Liquid lens-based optical sectioning tomography for three-dimensional flame temperature measurement

Fuel ◽  
2017 ◽  
Vol 196 ◽  
pp. 550-563 ◽  
Author(s):  
Chuanlong Xu ◽  
Wenchao Zhao ◽  
Jianghai Hu ◽  
Biao Zhang ◽  
Shimin Wang
Keyword(s):  
Temperature Measurement ◽  
Flame Temperature ◽  
Three Dimensional ◽  
Optical Sectioning ◽  
Liquid Lens

Numerical Study on the Effect of Inner Tube Position on Heat Transfer Process in Self-Recuperative Radiant Tube

2011 ◽  
Vol 228-229 ◽  
pp. 676-680 ◽  
Author(s):  
Ye Tian ◽  
Xun Liang Liu ◽  
Zhi Wen
Keyword(s):  
Heat Transfer ◽  
Transfer Process ◽  
Numerical Study ◽  
Flame Temperature ◽  
Three Dimensional ◽  
Mathematic Model ◽  
Heat Transfer Process ◽  
Bulk Temperature ◽  
Radiant Tube ◽  
Peak Value

A three-dimensional mathematic model is developed for a 100kw single-end recuperative radiant tube and the simulation is performed with the CFD software FLUENT. Also it is used to investigate the effect of distance between combustion chamber exit and inner tube on heat transfer process. The results suggest that the peak value of combustion flame temperature drops along with the increasing of distance, which leads to low NOX discharging. Also radiant tube surface bulk temperature decreases, which causes radiant tube heating performance losses.

scholarly journals In-Situ Local Temperature Measurement During Three-Dimensional Direct Laser Writing

CLEO: 2013 ◽  
2013 ◽  
Author(s):  
Jonathan Mueller ◽  
Joachim Fischer ◽  
Yatin Jadavji Mange ◽  
Thomas Nann ◽  
Martin Wegener
Keyword(s):  
Temperature Measurement ◽  
Three Dimensional ◽  
Local Temperature ◽  
Direct Laser Writing ◽  
Laser Writing ◽  
Direct Laser

Computer-derived image compositing

1981 ◽  
Vol 51 (1) ◽  
pp. 84-89 ◽  
Author(s):  
R. J. Wall ◽  
S. S. Sobin ◽  
M. Karspeck ◽  
R. G. Lindal ◽  
H. M. Tremer ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Digital Analysis ◽  
Two Dimensional ◽  
Optical Sectioning ◽  
Composite Image ◽  
Image Compositing

A computer-derived composite image is obtained of the details contained in successive photomicrographs taken by optical sectioning of the collagen networks in the pulmonary interalveolar wall. Three-dimensional information is therefore contained in a two-dimensional portrayal, providing a basis for computer digital analysis otherwise not readily available.

Soft Sensor for Flame Temperature Measurement and IoT based Monitoring in Power Plants

2018 ◽  
Vol 5 (4) ◽  
pp. 10755-10762 ◽  
Author(s):  
K. Sujatha ◽  
Nallamilli.P.G Bhavani ◽  
Su-Qun Cao ◽  
K.S. Ram Kumar
Keyword(s):  
Temperature Measurement ◽  
Power Plants ◽  
Flame Temperature ◽  
Soft Sensor

Uncertainty Evaluation of the Rod Withdrawal at Power Accident Analysis Including 3D Neutron Kinetics

2012 ◽  
Author(s):  
Tomislav Bajs ◽  
Alessandro Petruzzi ◽  
Davor Grgić
Keyword(s):  
Temperature Measurement ◽  
Temperature Rise ◽  
Power Level ◽  
Three Dimensional ◽  
Nucleate Boiling ◽  
Coolant Temperature ◽  
System Response ◽  
Safety Margins ◽  
Control Assembly ◽  
System Variables

A continuous uncontrolled Rod Cluster Control Assembly (RCCA) bank withdrawal at power belongs to group of Reactivity Initiated Accidents (RIA). It will cause an increase in core heat flux and a reactor coolant temperature rise. Unless terminated by manual or automatic action, the power mismatch and resultant coolant temperature rise could eventually result in departure from nucleate boiling (DNB) and/or fuel centreline melt. The accident can be DNBR or overpower limiting accident depending on initial power level and rate and amount of reactivity addition. The Rod Withdrawal At Power (RWAP) accident was analyzed for NPP Krško to evaluate possible Resistance Temperature Detectors (RTD) bypass removal and introduction of thermowell for the average temperature measurement. The influence of different coolant temperature measurement delays to related protection system response and limiting system variables was studied first using point kinetics model as implemented in RELAP5 code. The selected scenario (maximum insertion rate with rods in manual mode) has been re-calculated using RELAP5/PARCS coupled code. Core wide departure from nucleate boiling ratio (DNBR) calculation has been performed at the end of the coupled code calculation using COBRA based model to determine minimum DNBR for hot channel. In order to assess available safety margins following such accident CIAU methodology has been applied to evaluate the uncertainty of RELAP5 analysis and modified CIAU/TN methodology to evaluate uncertainty of the three-dimensional neutronics/thermal-hydraulics calculations. Differences between system and coupled code results and uncertainties is discussed.

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