Model of evaporation of kerosene droplets in the atmosphere and pollution of soil around the airfield
Journal Title: Вестник МГТУ - Year 2019, Vol 22, Issue 1
Abstract
Pollution of soils near airport territories is caused by formation and dispersion of kerosene droplets during its incomplete combustion in afterburner operation of the aircraft engine. With constant impact on the environment even small amounts of unburned fuel over decades of operation of airfields (primarily military), the contribution of this component to soil contamination becomes no less significant than with emergency discharges. The description of kerosene dropping is based on the fact that the exhaust gases of aircraft engines and drainage systems cannot condense, as they are at temperatures above the critical temperature for kerosene. To condense, they are to become vaporized. Cooling of exhaust gases and condensation of kerosene vapors occurs with a high level of air flow turbulence. As a result, gas-dynamic formations with different mass are formed reaching condensation temperatures, turning into drops of liquid kerosene. Taking into account the set of random processes occurring during turbulent cooling of kerosene, droplet size distribution is Gaussian. The constructed mathematical model of kerosene soil pollution near the airfield shows that environmentally hazardous pollution is observed at a distance of up to 100 m from the edge of the runway. During the study of the soils of the near-aerodrome territory of the Baltimor airfield (Voronezh), it has been determined that the nearest residential area is located 1.8 km from the runway, where the level of soil contamination with kerosene is determined below the MPC. In the southern direction from the airport at the distance of 300–1500 m there is a village with a predominant soil type – Chernozem; here kerosene accumulates, the MCL excess is exceeded by 4–12 times. A fairly complete agreement has been obtained between the calculated and experimental data (R = 0.81), despite the fact that the theoretical calculations did not take into account changes in the altitude of the aircraft flights.
Authors and Affiliations
O. V. Bazarsky, Zh. Yu. Kochetova
Keywords
Related Articles
- EP ID EP514381
- DOI 10.21443/1560-9278-2019-22-1-64-71
- Views 107
- Downloads 0
Experimental estimation of effective recombination coefficients in the D-region ionosphere at high latitudes during solar eclipses by the method of partial reflections
The photochemical theory of processes in the lower ionosphere is very complicated and up to now it is not completely developed. Therefore introduction of the effective coefficients determining the total speed of several...
Ore mineralization of gold-uranium occurrences Ozernoe and Lagernoe (Kuolayarvi structure, North Karelia)
Alkaline-carbonate metasomatites of fault zones are widely distributed within all Precambrian shields. Their studying has attracted the close attention of researchers in connection with the confinement of various concent...
Current infestation status of Atlantic salmon with Anisakis simplex larvae in the River Ponoi (the Murmansk region)
The infestation of Atlantic salmon with larvae of nematode Anisakis simplex has been studied in recreational catches in the River Ponoi of the Murmansk Region by using data from field research. The level and dynamics of...
The use of modern methods for complex studies of the hydrotechnical structures of the Barents Sea region
The Barents region hydrotechnical structures (HTS) as part of the bulk earth dams and levees tailings of mining enterprises in terms of requirements of the responsible entities have been considered. The brief review of e...
Lithological characteristics of the modern sediments of the Pechora Sea
The Pechora Sea is of great economic importance for the Russian Federation. Knowledge of the history of the shelf of the Russian Western Arctic seas is impossible without studying the modern processes of sedimentation an...