Main Menu

Home Prominent Scientists
Prominent Scientist
Dr Musthak PDF Print E-mail
Written by Hayder Abdulbari   
Thursday, 19 January 2012 05:41
Associate Professor Dr Mushtak Al-Atabi Dr Mushtak Al-Atabi
grey_1px
Dean
 
PhD, MSc, BSc (Mechanical Engineering)
 
profile_round_bottom


Subjects Taught

  • Engineering Design and Professional Skills

 

Research Interests

  • Thermofluids
  • Renewable Engineering
  • Biomechanical Engineering
  • Engineering Education
  • Academic Leadership
Last Updated on Friday, 03 February 2012 04:31
 
Prof Hussain H. Al-Kayiem PDF Print E-mail
Written by Hayder Abdulbari   
Thursday, 19 January 2012 05:41

Assoc. Prof. Dr. Hussain H. Al-Kayiem

Website of Prof. HA Al-Kayiem

Interested in CFD Analysis and Experimental Analysis in:

•Integration of Solar–Biomass applications
•Enhancement of Heat Transfer of Thermal Equipment
•Multi phase flows
•Flow Analysis in supersonic intakes
•Renewable Energies

Last Updated on Monday, 27 February 2012 14:24
 
Prof Sobri PDF Print E-mail
Written by Hayder Abdulbari   
Thursday, 19 January 2012 05:40

Dr. Mohd Sobri Takriff

Professor & Head

Department of Chemical & Process Engineering, Faculty of Engineering

Universiti Kebangsaan Malaysia

 

Tel:603-8921 6400/6413

Fax:603-89216148

e-mail:  This e-mail address is being protected from spambots. You need JavaScript enabled to view it / This e-mail address is being protected from spambots. You need JavaScript enabled to view it

 

 

Mohd Sobri Takriff is currently the Head of Department of Chemical & Process Engineering, Universiti Kebangsaan Malaysia. He graduated with a PhD degree in Chemical Engineering from University of Arkansas in 1996.

Teaching

Research

Publications

Consultancies

Last Updated on Friday, 03 February 2012 04:20
 
Prof Michel El Hayek PDF Print E-mail
Written by Hayder Abdulbari   
Thursday, 19 January 2012 05:40

MICHEL EL HAYEK

Faculty of Engineering
Associate Professor
Phone: +961-9-218950 (ext. 2032)
E mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Website of Prof M.E. Hayek

M. El Hayek received his Mechanical Engineering Diploma from Faculté Polytechnique de Mons (Belgium) in 1987. He had been then employed by the Faculté Polytechnique de Mons as research engineer and worked on various research projects supported by the European Union within the JOULE program framework. At the same time he was acting as assistant teaching specific laboratory courses. He pursued in parallel graduate studies and ended up with a “Doctorat en Sciences Appliquées” from the same Faculté Polytechnique de Mons in 1997. He has also been awarded the degree of “Doctorat Européen en Sciences Appliquées” in 1997 by the Faculté Polytechnique de Mons (Belgium), the Technische Universiteit Delft (The Netherlands), and the Universidade Técnica de Lisboa (Portugal).
M. El Hayek joined Notre Dame University as Assistant Professor in Mechanical Engineering in 1998 and has been promoted to the rank of Associate Professor in October 2007. He has been appointed Chairperson of the Mechanical Engineering Department in October 2006. He is regularly teaching courses in the areas of fluid mechanics, heat transfer, thermodynamics, computational methods, fluid power technology, etc. He is conducting research related to his area of expertise and publishing on a regular basis.

 

 

Profile
Education
Publications

Last Updated on Monday, 27 February 2012 14:25
 
Prof JL Zakin PDF Print E-mail
Written by Hayder Abdulbari   
Thursday, 19 January 2012 05:39

http://www.chbmeng.ohio-state.edu/people/zakin.html

Turbulent drag reduction is a striking phenomenon in which the presence of small quantities of additive (in some cases a few ppm) in a carrier fluid can reduce turbulent pressure losses by up to 90%. Highpolymer drag-reducing additives have been successfully used in many crude oil and finished petroleum product pipelines all over the world. 

While useful in once-through applications such as pipelines, polymer additives are not suitable for recirculating flows as they are susceptible to irreversible (permanent) mechanical degradation in regions of high stress. For recirculation flows, additives which are not sensitive to degradation by shear or extensional flows are needed or, if they do degrade, their structures must recover or repair quickly. Many surfactant additives can recover from mechanical degradation in seconds and so are effective in recirculating flows. 

To utilize low-cost energy or waste heat, closed-loop district heating is used in many cities in northern Europe, Japan, and the U.S. to heat homes, businesses, and factories and to provide hot water. Alternatively, large chillers can provide low-temperature water for circulation through a district cooling system. District cooling systems are becoming increasingly important in the U.S. and Japan. The use of surfactant drag-reducing additives in these systems conserves fuel and thus reduces pollutants entering the environment and also reduces the size of pumps and piping. They can also increase throughput. Preliminary field tests have been encouraging. 

  My current drag-reduction research is focused on cationic, zwitterionic, mixed surfactant, and nonionic surfactant/water and ethylene glycol/water systems suitable for use at temperatures to at least 100 C for district heating systems and from -5 to 15 C for cooling systems. Understanding the influence of the chemical structure of the surfactant on its micellar structure, drag-reducing efficiency, and temperature range and the influence of micellar size and shape on drag-reducing ability will permit tailormaking useful surfactants for these and other applications. To this end, rheological techniques such as normal stress, extensional viscosity, dynamic viscosity, and flow birefringence measurements, and NMR, SANS, and cryogenic transmission electron microscopy (cryo-TEM) are utilized to characterize surfactants solutions. An international collaborative research project sponsored by NEDO (Japan) to develop surfactant additivies for water/ ethylene glycol systems effective to -5C was completed recently. 

In studies of the effects of chemical structure of cationic surfactants and of their counterions, my students and I have discovered unusual rheological and microstructure phenomena. We showed that non-viscoelastic surfactant solutions which are water-like in their rheological behavior could be drag-reducing and that the belief that thread-like surfactant micelle network microstructures in the quiescent state are required for drag reduction is not generally true. Vesicle systems can be transformed into dragreducing, thread-like structures under stress. We have also demonstrated that the limiting Friction Factor-Reynolds number drag-reducing asymptote for high polymers proposed by Virk many years ago is exceeded by some surfactant systems, and we have offered a new asymptote for surfactants as well as a new turbulent mean velocity profile asymptote. Recent work has focused on developing techniques to enhance heat transfer in drag-reducing solutions by temporarily degrading their microstructures in heat exchangers while allowing them to recover downstream.

 

Last Updated on Monday, 27 February 2012 14:26
 


Announcement

{UpDownScroller} Join us in International Conference of Fluids and Chemical Engineering (FluidsChE 2015), 25-27 Nov 2015 in Kuala Lumpur Malaysia. Go to FluidsChE 2015 tab to know more about the conference. Abstract submission on 15 April 2015. Registration fee from RM700. {/UpDownScroller}

Visitors Counter

mod_vvisit_countermod_vvisit_countermod_vvisit_countermod_vvisit_countermod_vvisit_counter
mod_vvisit_counterToday46
mod_vvisit_counterThis month1478
mod_vvisit_counterLast month315