scholarly journals Strong turbulence for vibrating plates: Emergence of a Kolmogorov spectrum

2019 ◽  
Vol 4 (6) ◽  
Author(s):  
Gustavo Düring ◽  
Christophe Josserand ◽  
Giorgio Krstulovic ◽  
Sergio Rica
Keyword(s):  
Kolmogorov Spectrum ◽  
Strong Turbulence ◽  
Vibrating Plates

A phenomenological theory of drift wave type plasma turbulence

1979 ◽  
Vol 21 (3) ◽  
pp. 423-429 ◽  
Author(s):  
Amiya K. Sen
Keyword(s):  
Phenomenological Theory ◽  
Plasma Turbulence ◽  
Magnetized Plasma ◽  
Wave Type ◽  
Hydrodynamic Turbulence ◽  
Drift Wave ◽  
Kolmogorov Spectrum ◽  
Strong Turbulence

A phenomenological theory of drift type turbulence in inhomogeneous magnetized plasma is developed in the spirit of the Kolmogorov spectrum of hydrodynamic turbulence. We model the spectrum in terms of subspectra: production, equilibrium and dissipation. Different nonlinearities and either weak or strong turbulence characterize different subspectra.

BER performance analysis of FSO using hybrid-SIM technique with APD receiver over weak and strong turbulence channels

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Rajat Kumar Giri
Keyword(s):  
Performance Improvement ◽  
System Performance ◽  
Avalanche Photodiode ◽  
Free Space Optical ◽  
Error Performance ◽  
Strong Turbulence ◽  
Meijer G Function ◽  
Hermite Approximation ◽  
Ber Performance ◽  
Better Than

Abstract In this paper, a hybrid-subcarrier-intensity-modulation (hybrid-SIM) technique for the performance improvement of free-space-optical (FSO) communication system has been proposed. Subsequently, for further error performance improvement, avalanche photodiode (APD) based receiver is used in the proposed system. The system performance is analyzed at various atmospheric turbulence levels over weak and strong turbulence channels. The bit error rate (BER) is theoretically derived using Gauss–Hermite approximation and Meijer-G function and it is simulated in the MATLAB environment. The simulation result shows that the BER performance of hybrid-SIM is better than BPSK-SIM technique irrespective of the channel types and also the significant BER performance improvement is observed by APD receiver.

Strong turbulence accelerates sediment nitrification-denitrification for nitrogen loss in shallow lakes

2020 ◽  
pp. 143210
Author(s):  
Lin Zhu ◽  
Wenqing Shi ◽  
Jian Zhou ◽  
Jianghua Yu ◽  
Lingwei Kong ◽  
...  
Keyword(s):  
Shallow Lakes ◽  
Nitrogen Loss ◽  
Strong Turbulence

Iterative approach to strong turbulence theory

1980 ◽  
Vol 23 (7) ◽  
pp. 1301 ◽  
Author(s):  
Georg Knorr ◽  
Michael Mond
Keyword(s):  
Turbulence Theory ◽  
Iterative Approach ◽  
Strong Turbulence

Rayleigh-Ritz Analysis of Vibrating Plates Based on a Class of Eigenfunctions

2009 ◽  
Author(s):  
Giuseppe Catania ◽  
Silvio Sorrentino
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Boundary Conditions ◽  
Linear Combination ◽  
Equation Of Motion ◽  
Extensive Literature ◽  
Shape Functions ◽  
Element Analysis ◽  
Vibrating Plates ◽  
General Basis

In the Rayleigh-Ritz condensation method the solution of the equation of motion is approximated by a linear combination of shape-functions selected among appropriate sets. Extensive literature dealing with the choice of appropriate basis of shape functions exists, the selection depending on the particular boundary conditions of the structure considered. This paper is aimed at investigating the possibility of adopting a set of eigenfunctions evaluated from a simple stucture as a general basis for the analysis of arbitrary-shaped plates. The results are compared to those available in the literature and using standard finite element analysis.

Visualization of nodes and antinodes in vibrating plates

1968 ◽  
Vol 8 (5) ◽  
pp. 225-231 ◽  
Author(s):  
C. R. Hazell ◽  
R. D. Niven
Keyword(s):  
Vibrating Plates

Saturation of optical scintillation by strong turbulence*

1974 ◽  
Vol 64 (2) ◽  
pp. 148 ◽  
Author(s):  
S. F. Clifford ◽  
G. R. Ochs ◽  
R. S. Lawrence
Keyword(s):  
Strong Turbulence ◽  
Optical Scintillation
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