Dr Ali Bahr Ennil's Outputs (11)

Multidisciplinary Optimization of Axial Turbine Blade Based on CFD Modelling and FEA Analysis (2024)
Journal Article

The turbine blade is designed to achieve expansion at high efficiency levels. For improving the turbine efficiency, different aerodynamic design optimisations are performed. On the other hand, the aerodynamic design must be enhanced to match the mech... Read More about Multidisciplinary Optimization of Axial Turbine Blade Based on CFD Modelling and FEA Analysis.

Numerical simulation of film cooling over flat plate (2022)
Book Chapter
Bahr Ennil, A., & Elfaghi, A. M. (2022). Numerical simulation of film cooling over flat plate. In New Approaches in Engineering Research Vol. 12 (10-16). Trans Tech Publications. https://doi.org/10.9734/bpi/naer/v12/8210D

The commercial CFD Ansys Fluent program is used to explore the effect of film cooling across a flat plate. The coolant supply tube and the primary mixing zone are included in the computational domain. For blowing ratios of 0.33, 0.5, and 1.67, and a... Read More about Numerical simulation of film cooling over flat plate.

Investigate a hybrid open-Rankine cycle small-scale axial nitrogen expander by a camber line control point parameterization optimization technique (2017)
Journal Article
Khalil, K. M., Mahmoud, S., Al-Dadah, R. K., & Ennil, A. B. (2017). Investigate a hybrid open-Rankine cycle small-scale axial nitrogen expander by a camber line control point parameterization optimization technique. Applied Thermal Engineering, 127, 823-836. https://doi.org/10.1016/j.applthermaleng.2017.08.083

During the last few decades, low-grade heat sources such as solar energy and wind energy have enhanced the efficiency of advanced renewable technologies such as the combined Rankine cycle, with a significant reduction in CO2 emissions. To address the... Read More about Investigate a hybrid open-Rankine cycle small-scale axial nitrogen expander by a camber line control point parameterization optimization technique.

Numerical analysis of small scale axial and radial turbines for solar powered Brayton cycle application (2017)
Journal Article
Daabo, A. M., Mahmoud, S., Al-Dadah, R. K., Al Jubori, A. M., & Bhar Ennil, A. (2017). Numerical analysis of small scale axial and radial turbines for solar powered Brayton cycle application. Applied Thermal Engineering, 120, 672-693. https://doi.org/10.1016/j.applthermaleng.2017.03.125

In the current work two types of turbines, axial and radial turbine, with their three configurations, Single Stage Axial, Dual Stage Axial and Single Stage Radial turbines, for solar Brayton cycle applications have been parametrically investigated wi... Read More about Numerical analysis of small scale axial and radial turbines for solar powered Brayton cycle application.

Three dimensional optimization of small-scale axial turbine for low temperature heat source driven organic Rankine cycle (2016)
Journal Article
Al Jubori, A., Al-Dadah, R. K., Mahmoud, S., Bahr Ennil, A., & Rahbar, K. (2017). Three dimensional optimization of small-scale axial turbine for low temperature heat source driven organic Rankine cycle. Energy Conversion and Management, 133, 411-426. https://doi.org/10.1016/j.enconman.2016.10.060

Advances in optimization techniques can be used to enhance the performance of turbines in various applications. However, limited work has been reported on using such optimization techniques to develop small-scale turbines for organic Rankine cycles.... Read More about Three dimensional optimization of small-scale axial turbine for low temperature heat source driven organic Rankine cycle.

Development of micro-scale axial and radial turbines for low-temperature heat source driven organic Rankine cycle (2016)
Journal Article
Al Jubori, A., Daabo, A., Al-Dadah, R. K., Mahmoud, S., & Ennil, A. B. (2016). Development of micro-scale axial and radial turbines for low-temperature heat source driven organic Rankine cycle. Energy Conversion and Management, 130, 141-155. https://doi.org/10.1016/j.enconman.2016.10.043

Most studies on the organic Rankine cycle (ORC) focused on parametric studies and selection working fluids to maximize the performance of organic Rankine cycle but without attention for turbine design features which are crucial to achieving them. The... Read More about Development of micro-scale axial and radial turbines for low-temperature heat source driven organic Rankine cycle.

Development of efficient small scale axial turbine for solar driven organic rankine cycle (2016)
Presentation / Conference Contribution

Recently, the increase in fossil fuel consumption and associated adverse impact on the environment led to significant interest in renewable energy sources like solar. This paper presents a new methodology that integrates the ORC cycle analysis with m... Read More about Development of efficient small scale axial turbine for solar driven organic rankine cycle.

Minimization of loss in small scale axial air turbine using CFD modeling and evolutionary algorithm optimization (2016)
Journal Article
Bahr Ennil, A., Al-Dadah, R., Mahmoud, S., Rahbar, K., & AlJubori, A. (2016). Minimization of loss in small scale axial air turbine using CFD modeling and evolutionary algorithm optimization. Applied Thermal Engineering, 102, https://doi.org/10.1016/j.applthermaleng.2016.03.077

Small scale axial air driven turbine (less than 10 kW) is the crucial component in distributed power generation cycles and in compressed air energy storage systems driven by renewable energies. Efficient small axial turbine design requires precise lo... Read More about Minimization of loss in small scale axial air turbine using CFD modeling and evolutionary algorithm optimization.

Improvements in Distributed Compressed Air Energy Storage Efficiency through Turbine Multi-operating Point Optimization (2016)
Presentation / Conference Contribution

Optimization Of Small Scale Axial Air Turbine Using ANSYS CFX (2015)
Presentation / Conference Contribution

Efficient small scale axial air turbine is one of the proposed solutions for improving the overall efficiency of energy recovery cycles based on renewable energy sources. Turbine design requires an intensive CFD simulation and design optimization to... Read More about Optimization Of Small Scale Axial Air Turbine Using ANSYS CFX.

Prediction of Losses in Small Scale Axial Air Turbine Based on CFD Modelling (2015)
Presentation / Conference Contribution

Efficient small scale axial air turbines play a major role in determining the overall conversion efficiency in certain energy cycles using renewable energy sources. Loss predictions are vital for the development and optimization of such small scale t... Read More about Prediction of Losses in Small Scale Axial Air Turbine Based on CFD Modelling.