Numerical simulation of Dissolved Oxygen as a water quality indicator in artificial lagoons—Case? study El Gouna, Egypt

Dissolved oxygen (DO) is one of the most significant environmental indicators water quality. Preservation reasonable DO concentrations essential for a healthy aquatic life. In this research, numerical simulations were discussed using TELEMAC-WAQTEL- O 2 model. Firstly, model was verified by comparing its results to analytical solutions in different 1D and 2D cases considering pulse constant injections. Based on very good agreement between simulation scenarios, has proven ability be applied more complex cases. Consequently, investigate El Gouna artificial lagoons Egypt under effect weather conditions including tide, mean maximum wind temperatures. Investigating quality important monitor negative anthropogenic impacts protect nearby Red Sea coast. Negative effects effluents from desalination plant concentration brine discharges, discharge, injection times conditions. This study presents few systematic studies hydrodynamics issues. The show decrease affected high Further, lagoons’ hydrodynamic relevant impact concentrations, e.g., tide wave induced increase following sinusoidal wave. Also, winds affect propagation as low are obtained near inflow boundaries. outcomes demonstrate that depend hydrodynamics, DO’s production consumption rate tracer transport. polluted with flowing followed direction. Besides, quantities binary have minor lagoons. • Agreement TELEMAC-WAQTEL-O solution 2D. decreased when temperature increased. Tide created dissolved inversely proportional depths. Water area presented compared outflow values. Quantity time had dissolved. oxygen.