Distinguishing hadronic cascades from hydrodynamic models inPb(160A GeV)+Pbreactions by impact parameter variation

The simulation of combined sewer overflow volumes and loads is important for the assessment of the overflow and overflow load to the receiving water to predict the hydraulic or the pollution impact. Hydrodynamic models are very data-intensive and time-consuming for long-term quality modelling. Hence, for long-term modelling, hydrological models are used to predict the storm flow in a fast way. However, in most cases, a constant rain intensity is used as load for the simulation, but in practice even for small catchments rain occurs in rain cells, which are not constant over the whole catchment area. This paper presents the results of quality modelling considering moving storms depending on the rain cell velocity and its moving direction. Additionally, tipping bucket gauge failures and different corrections are also taken into account. The results evidence the importance of these considerations for precipitation due the effects on overflow load and show the difference up to 28% of corrected and uncorrected data and of moving rain cells instead of constant raining intensities.

Download Full-text

A note on the relations between elastic and inelastic interactions and increasing ratio σel(s)/σtot(s) at the LHC

Modern Physics Letters A ◽

10.1142/s0217732319502596 ◽

2019 ◽

Vol 34 (32) ◽

pp. 1950259 ◽

Cited By ~ 5

Author(s):

S. M. Troshin ◽

N. E. Tyurin

Keyword(s):

Elastic Scattering ◽

Energy Dependence ◽

Impact Parameter ◽

Cross Sections ◽

Parameter Dependence ◽

Slope Parameter ◽

Short Notice ◽

Inelastic Interactions ◽

The Impact ◽

Mode A

We comment briefly on relations between the elastic and inelastic cross-sections valid for the shadow and reflective modes of the elastic scattering. Those are based on the unitarity arguments. It is shown that the redistribution of the probabilities of the elastic and inelastic interactions (the form of the inelastic overlap function becomes peripheral) under the reflective scattering mode can lead to increasing ratio of [Formula: see text] at the LHC energies. In the shadow scattering mode, the mechanism of this increase is a different one, since the impact parameter dependence of the inelastic interactions probability is central in this mode. A short notice is also given on the slope parameter and the leading contributions to its energy dependence in both modes.

Download Full-text

Selection of Hydrodynamic Models for the Nonlocal Response of Plasmonic Nanotopologies

2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting ◽

10.1109/ieeeconf35879.2020.9330066 ◽

2020 ◽

Author(s):

Mario Kupresak ◽

Xuezhi Zheng ◽

Guy A. E. Vandenbosch ◽

Victor V. Moshchalkov

Keyword(s):

Hydrodynamic Models ◽

Selection Of

Download Full-text

Hydrodynamic models of astrophysical wormholes: The general concept

Physics of Fluids ◽

10.1063/5.0056877 ◽

2021 ◽

Vol 33 (7) ◽

pp. 077121

Author(s):

Semyon Churilov ◽

Yury Stepanyants

Keyword(s):

General Concept ◽

Hydrodynamic Models

Download Full-text

Period-doubling bifurcation analysis and chaos control for load torque using FLC

Complex & Intelligent Systems ◽

10.1007/s40747-021-00276-2 ◽

2021 ◽

Author(s):

Eman Moustafa ◽

Abdel-Azem Sobaih ◽

Belal Abozalam ◽

Amged Sayed A. Mahmoud

Keyword(s):

Floquet Theory ◽

Chaos Control ◽

Fuzzy Logic Controller ◽

Chaotic Behavior ◽

Period Doubling ◽

Parameter Variation ◽

Period Doubling Bifurcation ◽

Load Torque ◽

Nonlinear Behaviors ◽

Scientific Fields

AbstractChaotic phenomena are observed in several practical and scientific fields; however, the chaos is harmful to systems as they can lead them to be unstable. Consequently, the purpose of this study is to analyze the bifurcation of permanent magnet direct current (PMDC) motor and develop a controller that can suppress chaotic behavior resulted from parameter variation such as the loading effect. The nonlinear behaviors of PMDC motors were investigated by time-domain waveform, phase portrait, and Floquet theory. By varying the load torque, a period-doubling bifurcation appeared which in turn led to chaotic behavior in the system. So, a fuzzy logic controller and developing the Floquet theory techniques are applied to eliminate the bifurcation and the chaos effects. The controller is used to enhance the performance of the system by getting a faster response without overshoot or oscillation, moreover, tends to reduce the steady-state error while maintaining its stability. The simulation results emphasize that fuzzy control provides better performance than that obtained from the other controller.

Download Full-text