scholarly journals Studying the variation of eddy diffusivity on the behavior of advection-diffusion equation

2018 ◽  
Vol 7 (1) ◽  
pp. 10-14
Author(s):  
Khaled Sadek Mohamed Essa ◽  
Aziz Nazer Mina ◽  
Hany Saleh Hamdy ◽  
Fawzia Mubarak ◽  
Ayman Ali khalifa
Keyword(s):  
Diffusion Equation ◽  
Eddy Diffusivity ◽  
Advection Diffusion Equation ◽  
Advection Diffusion

scholarly journals Comparison between two analytical solutions of advection-diffusion equation using separation technique and Hankel transform

MAUSAM ◽  
2021 ◽  
Vol 72 (4) ◽  
pp. 905-914
Author(s):  
KHALED S. M. ESSA ◽  
H. M. TAHA
Keyword(s):  
Wind Speed ◽  
Diffusion Equation ◽  
Numerical Solutions ◽  
Separation Of Variables ◽  
Eddy Diffusivity ◽  
Hankel Transform ◽  
Advection Diffusion Equation ◽  
Advection Diffusion ◽  
Information Sets ◽  
Vertical Eddy Diffusivity

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 square complement methods has been used to clear up the combination. The existing version is validated with the information sets acquired at the Egyptian Atomic Energy Authority test of radioactive Iodine-135 (I135) at Inshas in unstable conditions. On this model the wind speed and vertical eddy diffusivity are taken as characteristic of vertical height in the techniques and crosswind eddy diffusivity as function in wind speed. These values of predicted and numerical concentrations are comparing with the observed data graphically and statistically.

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