Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Khaled S. M. Essa"'
Autor:
Khaled S. M. Essa, Soad M. Etman, Maha S. El-Otaify, M. Embaby, Ahmed M. Mosallem, Ahmed S. Shalaby
Publikováno v:
Beni-Suef University Journal of Basic and Applied Sciences, Vol 10, Iss 1, Pp 1-11 (2021)
Abstract In this report, we solved the advection–diffusion equation under pollutants deposition on the ground surface, taking wind speed and vertical diffusion depend on the vertical height. Also, we estimated a simple diffusion model from point so
Externí odkaz:
https://doaj.org/article/bcc6a305bb2d4e1d877dad796a4fb85a
Publikováno v:
Atmospheric Science Letters, Vol 22, Iss 9, Pp n/a-n/a (2021)
Abstract Three‐dimensional advection–diffusion equation with steady state was evaluated from continuous point source taking the vertical and crosswind eddy diffusivities as power law of vertical height and downwind distance with constant wind spe
Externí odkaz:
https://doaj.org/article/308436bb22044e528a2457bd084f2836
Publikováno v:
Revista Brasileira de Meteorologia, Vol 29, Iss 3, Pp 331-337 (2014)
An analytical solution of the three dimensional advection-diffusion equations has been formulated to simulate the dispersion of pollutants in the planetary boundary layer. The solution is based on the assumption that the concentration distribution of
Externí odkaz:
https://doaj.org/article/ed815ff5e7d641eaaee0ed11895a501d
Studying the Effect of Two Analytical Solutions of Advection-Diffusion Equation on Experimental Data
Publikováno v:
Pure and Applied Geophysics.
In this article, two proposed analytical model solutions of the steady-state advection-diffusion equation were carried out using the technique of advection diffusion multilayer method (ADMM), variable separation technique, Fourier transform, square c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89016aa8706cd66bb9b999378394206c
https://doi.org/10.1007/s00024-023-03267-1
https://doi.org/10.1007/s00024-023-03267-1
Autor:
Khaled S. M. Essa, H. M. Taha
Publikováno v:
MAUSAM. 72:905-914
On this work, contrast between two analytical and numerical solutions of the advection-diffusion equation has been completed. We use the method of separation of variables, Hankel transform and Adomian numerical method. Also, Fourier rework, and squar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6461fe4680af38e051af49aaa4eb0b0
https://doi.org/10.54302/mausam.v72i4.3557
https://doi.org/10.54302/mausam.v72i4.3557
Autor:
A. S. Shalaby, M. Embaby, Maha S. El-Otaify, Soad M. Etman, Khaled S. M. Essa, Ahmed M. Mosallem
Publikováno v:
Beni-Suef University Journal of Basic and Applied Sciences, Vol 10, Iss 1, Pp 1-11 (2021)
In this report, we solved the advection–diffusion equation under pollutants deposition on the ground surface, taking wind speed and vertical diffusion depend on the vertical height. Also, we estimated a simple diffusion model from point source in a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f01232a5a89d6d29d164b98b9faed2b1
https://doaj.org/article/bcc6a305bb2d4e1d877dad796a4fb85a
https://doaj.org/article/bcc6a305bb2d4e1d877dad796a4fb85a
Publikováno v:
Pure and Applied Geophysics. 177:4545-4557
Hankel transform was employed to solve the two-dimensional steady state advection–diffusion equation considering a continuous point source with vertical eddy diffusivity as a power law of vertical height and downwind distance, also, taking wind spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::002c0f5bd53c5b30f410c3a35823d701
https://doi.org/10.1007/s00024-020-02496-y
https://doi.org/10.1007/s00024-020-02496-y
Publikováno v:
Arab Journal of Nuclear Sciences and Applications. 53:87-97
The vertical fraction variation of eddy diffusivity was taking into consideration in the dispersion of pollutants from a point source. A power-law profile was used to describe the variation of wind speed and vertical eddy diffusivity with height z ab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7acde96778fd950db09573742caf0350
https://doi.org/10.21608/ajnsa.2020.15115.1241
https://doi.org/10.21608/ajnsa.2020.15115.1241
Publikováno v:
Open Journal of Air Pollution. :27-35
In this work we used the Gaussian plume model to calculate the actual maximum ground level concentration (MGLC) of air pollutant and its downwind location by using different systems of dispersion parameters and for different stack heights. An approxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfe2f73cff9fa68639202ed0eb164ec4
https://doi.org/10.4236/ojap.2020.92003
https://doi.org/10.4236/ojap.2020.92003
Publikováno v:
Atmospheric Science Letters, Vol 22, Iss 9, Pp n/a-n/a (2021)
Three‐dimensional advection–diffusion equation with steady state was evaluated from continuous point source taking the vertical and crosswind eddy diffusivities as power law of vertical height and downwind distance with constant wind speed to get
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::409d79c7f22e20f2d66acdae0f0193c8
https://doaj.org/article/308436bb22044e528a2457bd084f2836
https://doaj.org/article/308436bb22044e528a2457bd084f2836