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We prove the existence and uniqueness, for wave speeds sufficiently large, of monotone traveling wave solutions connecting stable to unstable spatial equilibria for a class of $N$-dimensional lattice differential equations with…

动力系统 · 数学 2010-06-14 Aaron Hoffman , Benjamin Kennedy

We describe traveling waves in a basic model for three-dimensional water-wave dynamics in the weakly nonlinear long-wave regime. Small solutions that are periodic in the direction of translation (or orthogonal to it) form an…

斑图形成与孤子 · 物理学 2015-06-26 Robert L. Pego , Jose Raul Quintero

A new selection phenomenon in nonlinear interface dynamics is predicted. A generic class of exact regular unsteady multi-bubble solutions in a Hele-Shaw cell is presented. These solutions show that the case where the asymptotic bubble…

流体动力学 · 物理学 2024-01-23 Mark Mineev-Weinstein , Giovani L. Vasconcelos

Many car-following models of traffic flow admit the possibility of absolute stability, a situation in which uniform traffic flow at any spacing is linearly stable. Near the threshold of absolute stability, these models can often be reduced…

斑图形成与孤子 · 物理学 2026-04-13 Douglas A. Kurtze

We analyzed the stability of the uniform flow solution in the optimal velocity model for traffic and granular flow under the open boundary condition. It was demonstrated that, even within the linearly unstable region, there is a parameter…

统计力学 · 物理学 2009-10-31 Namiko Mitarai , Hiizu Nakanishi

We perform a non-linear analysis of a fluid-fluid wavy-stratified flow using a simplified two-fluid model, i.e., the fixed-flux model (FFM) which is an adaptation of shallow water theory for the two-layer problem. Linear analysis using the…

We obtain exact travelling wave solutions for three families of stochastic one-dimensional nonequilibrium lattice models with open boundaries. These solutions describe the diffusive motion and microscopic structure of (i) of shocks in the…

统计力学 · 物理学 2009-11-10 K. Krebs , F. H. Jafarpour , G. M. Schütz

The Biham, Middleton and Levine (BML) model is extended to describe dynamic route choices between the residence and workplace in cities. The traffic dynamic in the city with a single workplace is studied from the velocity diagram, arrival…

物理与社会 · 物理学 2015-06-05 Jun Fang , Jing Shi , Xi-Qun Chen , Zheng Qin

We consider a hyperbolic system of three conservation laws in one space variable. The system is a model for fluid flow allowing phase transitions; in this case the state variables are the specific volume, the velocity and the mass density…

偏微分方程分析 · 数学 2007-07-07 Debora Amadori , Andrea Corli

We present an exactly solvable model for queue dynamics. Our model is very simple but provides the essential property for such dynamics. As an example, the model has the traveling cluster solution as well as the homogeneous flow solution.…

patt-sol · 物理学 2008-02-03 Y. Sugiyama , H. Yamada

We prove existence and uniqueness of solutions to a transport equation modelling vehicular traffic in which the velocity field depends non-locally on the downstream traffic density via a discontinuous anisotropic kernel. The result is…

偏微分方程分析 · 数学 2015-10-16 Paola Goatin , Francesco Rossi

The simulation of traffic flow on networks requires knowledge on the behavior across traffic intersections. For macroscopic models based on hyperbolic conservation laws there exist nowadays many ad-hoc models describing this behavior. Based…

数值分析 · 数学 2023-08-21 Michael Herty , Niklas Kolbe

In this paper a spatial homogeneous vehicular traffic flow model based on a stochastic master equation of Boltzmann type in the acceleration variable is solved numerically for a special driver interaction model. The solution is done by a…

其他凝聚态物理 · 物理学 2009-11-10 K. Thomas Waldeer

In this paper, we introduce a dynamical urban planning model. This leads us to study a system of nonlinear equations coupled through multi-marginal optimal transport problems. A simple case consists in solving two equations coupled through…

偏微分方程分析 · 数学 2018-05-04 Maxime Laborde

We investigate traffic flows using the kinetic Boltzmann equations with a Maxwell collision integral. This approach allows analytical determination of the transient behavior and the size distributions. The relaxation of the car and cluster…

统计力学 · 物理学 2007-05-23 E. Ben-Naim , P. L. Krapivsky

In this paper, we study mixed traffic systems that move along a single-lane ring-road or open-road. The traffic flow forms a platoon, which includes a number of heterogeneous human-driven vehicles (HDVs) together with only one connected and…

最优化与控制 · 数学 2021-07-29 Shima Sadat Mousavi , Somayeh Bahrami , Anastasios Kouvelas

A set of exact solutions for a cellular automaton, which is a hybrid of the optimal velocity and the slow-to-start models, is presented. The solutions allow coexistence of free flows and jamming or slow clusters, which is observed in…

元胞自动机与格子气 · 物理学 2012-11-20 Hideaki Ujino , Tetsu Yajima

We analyze the steady-state flow as a function of the initial density for a class of deterministic cellular automata rules (``traffic rules'') with periodic boundary conditions [H. Fuks and N. Boccara, Int. J. Mod. Phys. C 9, 1 (1998)]. We…

元胞自动机与格子气 · 物理学 2007-05-23 Janne V. Kujala , Tuomas J. Lukka

Traffic jam in an optimal velocity model with the backward reference function is analyzed. An analytic scaling solution is presented near the critical point of the phase separation. The validity of the solution has been confirmed from the…

patt-sol · 物理学 2008-02-03 H. Hayakawa , K. Nakanishi

Statistical mechanics of a small system of cars on a single-lane road is developed. The system is not characterized by a Hamiltonian but by a conditional probability of a velocity of a car for the given velocity and distance of the car…

物理与社会 · 物理学 2009-11-13 Anton Šurda