Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
권호 표지
DOI QR코드

DOI QR Code

Behavior of Gaseous Volatile Organic Compounds Considered by Density-Dependent Gas Advection

밀도차에 의해 발생하는 이송을 고려한 휘발성 유기화합물 가스의 거동

  • 이창수 (위덕대학교 BT학부) ;
  • 이영화 (경산대학교 건축 건설시스템공학부)
  • Published : 2002.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

A numerical model is investigated to predict a behavior of the gaseous volatile organic compounds and a subsurface contamination caused by them in the unsaturated zone. Two dimensional advective-dispersion equation caused by a density difference and two dimensional diffusion equation are computed by a finite difference method in the numerical model. A laboratory experiment is also carried out to compare the results of the numerical model. The dimensions of the experimental plume are 1.2m in length, 0.5m in height, and 0.05m in thickness. In comparing the result of 2 methods used in the numerical model with the one of the experiment respectively, the one of the advective-dispersion equation shows better than the one the diffusion equation.

Keywords

References

  1. 村岡浩爾, 1990, 最近の地下水汚染について, 日本土木學會論文集, 405/II-11, 282-288.
  2. Kueper, Band E. Frind, 1985, An overview of immiscible fingering in porous media, Jour. Contam. Hydrol., 2, 95-110.
  3. Lenhard, R. J., M. Oostrom, C. S. Simmons, and M. D. White, 1995, Investigation of density-dependent gas advection of trichloroethylene : experiment and model validation exercise, Jour. of Contam. Hydrol., 19, 47-67. https://doi.org/10.1016/0169-7722(94)00055-M
  4. Abriola, L. M. and G. F. Pinder, 1985, A multiphase approach to the mideling of porous media contamination by organic compounds, 1. Equation development, Water Resour. Res., 21-1, 11-18. https://doi.org/10.1029/WR021i001p00011
  5. Falta, R. W., I. Javandel, K. Pruess, and P. A. Witherspoon, 1989, Density-Driven flow of gas in the unsaturated zone due to the evaporation of volatile organic compounds, Water Resour. Res., 25-10, 2159-2169. https://doi.org/10.1029/WR025i010p02159
  6. Massmann, J. and D. F. Farrier, 1992, Effects of atmospheric pressures on gas transport in the vadose zone, Water Resour. Res., 28-3, 777-791. https://doi.org/10.1029/91WR02766
  7. Bear, J., 1972, Dynamics of fluids in porous media, Elservier, New York, 764pp.
  8. Frind, E. O., 1982, Seawater intrusion in continuous coastal aouifer-aquitard system, Adv. Water Resources, 18-5, 89-97.
  9. Brooks, R. H. and A. T. Corey, 1964, Hydraulic properties of porous media, Hydrol. Pap. 3, Colo. State Univ., Fort Collins, 27pp.
  10. Sleep, B. E. and J. F. Sykes, 1989, Modeling of transport of volatile organics in variably saturated media, Water Resour. Res., 25-1, 81-92. https://doi.org/10.1029/WR025i001p00081
  11. Bear, J., 1979, Hydraulics of groundwater, McGraw-Hill, New York, 567pp.
  12. Millington, R. J., and J. P. Quirk, 1961, Permeability of porous solids, Trans. Faraday Soc., 57, 1200-1207. https://doi.org/10.1039/tf9615701200
  13. 李昌洙, 石井義裕, 村岡浩爾, 1997, 有機鹽素化合物ガスの不飽和土壌に對する吸着を考慮した遅延現象について, 水工學論文集, 第41巻, 563-568.
  14. W. キンツェルバッハ [上田年比古監譯], 1990, パソコンによる地下水解析, 森北出版, 286pp.