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Steady-state traffic flow on a ring road with up- and down-slopes

Wu, Chun-Xiu; Zhang, Peng; Wong, S.C.; Choi, Keechoo - In: Physica A: Statistical Mechanics and its Applications 403 (2014) C, pp. 85-93

equilibrium constant states are linearly stable. In other cases, the instability of one or more equilibria could trigger stop …

Persistent link: https://www.econbiz.de/10010873324

Freezing transition in the mean-field approximation model of pedestrian counter flow

Nagatani, Takashi - In: Physica A: Statistical Mechanics and its Applications 388 (2009) 24, pp. 4973-4978

We study the freezing transition in the counter flow of pedestrians within the channel numerically and analytically. We present the mean-field approximation (MFA) model for the pedestrian counter flow. The model is described in terms of a couple of nonlinear difference equations. The...

Persistent link: https://www.econbiz.de/10010872779

Stability and transition in multiple production lines

Nagatani, Takashi - In: Physica A: Statistical Mechanics and its Applications 334 (2004) 1, pp. 243-254

for the multiple production lines. The nonlinear instability and dynamical transition are investigated by using computer …

Persistent link: https://www.econbiz.de/10010589052

Patterns in hydraulic ripples with binary granular mixtures

Caps, H; Vandewalle, N - In: Physica A: Statistical Mechanics and its Applications 313 (2002) 3, pp. 357-364

An experimental study of a binary granular mixture submitted to a transient shear flow in a cylindrical container is reported. The formation of ripples with a spiral shape is observed. The appearance of phase segregation in those spiral patterns is shown. The relative grain sizé between sand...

Persistent link: https://www.econbiz.de/10010589348

Power-law periodicity in the 2003–2004 crude oil price dynamics

Alvarez-Ramirez, Jose; Ibarra-Valdez, Carlos; Bernabe, … - In: Physica A: Statistical Mechanics and its Applications 349 (2005) 3, pp. 625-640

200% increment, which may indicate that the market instability is becoming stronger. …

Persistent link: https://www.econbiz.de/10010589486

Momentum transport equation for the fluids using projection–perturbation formalism and onset of turbulence

Jirkovsky, L.; Bo-ot, L. - In: Physica A: Statistical Mechanics and its Applications 352 (2005) 2, pp. 241-251

It is shown that it is possible to derive corrections to the Navier–Stokes equation from the Liouville equation using projection techniques and a perturbation analysis. In the first order the Reynolds equation is obtained, in the second- and third-order corrections to the Navier–Stokes...

Persistent link: https://www.econbiz.de/10010589491

Lattice Boltzmann equation simulation of rectangular jet (AR=1.5) instability and axis-switching

Yu, Huidan; Girimaji, Sharath S. - In: Physica A: Statistical Mechanics and its Applications 362 (2006) 1, pp. 151-157

We investigate the axis-switching and instability onset characteristics of a rectangular jet with aspect ratio (AR) of … are examined. The simulation results show the following instability characteristics: (i) At relatively low Reynolds … roughly. Instability first originates near the jet orifice and then propagates down the stream. …

Persistent link: https://www.econbiz.de/10010590044

Dynamical transition in random supply chain

Nagatani, Takashi - In: Physica A: Statistical Mechanics and its Applications 335 (2004) 3, pp. 661-670

We present the stochastic model of the supply chain composed of u series machines and buffers. Each machine has an adaptation time (delay) different from the other and each buffer has a capacity of storage different from the other. We extend the deterministic supply chain model to the stochastic...

Persistent link: https://www.econbiz.de/10010590143

Freezing transition in a four-directional traffic model for facing and crossing pedestrian flow

Nagatani, Takashi; Komada, Kazuhito - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 8, pp. 1729-1738

We study the traffic behavior in the facing and crossing traffic of pedestrians numerically and analytically. There are four kinds of walkers, those moving to east, to west, to north, and to south. We present the mean-field approximation (MFA) model for the four-directional traffic. The model is...

Persistent link: https://www.econbiz.de/10010590263

Amplitude equation for stationary convection in a binary viscoelastic fluid

Martinez-Mardones, J; Tiemann, R; Walgraef, D - In: Physica A: Statistical Mechanics and its Applications 327 (2003) 1, pp. 29-33

Thermal convection in binary fluids with Oldroyd viscoelastic properties is studied close to threshold. The role of retardation time, characteristic of viscoelastic fluids, and Soret effect, characteristic of binary fluids, is emphasized. A weakly nonlinear analysis is performed for stationary...

Persistent link: https://www.econbiz.de/10010591538