SIMULATION OF LAMINAR FORCED CONVECTION HEAT TRANSFER AND FLUID FLOW OVER A BACKWARD FACING STEP WITH OBSTACLE USING (SIO ) NANOPARTICLES. UTJES [Internet]. 2015 Aug. 1 [cited 2024 Apr. 29];6(2):80-92. Available from: https://jeng.utq.edu.iq/index.php/main/article/view/79