TY - JOUR
T1 - Checking the Sensitivity of Solute Advection- Dispersion Model to Reaction Coefficients and River Hydraulic Properties in the Process of Dissolved Oxygen Simulation
TT - بررسی حساسیت مدل انتقال- انتشار املاح به ضرایب واکنش و خصوصیات هیدرولیکی رودخانه در فرایند شبیهسازی غلظت اکسیژن محلول
JF - JSTNAR
JO - JSTNAR
VL - 23
IS - 3
UR - http://jstnar.iut.ac.ir/article-1-3549-en.html
Y1 - 2019
SP - 27
EP - 36
KW - Dissolved oxygen
KW - hydraulic parameters
KW - Zayandehrud
KW - Advection- Dispersion Equation
KW - MATLAB
N2 - Nowadays, environmental pollutions especially water pollution is increasingly developing. One of the problems of entering the pollutants to rivers is reduction in the concentration of river dissolved oxygen. In order to manage the water resources, amount of dissolved oxygen should be predicted. This study presents a novel equation for simulating the concentration of river dissolved oxygen by adding the oxygen production and consumption in the river factors to equation for transmission-diffusion of minerals in the soil. The resultant equation was separated in finite differential method and by using implicit pattern. Calculations were done by encodings in MATLAB software. In order to calibrate and confirm the dissolved oxygen model, data derived from Zayanderood River around Zob-Ahan factory of Isfahan and Mobarakeh Steel Complex was used. By using some data, coefficients of model were determined. Analyzing the sensitivity of model coefficients showed that aeration constant (Kr) had the most effect on predicting the model. Since depends on hydraulic parameters of river, sensitivity of depth and pace of river was studied and finally depth of river was introduced as the most sensitive variable.
M3 10.47176/jwss.23.3.37052
ER -