Al Kady, M. A., and F. M. Owis, "NUMERICAL SIMULATION OF NOZZLE FLOW WITH CHEMICAL EQUILIBRIUM.", ARPN Journal of Engineering and Applied Sciences, vol. 8, issue 5, 2013. Abstractjeas_0513_884.pdf

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Kamel, M., F. Owis, M. Idres, and A. Hashem, "Numerical Simulation of Supersonic and Turbulent Combustion with Transverse Sonic Fuel Injection", To appear in the International Journal of Engineering Systems Modelling and Simulation, vol. 7, 2015. AbstractWebsite

Complicated interacting flow features such as shock-wave, boundary-layer and shock induced combustion are simulated numerically in the current study to investigate the effect of the transverse sonic fuel injection on the air-fuel mixing and flame stabilization. The flow is modeled using the Reynolds Averaged Navier-Stocks equations (RANS), where chemical kinetics model is employed to compute the finite rates of chemical reactions. Turbulencernis modeled using the Baldwin-Lomax algebraic model. Finite-volume scheme is applied where the convective fluxes are discretized by second order accuraternRoes scheme using MUSCL approach. Second order accurate Runge-Kutta method is used for the time-integration. Turbulent and chemically-reacting supersonic flow of hydrogen-air mixture over a ramp is simulated and the results show good agreement with the experimental data and the published numerical simulations In addition, air-hydrogen flow is studied in a single strut scramjet engine, where mixing and flame holding processes are carried out using fuel transverse sonic injection.

ElSayed, A., F. Owis, and M. M. A. Rahman, "Numerical Computation and Optimization of Turbine Blade Film Cooling", Advance in Mechanical Engineering, vol. 2014, issue (Article ID 528031), pp. 19, 2014. AbstractWebsite

The effect of film cooling parameters on the cooling effectiveness of an actual turbine blade is studied numerically. Film cooling parameters such as the hole-shape, holes distribution, blowing ratio, streamwise angle and spanwise angle are investigated to select the appropriate cooling parameters. Unstructured finite volume technique is used to solve the steady, three-dimensional and compressible Navier-Stokes equations. Using one cooling holes array indicates that the average overall film cooling effectiveness is enhanced by decreasing the streamwise angle for high blowing ratio on the suction side of the turbine blade. The film cooling effectiveness is enhanced on the pressure side for a blowing ratio of unity. In addition, the cooling effectiveness increases by increasing the lateral and forward diffusion angles. The computations reveal that the efficiency of cooling is decreased at the leading edge due to the large surface curvature of the blade. The presence of compound shape (spanwise angle) enhanced the film cooling effectiveness on the two sides. Multi stagger cooling-hole arrays are investigated and the results indicate that five stagger cooling arrays on the pressure side and three stagger cooling arrays on the suction side with LFDCA-9.3-14.6 hole-shape are enough to have good cooling of the two sides using 2.17% bleed air of the engine.

Aziz, M. A., F. M. Owis, and M. M. Abdelrahman, "Design Optimization of a Transonic-Fan Rotor Using Numerical Computations of the Full Compressible Navier-Stokes Equations and Simplex Algorithm", International Journal of Rotating Machinery, vol. 2014: Hindawi Publishing Corporation, 2014. Abstract
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Elsayed, A. M., F. M. Owis, and M. M. Abdel Rahman, "Film Cooling Optimization Using Numerical Computation of the Compressible Viscous Flow Equations and Simplex Algorithm", International Journal of Aerospace Engineering, vol. 2013: Hindawi Publishing Corporation, 2013. Abstract
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Hajj, M. R, Q. O. L. F., "A reduced-order model for the lift on a cylinder undergoing forced transverse oscillations", 4th European and African Conference on Wind Engineering, EACWE 2005;Prague;11 July 2005, pp. 132–133, 2005. Abstract
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Owis, F., and P. Balakumar, "Direct Numerical Simulation of High Subsonic Jets", Recent Advances in DNS and LES: Springer, pp. 329–340, 1999. Abstract
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Owis, F., and P. Balakumar, "Linear and nonlinear stability of jets using DNS", APS Division of Fluid Dynamics Meeting Abstracts, vol. 1, 1998. Abstract
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