“Effects of free-stream turbulence on turbulent boundary layers with convective heat transfer,” 7th Symposium on turbulent shear flows, Stanford University. “ Modeling the sediment transport in non-circular ducts with a two-equation model of turbulence,” Int. Symposium on sediment transport modeling, New Orleans- Louisiana. “A fine tuning of a two equation turbulence model to account for secondary flows,” Proceeding15th Conference for statistics and computer science, Ain Shams Univ., Cairo, pp. 419-427 “A two equation model for predicting two-dimensional rotating flow,” AME 4th Conference, Military Tech. College, Cairo, pp. 69-85 “The effect of aspect ratio of rectangular ducts on turbulence-driven secondary motion,” Journal of the faculty of Eng., Cairo University, Cairo, Vol. 37, part 4, pp. 1087-1100. “ Prediction of turbulent flows through rough square ducts” Engineering Research Bulletin, Faculty of Eng. & Tech. Mattaria, Helwan University, Vol. 4 ” Large Eddy Simulation for Fully Developed Flow in a square Duct.” ASME 1997 Fluid Engineering Division, Summer Meeting, (FEDSM97), Vancouver, British Columbia, Canada ”Numerical Prediction of Turbulent Heat transfer in a Rotating Square Duct with Non-linear k- model” Eleventh Symposium of Turbulent Shear Flows, September 8-11, 1997. Institut National Polytechnique, Universite Joseph Fourier, Grenoble, France ”Numerical Prediction of Convective Heat Transfer for Turbulent Flow in a Square Duct with Non-linear k- Model” ASME 1997 Fluid Engineering Division, Summer Meeting, (FEDSM97), British Columbia, Canada “Turbulent Flow and Heat Transfer in Rotating Non-circular Ducts with Non-linear k- Model.” AIAA 36th Aerospace Science Meeting & Exhibit, Reno, NV, USA “Comparison between the results of Large Eddy Simulation and k- Model for Straight Non-circular Ducts.” Proceedings of The 3rd ASME/JSME Joint Fluids Engineering Conference, San Francisco, California, USA “Utilization of Turbulence Modeling for Predicting Convective Heat Transfer of Turbulent Boundary layer” Engineering Research Bulletin, Faculty of Eng., Mansoura University. ”Effect of cooling system on heat transfer coefficient during condensation of saturated steam inside horizontal tube” Al-Azhar Engineering, 6h International Conference, Cairo, Egypt “Experimental study of the effect of longitudinal oscillations on free convection from a heated vertical plate.” Al-Azhar Engineering, 6h International Conference, Cairo, Egypt. “Reynolds number effects on the structure of two=dimensional turbulent channel flow”, Engineering Research Journal, Helwan university, Faculty of engineering, Mataria, Cairo, Egypt. “The effect of free-stream turbulence on turbulent boundary layer and heat transfer” Engineering Research Journal, Helwan university, Faculty of engineering, Mataria, Cairo, Egypt. “An experimental investigation of closely interfering airfoils at a low Reynolds number”, Proceedings of ESDA, Montreux, Switzerland. “Influence of various factors on the flow characteristics through a gas turbine cascade”, 7th International Congress on Fluid Dynamics and Propulsion, Cairo, Egypt. “Experimental, numerical and neural investigation of the aerodynamic characteristics for two-dimensional wings in ground effect”, Al-Azhar Engineering, 7th International Conference, Cairo, Egypt. “Influence of free-stream turbulence on turbulent drag reduction and heat transfer enhancement over plates with stream wise V-micro-grooves “, Engineering Research Journal, Volume 96. Helwan university, Faculty of engineering, Mataria, Cairo, Egypt. “Experimental and numerical investigation of internal and external flow fields for building with porous canopy roofs”, Al-Azhar Engineering, 8th International Conference, Cairo, Egypt. “Heat transfer and flow friction in a rectangular duct with perforated angled ribs mounted on the bottom wall”, Engineering Research Journal, Volume 96, Helwan university, Faculty of engineering, Mataria, Cairo, Egypt. “Instability of Darcian flow in an alternating Magnetic field”, Journal of Mechanics and Mechanical Engineering, Vol. 7, No. 2, pp. 23-60. “Nonlinear surface wave instability for electrified Kelvin fluids”, Journal of Colloid and Interface Science, Volume 285, pp. 744-759. “Experimental study of turbulent flow characteristics inside a rectangular S-shaped diffusing duct”, 44th AIAA Aerospace Science Meeting and Exhibit, AIAA – 2006- 1501, Reno, Nevada, USA. “Aerodynamic and heat transfer characteristics of two interfering low-rise building”, International Simulation Conference (ISC0 Aero-03, University of Palermo, Italy. “Study of aerodynamic characteristic on slender bodies at high angles of attack”, Engineering Research Journal, Volume 105, Helwan university, Faculty of engineering, Mataria, Cairo, Egypt. “Modelling of Heat Distribution and Air Turbulent Flow inside a Greenhouse at Different Air Flow Rates” AIAA 2008-1176, 46th AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, U.S.A. “Area ratio effect on the turbulent flow through a diffusing S-duct using Large-eddy simulation” 6th International Energy Conversion Engineering Conference (IECEC), Marriott Cleveland Downtown at Key Center, Cleveland, Ohio, USA. “Computational Study of center line turning angle effect on the turbulent flow through a diffusing S-duct using Large-eddy simulation”, Numerical Investigation of Aerodynamic Characteristics on Slender Bodies at Incidence Study the effect of Velocity Inlets Location on Thermal and Flow Pattern inside an Empty Greenhouse Area ratio effect on the turbulent flow through a diffusing S-duct using Large-eddy simulation Analysis of the anomalous thermal properties of phase change materials based on paraffin wax and multi walls carbon nanotubes Experimental Characterization for a PV Module Using Low Cost Method Computational Study of center line turning angle effect on the turbulent flow through a diffusing S-duct using Large-eddy simulation OPERATING ROOMS INFECTION CONTROL ANALYS" ASME 2014 International Mechanical Engineering Congress & Exposition November 14-20-2014, Montreal, Canada, 2014. Study the effect of Velocity Inlets Location on Thermal and Flow Pattern inside an Empty Greenhouse Performance analysis for hybrid PV/T system using low concentration MWCNT (water-based) nanofluid Numerical Study on Turbine Wakes in Wind Farms Experimental investigation on the effect of using nano fluid (Al2O3-Water) on the performance of PV/T system Optimization and energy management of hybrid standalone energy system: a case study Experimental investigation on the performance of a small reverse osmosis unit Experimental investigation for horizontal wind turbine of direct-drive.