Experimental investigation of the influence of nonlinear effects on resonant microwave absorption in inhomogeneous plasmas

1978 ◽  
Vol 21 (11) ◽  
pp. 1171-1174
Author(s):  
V. S. Bazhanov ◽  
G. A. Markov
Keyword(s):  
Experimental Investigation ◽  
Microwave Absorption ◽  
Nonlinear Effects

Experimental investigation of temperature influence on nonlinear effects in microstructured fibers

2015 ◽  
Author(s):  
Z. Holdynski ◽  
M. Jozwik ◽  
Michal Murawski ◽  
L. Ostrowski ◽  
P. Mergo ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Nonlinear Effects ◽  
Temperature Influence ◽  
Microstructured Fibers

Experimental Investigation of the Nonlinear Effects on the Statistics of Vertical Motions and Loads of a Containership in Irregular Waves

2004 ◽  
Vol 48 (02) ◽  
pp. 148-167 ◽  
Author(s):  
N. Fonseca ◽  
C. Guedes Soares
Keyword(s):  
Experimental Data ◽  
Experimental Investigation ◽  
Probability Distributions ◽  
Nonlinear Behavior ◽  
Nonlinear Effects ◽  
Rayleigh Distribution ◽  
Irregular Waves ◽  
Cross Sectional ◽  
Wave Heights ◽  
Vertical Accelerations

The paper presents the results of an experimental investigation of the nonlinear effects on the vertical motions and loads on a containership model advancing in irregular waves. The experimental data are compared with numerical results from a nonlinear time domain strip method. The tests were carried out in a seakeeping tank using three sea states with significant wave heights of 4.2 m, 6.1 m, and 9.9 m, thus including very severe conditions. The measured responses include the absolute and relative motions, vertical accelerations, and cross-sectional loads at midship and ¼ Lpp from the forward perpendicular. The statistics of the experimental records demonstrate partly the nonlinear behavior of the responses, especially of the structural loads. The probability distributions of the positive and negative peaks show that the heave and pitch motions are only slightly asymmetric and their distributions compare well with the Rayleigh distribution. The vertical loads present distributions of peaks that are highly asymmetric and deviate from the Rayleigh distribution. Comparisons between simulated results and experimental data show that the numerical model is able to represent the nonlinear characteristics of the responses.

Experimental Investigation of the Nonlinear Effects on the Vertical Motions and Loads of a Containership in Regular Waves

2004 ◽  
Vol 48 (02) ◽  
pp. 118-147 ◽  
Author(s):  
N. Fonseca ◽  
C. Guedes Soares
Keyword(s):  
Experimental Investigation ◽  
Wave Amplitude ◽  
Nonlinear Effects ◽  
Wave Frequency ◽  
Experimental Program ◽  
Regular Waves ◽  
Cross Sectional ◽  
Nonlinear Characteristics ◽  
Time Histories ◽  
Vertical Accelerations

The nonlinear vertical responses of a containership advancing in regular waves are investigated experimentally. The paper presents the results of an experimental program carried out in a seakeeping tank with a model of the ITTC S-175 containership in head regular waves. All the wave frequency ranges of interest were tested, and for each wave frequency several wave amplitudes were used ranging from small to large amplitude. In this way the influence of the wave amplitude on the nonlinear characteristics of the responses was assessed. The measured responses include the absolute and relative motions, vertical accelerations, and cross-sectional loads at midship and ¼ Lpp from the forward perpendicular. Strong nonlinear effects were detected, especially on the loads, which can be identified by the variation of the transfer function with the wave amplitude, the asymmetry of the time histories, and the presence of higher harmonics.

Experimental investigation of coherent parametric microwave absorption in magnetized inhomogeneous plasma

1998 ◽  
Vol 40 (2) ◽  
pp. 215-231 ◽  
Author(s):  
V I Arkhipenko ◽  
V N Budnikov ◽  
E Z Gusakov ◽  
V A Pisarev ◽  
L V Simonchik
Keyword(s):  
Experimental Investigation ◽  
Microwave Absorption ◽  
Inhomogeneous Plasma
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