The role of rotational inertia in the dynamics of vibrofluidised granular gases

2014 ◽  
Vol 108 (5) ◽  
pp. 58006 ◽  
Author(s):  
C. R. K. Windows-Yule ◽  
B. Maddox ◽  
D. J. Parker
Keyword(s):  
Rotational Inertia ◽  
Granular Gases

MODELS OF FREE COOLING GRANULAR GASES

2001 ◽  
Vol 04 (04) ◽  
pp. 321-331 ◽  
Author(s):  
UMBERTO MARINI BETTOLO MARCONI ◽  
ANDREA BALDASSARRI ◽  
ANDREA PUGLISI
Keyword(s):  
Kinetic Energy ◽  
Lattice Model ◽  
Topological Defects ◽  
Total Momentum ◽  
Granular Gases ◽  
Two Dimensional ◽  
Spatial Structures ◽  
Free Evolution ◽  
Free Cooling

We consider the free evolution of systems of granular particles whose dynamics is characterized by a collision rule which preserves the total momentum, but dissipates the kinetic energy. Starting from an inelastic version of a minimal model proposed by Ulam for a gas of Maxwell molecules, we introduce a new lattice model aimed at investigating the role of dynamical correlations and the onset of spatial order induced by the inelasticity of the interactions. We study, in one- and two-dimensional cases, the velocity distribution, the decay of the energy, the formation of spatial structures and topological defects. Finally, we relate our findings to other models known in other fields.

Research on Control Strategy of Microgrid Inverter Based on Virtual Synchronous Generator

2014 ◽  
Vol 529 ◽  
pp. 496-500 ◽  
Author(s):  
Xiang Chu Xu ◽  
Ling Zhu ◽  
Ben Feng Guo
Keyword(s):  
Control Strategy ◽  
Control Method ◽  
Synchronous Generator ◽  
Rotational Inertia ◽  
Simulink Simulation ◽  
Power Frequency ◽  
Output Characteristics ◽  
Frequency Controller ◽  
Virtual Synchronous Generator

In view of the conventional droop control method of inverter cannot fully meet the requirements of the microgrid operation,a new control strategy which is based on the traditional control method and combine with synchronous generator model is put forward, also known as VSG control strategy.AVSG model is establish, focusing on the design of the power frequency controller and excitation controller. The role of the rotational inertia and the power allocation problem of two VSGs in parallel networking system are verified through Matlab / Simulink simulation. The results show that, microgrid inverter based onVSG control strategy can simulate output characteristics of synchronous generator well and is conductive to microgrid operation

scholarly journals Crucial role of sidewalls in velocity distributions in quasi-two-dimensional granular gases

2004 ◽  
Vol 70 (4) ◽  
Author(s):  
J. S. van Zon ◽  
J. Kreft ◽  
Daniel I. Goldman ◽  
D. Miracle ◽  
J. B. Swift ◽  
...  
Keyword(s):  
Crucial Role ◽  
Granular Gases ◽  
Two Dimensional

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management

The power of norms to sway fused group members

2018 ◽  
Vol 41 ◽  
Author(s):  
Winnifred R. Louis ◽  
Craig McGarty ◽  
Emma F. Thomas ◽  
Catherine E. Amiot ◽  
Fathali M. Moghaddam
Keyword(s):  
Evolutionary Anthropology ◽  
Normative Systems ◽  
Violent Extremism ◽  
Identity Fusion ◽  
Group Members

AbstractWhitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.

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