherical bubble filled with diatomic gas (κ=7/5). The problem is formulated by the Rayleigh–Plesset dynamical equation, whose numerical solutions are carried out by ...
Bo-Hua Sun
doaj   +1 more source

Dynamics and Collapse in a Power System Model with Voltage Variation: The Damping Effect. [PDF]

PLoS ONE, 2016
Complex nonlinear phenomena are investigated in a basic power system model of the single-machine-infinite-bus (SMIB) with a synchronous generator modeled by a classical third-order differential equation including both angle dynamics and voltage dynamics,
Jinpeng Ma, Yong Sun, Xiaoming Yuan, Jürgen Kurths, Meng Zhan   +4 more
doaj   +1 more source

Effect of Ovality Length on Collapse Strength of Imperfect Sandwich Pipes Due to Local Buckling

Journal of Marine Science and Engineering, 2021
The effect of ovality length on imperfect sandwich pipes is investigated using the finite element method in the scenario of local buckling under external pressure.
Ruoxuan Li, Bai-Qiao Chen, C. Guedes Soares   +2 more
doaj   +1 more source

Dynamic multiscaling in stochastically forced Burgers turbulence

Scientific Reports, 2023
We carry out a detailed study of dynamic multiscaling in the turbulent nonequilibrium, but statistically steady, state of the stochastically forced one-dimensional Burgers equation.
Sadhitro De, Dhrubaditya Mitra, Rahul Pandit   +2 more
doaj   +1 more source

Collapse Dynamics of Vortex Beams in a Kerr Medium with Refractive Index Modulation and PT-Symmetric Lattices

Photonics, 2022
Using the two-dimensional nonlinear Schrödinger equation, the collapse dynamics of vortex beams in a Kerr medium with refractive index modulation and parity–time (PT) symmetric lattices are explored. The critical power for the collapse of vortex beams in
Gang Yao, Yuhua Li, Rui-Pin Chen
doaj   +1 more source

Charged anisotropic spherical collapse with heat flow

European Physical Journal C: Particles and Fields, 2021
In this article, we study the shear-free gravitational collapse of a charged radiating star. The Einstein field equations of gravitational collapse for the charged stars are known to give rise to a high degree of non-linearity in the ordinary ...
Kali Charan, Om Prakash Yadav, B. C. Tewari   +2 more
doaj   +1 more source

Collapse of Corroded Pipelines under Combined Tension and External Pressure. [PDF]

PLoS ONE, 2016
In this work, collapse of corroded pipeline under combined external pressure and tension is investigated through numerical method. Axially uniform corrosion with symmetric imperfections is firstly considered.
Hao Ye, Sunting Yan, Zhijiang Jin
doaj   +1 more source

The nature of the naked singularity in generalized Vaidya spacetime and white hole geodesics

Physics of Complex Systems, 2021
This paper gives conditions to the energy-momentum tensor when the gravitational collapse of generalized Vaidya spacetime results in a naked singularity.
Виталий Дмитриевич Вертоградов
doaj   +1 more source

The influence of receptor interval and shot interval on the detection of collapse column

矿业科学学报, 2021
Based on the geological characteristics and the seismic wave propagation characteristics of the collapse column, a collapse column model is constructed.
Liu Jiahao, Zhu Guowei
doaj   +1 more source