1. Department of Mechanical Engineering, K.N. Toosi University of Technology, Daneshgah Blvd., Vafadar Eastern Blvd., Tehranpars Fourth Sq., Tehran, Iran. Phone: +98 21 88677272; Fax: +98 21 88677272; E-mail: shams@kntv.ac.ir
2. Mechanical Engingeering Department, Amirkabir University of Technology, Tehran, Iran
3. Toosab ENgng. Co., Tehran, Iran