Experimental evidence of significant temperature fluctuations in the plasma edge region of the TJ-I tokamak

1992 ◽  
Vol 69 (8) ◽  
pp. 1205-1208 ◽  
Author(s):  
C. Hidalgo ◽  
R. Balbín ◽  
M. A. Pedrosa ◽  
I. García-Cortés ◽  
M. A. Ochando
Keyword(s):  
Experimental Evidence ◽  
Temperature Fluctuations ◽  
Plasma Edge ◽  
Edge Region ◽  
Significant Temperature

Neutral Transport Analysis in Plasma Edge Region of the GAMMA-10 Central-Cell

2009 ◽  
Vol 55 (2T) ◽  
pp. 185-190
Author(s):  
Y. Higashizono ◽  
Y. Nakashima ◽  
M. Shoji ◽  
N. Nishino ◽  
S. Kobayashi ◽  
...  
Keyword(s):  
Central Cell ◽  
Plasma Edge ◽  
Edge Region ◽  
Transport Analysis

Balmer- Intensity and Particle Flux in Plasma Edge Region of LHD

2002 ◽  
Vol 42 (6-7) ◽  
pp. 616-621 ◽  
Author(s):  
M. Goto ◽  
S. Morita ◽  
LHD experiment group
Keyword(s):  
Particle Flux ◽  
Plasma Edge ◽  
Edge Region

Small-Scale Temperature Fluctuations in Perfused Tissue During Local Hyperthermia

1986 ◽  
Vol 108 (3) ◽  
pp. 246-250 ◽  
Author(s):  
J. W. Baish ◽  
P. S. Ayyaswamy ◽  
K. R. Foster
Keyword(s):  
Scaling Laws ◽  
Temperature Fluctuations ◽  
Small Scale ◽  
Adjacent Tissue ◽  
Local Hyperthermia ◽  
Thermal Equilibration ◽  
Scale Temperature ◽  
Tissue Region ◽  
Significant Temperature ◽  
Analytical Expressions

We develop analytical expressions (scaling laws) for the local temperature fluctuations near isolated and countercurrent blood vessels during hyperthermia. These scaling laws relate the magnitude of such fluctuations to the size of the heated region and to the thermal equilibration length of the vessels. A new equilibration length is identified for countercurrent vessels. Significant temperature differences are predicted between the vessels and the immediately adjacent tissue when the equilibration length is comparable to or longer than the size of the heated tissue region. Countercurrent vessels are shown to have shorter equilibration lengths and produce smaller temperature fluctuations than isolated vessels of the same size.

Stochastic magnetic and ambipolar electric fields in the plasma edge region of RFX

1996 ◽  
Vol 36 (4) ◽  
pp. 435-442 ◽  
Author(s):  
V Antoni ◽  
E Martines ◽  
M Bagatin ◽  
D Desideri ◽  
G Serianni
Keyword(s):  
Electric Fields ◽  
Plasma Edge ◽  
Edge Region

Development of a Partial Blockage Detection Algorithm through Temperature Fluctuation Analyses in a Liquid Metal Reactor

2006 ◽  
Vol 321-323 ◽  
pp. 1758-1761
Author(s):  
Seung Hwan Seong ◽  
Won Dae Jeon ◽  
Seop Hur ◽  
Seong O Kim
Keyword(s):  
Temperature Fluctuation ◽  
Early Stage ◽  
Temperature Fluctuations ◽  
Detection Algorithm ◽  
Significant Parameter ◽  
Eddy Simulation ◽  
Liquid Metal Reactor ◽  
Commercial Code ◽  
Large Eddy ◽  
Significant Temperature

If an assembly is partially blocked, the temperature in the upper plenum fluctuates at an early stage without a significant temperature increase. Therefore, the temperature fluctuation in the upper plenum can detect a partial blockage of an assembly. For developing the detection algorithm for a partial blockage, we numerically analyzed the temperature fluctuation in the upper plenum due to a partial blockage in an assembly. For analyzing the time dependent turbulence variables, the LES (Large Eddy Simulation) turbulence model in a commercial code was used. After analyzing the temperature fluctuations in the upper plenum, we studied the change of its characteristics according to the blocked conditions through some FFT analyses and statistical analyses. We found that the change of the skewness of the temperature fluctuation was the most significant parameter to detect a partial blockage and that its highest frequency is about 15Hz at 10cm beyond the exit of the assembly. Also, we have suggested that the resolution of the thermocouple should be less than 2 K in order to measure the fluctuated values of the temperature and that the response time of the thermocouple was less than 30ms.

Temperature fluctuations and plasma edge turbulence in the Brazilian tokamak TBR

1996 ◽  
Vol 3 (3) ◽  
pp. 971-977 ◽  
Author(s):  
R. M. Castro ◽  
M. V. A. P. Heller ◽  
I. L. Caldas ◽  
R. P. da Silva ◽  
Z. A. Brasilio ◽  
...  
Keyword(s):  
Temperature Fluctuations ◽  
Plasma Edge

scholarly journals Information technology in the study of the quality of concrete work

2019 ◽  
Vol 104 ◽  
pp. 01009
Author(s):  
Sergey Stradanchenko ◽  
Stanislav Maslennikov ◽  
Vladimir Dmitrienko ◽  
Irina Kokunko
Keyword(s):  
Compressive Strength ◽  
Regression Analysis ◽  
Regression Models ◽  
Information Technologies ◽  
Temperature Fluctuations ◽  
Significant Temperature ◽  
Compressive Strength Of Concrete ◽  
Air Penetration ◽  
Production Conditions

The article presents the results of using information technologies in the study of changes of concrete characteristics at different hardening conditions. The use of the developed temperature measurement complexes made it possible to control the conditions of hardening of monolithic concrete structures directly under production conditions. The results by means of using regression analysis are obtained, regression models of the dependence of the compressive strength of concrete on time and hardening temperature are determined. A significant decrease in compressive strength and resistance to air penetration of concrete samples during their storage under conditions of significant temperature fluctuations has been established.

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