Experimental and Numerical Study of Open Channel Flow with T-Section Artificial Bed Roughness

Experimental and numerical studies have been conducted on the effects of bed roughness elements such as cubic T-section that are regularly half-channel arrayed one side river turbulent flow characteristics erosion downstream elements. The experimental study has done for two types (cubic shape) to effect these velocity profile with respect different water discharges depths. A comparison between artificial showed increased in smooth from decrease rough it compared case when a is used. By comparing results element shapes, can be notices more effective shape both sides channel. method using Computational Fluid Dynamic (CFD) method. validation CFD model carried out specific discharge depth. indicated distribution profiles shown very good agreement manning coefficients studies. range errors calculated Root Mean Square Error (RMSE) approach, which found RMSE approximately equal 1 about 1.5 sides. Furthermore, influence under tides investigated method, commonly happened Shat al-Arab south Iraq. show tide reverse Since region increase normal river.