“Large Eddy Simulation For Flow Around Buildings,” Eights International Congress of Fluid Dynamics and Propulsion ICFDP8, Dec. , Sharm Elshiekh, Egypt. " Computational Study of Natural Ventilation" , Journal of Wind Engineering and Industrial Aerodynamics, Vol. 82 , 1999, PP.49-68. " Effects of Wick Configuration on the Performance of Gravity Assisted Heat Pipe" Tenth International Conference on Mechanical Power Engineering, Assiut, Egypt. " Effect of Gust on Wind Flow Around a Low Rise Building", Fifth International Conference on Fluid Mechanics, Cairo, Egypt. " An Experimental Investigation for the Effect of Rotor Wake on Flow within Stator Passage, " Fifth International Conference on Fluid Mechanics, Cairo, Egypt. " Experimental Investigations of Turbulent Flow Around Airfoil Sections," The Eighth International Conference for Mechanical Power Engineering, Alexandria, April . " Finite Element Model for Buoyancy Driven Cavity Flow," Journal of Applied and Engineering Sciences, Faculty of Engineering, Cairo University, Vol.39. " Effect of Curvature on Turbulence Levels in the Wake of Airfoil Sections, " Fourth International Conference on Fluid Mechanics, Alexandria Egypt, April. " A Study of Wake Generated Unsteadiness in a Channel Flow Part I : Mean Flow", International Journal of Engineering Fluid Mechanics, Vol. 4, No. 1, PP. 71-90. R. R. Mankbadi and S. S. Ayad " Chemiluminescence- A Diagnostic Technique for Internal Combustion Engines, " ASME Winter Annual Meeting, Dallas, Texas, Nov. 25-30, FED-Vol. 100. " A Numerical Model for Wind Flows above Fire Areas, " Published in a bound volume HTD Vol. 73, ASME Heat Transfer Conference, Pittsburgh, Pennsylvania, August. " Wind Tunnel Investigations of Natural Ventilation, " ASCE, Journal of Transportation, Vol. 110, no. 1, PP. 67-79. " Numerical Study of the Performance of Tornado-Type Wind Energy Systems", AIAA Journal of Energy, Vol. 7, no. 2, 1983, PP. 134-140. " A Numerical Model for the Flow Within the Tower of Tornado-Type Wind Energy System, " ASME Journal of Solar Energy Engineering, Vol.103, no. 4. , PP.299-305. Numerical Study on Turbine Wakes in Wind Farms AIAA Propulsion and Energy Forum, Cincinati, Ohio, 9-11 July 2018 Session on Wind and Solar Energy Generation EERE-02, THE EFFECT OF TIP END-BLADE GEOMETRY ON THE AXIAL FANS PERFORMANCE Presented at the 11th International Conference on Fluid Dynamics ICFD11 -19-21 Dec 2013 An Experimental Study of the Near Wake of Horizontal Axis Wind Turbines 9th ISFFM Arlington, Virginia, April 14 to 17, 2015 Computational Study of Natural Ventilation