| Title:
|
The dispersion of gas exhalations and the problem of distribution of new sources on a dry hilly surface (English) |
| Author:
|
Tran, Dien Hien |
| Language:
|
English |
| Journal:
|
Aplikace matematiky |
| ISSN:
|
0373-6725 |
| Volume:
|
31 |
| Issue:
|
4 |
| Year:
|
1986 |
| Pages:
|
257-269 |
| Summary lang:
|
English |
| Summary lang:
|
Russian |
| Summary lang:
|
Czech |
| . |
| Category:
|
math |
| . |
| Summary:
|
The process of gas exhalations in the lower layer of the atmosphere and the problem of distribution of new sources of exhalations in a hilly terrain are studied. Among other, the following assumptions are introduced: (1) the terrain is a hilly one, (2) the exhalations enter a chemical reaction with the atmosphere, (3) the process is stationary, (4) the vector of wind velocity satisfies the continuity equation. The mathematical formulation of the problem then is a mixed boundary value problem for an elliptic equation with the given distribution on its righthand side. It is shown that the problem has a unique "very weak" solution which is sufficiently smooth if so are the coefficients of diffusion and the components of the wind velocity vector. Futher, the problem of distribution of new sources of exhalations is discussed and a method of calculation of its solution is suggested. (English) |
| Keyword:
|
dispersion of gas exhalations |
| Keyword:
|
atmosphere over a hilly terrain |
| Keyword:
|
chemical reaction |
| Keyword:
|
boundary value problem |
| Keyword:
|
elliptic equation |
| Keyword:
|
distribution of exhalations |
| Keyword:
|
existence |
| Keyword:
|
uniqueness |
| Keyword:
|
regularity |
| Keyword:
|
very weak solution |
| MSC:
|
35J25 |
| MSC:
|
76N99 |
| idZBL:
|
Zbl 0616.76089 |
| idMR:
|
MR0854320 |
| DOI:
|
10.21136/AM.1986.104205 |
| . |
| Date available:
|
2008-05-20T18:30:13Z |
| Last updated:
|
2020-07-28 |
| Stable URL:
|
http://hdl.handle.net/10338.dmlcz/104205 |
| . |
| Reference:
|
[1] M. E. Berliand: Present problem of the atmospherical diffusion and the air pollution.Leningrad (1975) (in Russian). |
| Reference:
|
[2] M. E. Berliand, coll.: Optimal distribution of the exhalation sources of the air pollution.Trudy GGO, N. 325, (1975), 3-25. |
| Reference:
|
[3] A. Kufner O. John, S. Fučík: Function spaces.Academia, Praha (1973). |
| Reference:
|
[4] M. Hino: Computer experiment on smoke diffusion over a complicated topography.J. Atm. Environm 2, (1968) 541-558. 10.1016/0004-6981(68)90063-2 |
| Reference:
|
[5] O. A. Ladyzhenskaja: Boundary value problems of the mathematical physics.Moscow (1973) (in Russian). |
| Reference:
|
[6] O. A. Ladyzhenskaja, N. N. Urаľсеvа: Linear and Quasilinear Equations of Elliptic type.Academic Press, New York (1968). |
| Reference:
|
[7] G. I. Marchuk: Mathematical modelling in the problem of environment.Moscow (1982) (in Russian). Zbl 0493.90001, MR 0681121 |
| Reference:
|
[8] J. Nečas: Les methodes directes en theorie des equations elliptiques.Praha (1967). MR 0227584 |
| Reference:
|
[9] Tran Dien Hien: The Dirichlet problem in the dispersion of gas exhalations over a wet hilly surface.CMUC 4 (12). (1984), 459-471. Zbl 0558.35024, MR 0775564 |
| Reference:
|
[10] O. G. Sutton: Micrometeorology.Mc Graw Hill, London (1952). |
| Reference:
|
[11] J. Stará M. Tenčlová J. Bubník S. Fučík O. John: Gas exhalation and its calculation. (Part 1).Apl. mat. 26 (1981), 30-44. MR 0602400 |
| . |
