January 2011

System identification for experimental study for ultra high molecular weight for polyethylene process by using Bi-supported SiO2 / MgCl2 / TiCl4 catalyst

  In this work, system identification method is used to capture the reactor characteristics of production rate of polyethylene (PE) based on published experimental data. The identification method is used to measure the percentage effect on the production rate of PE by measuring the effect of input factors of temperature of reaction, hydrogen concentration, and [Al]/[Ti] molar catalyst ratio. Temperature of...

Author(s): Ahmmed S Ibrehem and Hikmat S. Al-Salim

January 2011

Hydromagnetic forced flow between a rotating disc and a naturally permeable stationary porous disc saturated with fluid

  This paper considers the flow of a conducting viscous incompressible fluid between two non-conducting parallel discs, when the magnetic field was applied perpendicularly to the discs. The upper disc is in steady rotation, while the lower one is a stationary porous disc. The whole flow is divided into two regions: the free fluid region (between two parallel discs) and the porous region (this flow is of porous...

Author(s): Bhupendra Kumar Sharma, Tara Chand and R. C. Chaudhary