scholarly journals CFD Analysis of Indoor Chlorine Gas Dispersion Storage: Temperatures, Wind Velocities and Ventilation Effects Studies

2016 ◽  
Vol 16 (1) ◽  
pp. 1
Author(s):  
M. Safakar ◽  
S. Syafiie ◽  
R. Yunus
Keyword(s):  
Ground Level ◽  
Dense Gas ◽  
Human Beings ◽  
Potential Health ◽  
Gas Dispersion ◽  
Indoor Space ◽  
Hazardous Chemical ◽  
Chlorine Gas ◽  
Different Temperatures ◽  
Wind Velocities

The Chemical products factories encounter inherent environmental risks in the process. The indoor release of hazardous chemical gases that are heavier than the air is nowadays a special subject for scrutiny because the dense clouds of the gas have a tendency to insist on the ground level or near the human breath level, causing fatal injuries or other potential health threats to human beings. In this study, a computational fluid dynamics (CFD) code FLUENT was employed in order to model the accidental indoor dispersion of a dense gas (chlorine) from a small undetected leak in an indoor industrial environment. Furthermore, the effects of different temperatures, wind velocities and ventilation on diffusion of chlorine are investigated in this paper. Results of the simulations represented that the chlorine gas dispersion would behave like the liquid and currents on the floor. It was also found that the chlorine concentration above the ground level increased slowly. Showing the effects of various temperatures and wind on spreading the dense gas will help to better identify the potential risks. In this research, the effects of the environmental situations with the release and spread of chlorine in the indoor space were meticulously investigated.

scholarly journals Dense gas dispersion model development and testing for the Jack Rabbit II phase 1 chlorine release experiments

2018 ◽  
Vol 192 ◽  
pp. 218-240 ◽  
Author(s):  
Simon Gant ◽  
Jeffrey Weil ◽  
Luca Delle Monache ◽  
Bryan McKenna ◽  
Maria M. Garcia ◽  
...  
Keyword(s):  
Dispersion Model ◽  
Phase 1 ◽  
Model Development ◽  
Dense Gas ◽  
Gas Dispersion

IN-FLIGHT EXPOSURE TO COSMIC RADIATION ALONG SOME COMMERCIAL AIRLINE ROUTES TO AND FROM NIGERIA

2017 ◽  
Vol 15 (1) ◽  
pp. 57-69
Author(s):  
O O ALATISE ◽  
A A ADEPOJU
Keyword(s):  
Effective Dose ◽  
Radiation Protection ◽  
Cosmic Radiation ◽  
Ground Level ◽  
Radiation Doses ◽  
Human Beings ◽  
The Earth ◽  
Commercial Airline ◽  
Additional Level ◽  
Airline Crews

The study of “external” radiation called cosmic radiation that strikes the earth from anywhere beyond the atmosphere is of great importance in radiation protection. All human beings are exposed to an uncontrollable amount of cosmic radiation on the ground level. Those who travel in space, airline crews and frequent flyers are exposed to additional level of cosmic radiation during their trip but unfor-tunately many of them are not aware of this. This workcalculates the exposure of aircrews and fre-quent flyers to cosmic radiation during travel along some air routes to and from Nigeria. The effective dose was computed using a dedicated software CARI 6M, developed by US FAA.The study focuses on the significance of the in-flight exposure, assessment and estimation of in-flight exposure using the dedicated software and some ways of controlling the exposures so that airline crews and frequent flyers are not exposed to fatal levels of radiation.It was observed that the cosmic radiation doses re-ceived by passengers and crew members on board on flights from Lagos Nigeria to countries in Amer-ica were more than what they received en-route countries in Asia.

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