Air concentration and bubble characteristics downstream of a chute aerator

2016 ◽  
Vol 87 ◽  
pp. 156-166 ◽  
Author(s):  
Ruidi Bai ◽  
Faxing Zhang ◽  
Shanjun Liu ◽  
Wei Wang
Keyword(s):  
Air Concentration ◽  
Bubble Characteristics

Fission Gas Bubbles in Fractured UO2

1968 ◽  
Vol 26 ◽  
pp. 286-287
Author(s):  
O. M. Katz
Keyword(s):  
Electron Microscopy ◽  
Thermal Gradient ◽  
Gas Bubbles ◽  
Inert Gas ◽  
Thermal Gradients ◽  
Fission Gas ◽  
Beam Heating ◽  
Limited Application ◽  
Bubble Characteristics ◽  
Electron Beam Heating

The swelling of irradiated UO2 has been attributed to the migration and agglomeration of fission gas bubbles in a thermal gradient. High temperatures and thermal gradients obtained by electron beam heating simulate reactor behavior and lead to the postulation of swelling mechanisms. Although electron microscopy studies have been reported on UO2, two experimental procedures have limited application of the results: irradiation was achieved either with a stream of inert gas ions without fission or at depletions less than 2 x 1020 fissions/cm3 (∼3/4 at % burnup). This study was not limited either of these conditions and reports on the bubble characteristics observed by transmission and fractographic electron microscopy in high density (96% theoretical) UO2 irradiated between 3.5 and 31.3 x 1020 fissions/cm3 at temperatures below l600°F. Preliminary results from replicas of the as-polished and etched surfaces of these samples were published.

Different nanofluids effect on bubble characteristics at the isothermal bubble column

2021 ◽  
Author(s):  
Ahmad Dousti ◽  
Hamed Gharedaghi ◽  
Pedram Hanafizadeh ◽  
Mehdi Ashjaee
Keyword(s):  
Bubble Column ◽  
Bubble Characteristics

scholarly journals Bubble Characteristics in the Momentum Region of Air-Water Vertical Bubbling Jet.

1991 ◽  
Vol 31 (9) ◽  
pp. 952-959 ◽  
Author(s):  
Manabu Iguchi ◽  
Kentarou Nozawa ◽  
Zen-ichiro Morita
Keyword(s):  
Bubble Characteristics ◽  
Momentum Region

scholarly journals Radiation Dose Calculations for a Hypothetical Accident in Xianning Nuclear Power Plant

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Bo Cao ◽  
Junxiao Zheng ◽  
Yixue Chen
Keyword(s):  
Radiation Dose ◽  
Nuclear Power ◽  
Atmospheric Dispersion ◽  
Harmful Effect ◽  
Atmospheric Stability ◽  
Dispersion Modeling ◽  
Dose Calculations ◽  
Air Concentration ◽  
The Public ◽  
Ground Deposition

Atmospheric dispersion modeling and radiation dose calculations have been performed for a hypothetical AP1000 SGTR accident by HotSpot code 3.03. TEDE, the respiratory time-integrated air concentration, and the ground deposition are calculated for various atmospheric stability classes, Pasquill stability categories A–F with site-specific averaged meteorological conditions. The results indicate that the maximum plume centerline ground deposition value of1.2E+2 kBq/m2occurred at about 1.4 km and the maximum TEDE value of1.41E-05 Sv occurred at 1.4 km from the reactor. It is still far below the annual regulatory limits of 1 mSv for the public as set in IAEA Safety Report Series number 115. The released radionuclides might be transported to long distances but will not have any harmful effect on the public.

Bubble characteristics and aerosol formation in electrowinning cells

1985 ◽  
Vol 15 (4) ◽  
pp. 581-590 ◽  
Author(s):  
A. Papachristodoulou ◽  
F. R. Foulkes ◽  
J. W. Smith
Keyword(s):  
Aerosol Formation ◽  
Bubble Characteristics
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