MECHANICAL ENGINEERING

 

 

Publication Record

 

Chedid, R., N. Ghaddar, F. Chaaban, S. Shehab and T. Mattar. 2001. Assessment of energy efficiency measures: The case of the Lebanese energy sector. International Journal of Energy Research 25: 355-374.

 

Darwish, M., and F. Moukalled. 2000. B-EXPRESS: A new bounded EXtrema PREServing strategy for convective schemes. Numerical Heat Transfer, Part B: Fundamentals.

Ghaddar, N. 1999. Turbulent hydromagnetic flow in bottom-heated thermosyphonic closed loop: The induced electric current. Energy Conversion and Management.

Ghaddar, N., and A. El-Hajj. 2000. Numerical study of heat transfer augmentation of modulated flow in corrugated channels. Heat Transfer Engineering 494, 21 (5):1–12.

Ghaddar, N., and T. Mezher. 1999. Modeling of current and future energy intensity and greenhouse gas emissions of the Lebanese industrial sector: Assessment of mitigation options. Applied Energy.

Moukalled, F., and S. Acharya. 2000. Natural convection in tapezoidal cavities with baffles mounted on the upper inclined surfaces. Numerical Heat Transfer, Part A: Applications.

———. 2001. Natural convection in trapezoidal cavities with two offset baffles. Journal of Thermophysics and Heat Transfer.

 

Moukalled, F., and M. Darwish. 2000. A unified formulation of the segregated class of algorithms for fluid flow at all speeds. Numerical Heat Transfer, Part B: Fundamentals.

———. 2001. A high-resolution pressure-based algorithm for fluid flow at all speeds. Journal of Computational Physics.

Moukalled, F., A. Doughan, and S. Acharya. 1999. Mixed convection heat transfer in concave and convex channels. Journal of Thermophysics and Heat Transfer.

———. 2000. Parametric study of mixed convection in channels with concave and convex surfaces. International Journal of Heat and Mass Transfer.

Moukalled, F., and A. Honein. 1999. Computer aided analysis of hydraulic pumps. International Journal of Mechanical Engineering Education.

Nuwayhid, R., F. Moukalled, and N. Noueihed. 2000. On entropy generation in thermoelectric devices. Energy Conversion and Management.

 

Shihadeh, A. and  Hochgreb, S. 2000. Diesel engine combustion of biomass pyrolysis oils. Energy and Fuels 14 (2):260–274.



 

Abstracts, Conferences, and Proceedings

 

Abdallah, S. M., B. F. Rolfe*, M. J. Cardew-Hall*, and G. A. W. West*. April 2001. A shape error metric for sheet metal forming with a view to develop a simple springback measure. Proceedings of 9th International Conference on Sheet Metal, Leuven, Belgium.

———. April 2001. Developing an inverse shape error-process parameter model for shape forging. Proceedings of 4th International ESAFORM Conference on Material Forming, Liege, Belgium.

Chaaban, F., R. Chedid, and N. Ghaddar. April 2001. Energy-efficiency as a tool for sustainable development in Aon-Annex I nations. The 12th Global Warming International Conference and XPO on Year 2001 Conference on Kyoto Compliance Review, Cambridge, UK.

Darwish, M., F. Moukalled, and S. Balu. July 2000. A unified formulation of the segregated class of algorithms for multi-fluid flow at all speeds. AIAA/ASME/SAE/ASEE Joint Propulsion Conference, Huntsville, Alabama, USA.

Ghaddar, N. November 2000. Economic and environmental assessment of improving energy efficiency in Lebanese industrial sector. COMPLES 2000, Mediterranean Conference on Energy and Environment, Beirut, Lebanon.

Ghaddar, N., and F. Chaaban. August 2000. Analytical and experimental study of a thermosyphonic closed loop MHD generator. Proceedings of ASME 2000 National Heat Transfer Conference (NHTC2000-12152), Pittsburgh, Pennsylvania, USA.

Ghaddar, N., F. Chaaban, and K. Nahleh. August 1999. Experimental study of a novel thermosyphonic MHD electric generator. Proceedings of the 34th Intersociety Energy Conversion Engineering Conference (IECEC), British-Colombia, Canada.

Ghaddar, N., and T. Mezher. July 1999. Modeling of current and future energy intensity and greenhouse gas emissions of the Lebanese industrial sector: Assessment of mitigation options. Proceedings of the Fifth International Conference on Technologies and Combustion for a Clean Environment, Lisbon, Portugal.

 

Ghaddar, N., and F. Moukallid. June 2001. American grade inflation demeaning overseas good students: Experience at the American University of Beirut. 2001 ASEE Annual Conference and Exposition, Albuquerque, New Mexico, USA.

Ghali, K., N. Ghaddar, and B. Jones. August 2000. Study of convective heat and moisture transport within porous cotton fibrous medium. Proceedings of ASME 2000 National Heat Transfer Conference, Pittsburgh, Pennsylvania, USA.

Ghali, K., N. Ghaddar, B. Jones, and N. Awar. June 2001. Modeling of heat and moisture transport by periodic ventilation of cotton fibrous media. ASME 35th National Heat Transfer Conference, Anaheim, California, USA.

Moukalled, F., and M. Darwish. July 1999. A finite-volume algorithm for all speed flows. Finite Volumes for Complex Applications II: Problems and Perspectives, Duisburg, Germany.

Mrad, F., N. Ghaddar, N. Sabah, and J. Abed. June 2000. Adopted techniques towards ABET EC2000 accreditation at the American University of Beirut. 2000 ASEE Annual Conference and Exposition, St. Louis, Missouri, USA.

Nuwayhid, R., F. Moukalled, R. Abu Said, and M. Daaboul. August 2000. Practical design considerations for a rural stove-top thermoelectric generator. International Conference on Thermoelectrics, Cardiff, Wales, UK.

 

 

 

Research Project

 

Experimental study of a novel thermosyphonic magnetrohydrodynamic generator

A direct energy conversion from thermal to electrical will be experimentally and analytically investigated using a thermosyphonic hydromagnetic bottom-heated closed loop flow as an electrical generator. A transverse magnetic field was imposed in the middle non-conducting plastic- wall region, through a careful design of a set of electromagnets with minimum circuit reluctance. In the current proposal, we intend to use permanent magnets to replace the electromagnet and simplify the design. An analytical solution which was developed for the specific experimental design of the pipe loop predicted that the range of the magnetic field strength covered by the electromagnet used in previous experiments was outside the optimal range predicted by the model. The analytical model needs to be carried further to obtain a direct correlation between the device operating parameters, such as driving temperature difference, fluid electrical conductivity, and magnetic field strength. The thermal and mechanical efficiency and performance curves of the device will be developed. Ghaddar, N. (PL), and F. Chaaban.

Supported by URB
Completed or in progress at AUB