PDFs & Tech Graduates Undergraduates Past Students
Yishak Yusuf
yishak@ualberta.ca
PhD
MSc in Chemical (Environmental) Engineering (2014)
BSc in Chemical Engineering (2009)
RGL
Research Interests : SAGD
flow through slotted liners (rectangular orifice)
flow through porous media
pressure loss characterisation
aspect ratio effects
Experimental and analytical investigation of viscous flow through rectangular orifices at Reynolds numbers, Re < 1. A wide range of aspect ratio, AR, is studied covering geometries ranging from the square orifices (AR = 1) to much longer narrow slots (AR = 250) surpassing most of the works found in the literature. Experiments are conducted in a large scale flow floop to measure the pressure drop across orifices for varying AR, and Re.
The results are used to complement the analytical model for the loss coefficient by allowing for the flow convergence parameter, ϕ to be empirically determined. The convergence phenomenon is uniquely treated in the modeling by describing an asymptotic velocity transition in the shear-dominated near-inlet region of the orifice.
The investigation further extends to characterize the convergence region with respect to streamline behavior, and changing velocity transition in the presence of a porous medium. Particle image velocimetry experiments are employed to obtain velocity field measurements for analysis in streamline coordinates. The pressure distribution along streamlines at different locations is determined to examine the model developed from pressure measurement experiments.
The main hypothesis tested is that the flow convergence phenomenon is strongly affected by the AR of the rectangular orifice with direct effects on the curvature attributes of the streamlines. Conservation equations such as the Navier-Stokes equation can be applied along with a model for the distribution of velocity to yield mathematical models for the pressure loss as a function of AR, and Re. Experiments provide the means to verify the model and conformity to both physical and mathematical principles.
Flow facility for experiments
Definition of slot geometry
Schematic definition of the flow domain showing the flow convergence phenomenon in different regions on the x–y and x–z planes. Conceptual sketches of streamline shown
Publications
Journals
- Yusuf, Y, Sabbagh, R, Baldygin, A, Rashid, M A I, Leitch, M, Waghmare, P R., and Nobes, D.S. (2019) “Semi-empirical pressure loss model for low Reynolds number flow through slots”, Physics of fluids, (prepared for submission as an invited paper)
- Leitch, M, Yusuf, Y, and Ma, Y (2017) “Interdisciplinary semantic model framework for complex SAGD production tooling system” Journal of Computational Design and Engineering, vol. 5, no. 1, pp 68-79, Elsevier
- Yusuf, Y, and Ma, Y (2016) “Design of a simulation tool for steam assisted gravity drainage: Based on the concept of unified feature modeling scheme”, Journal of Mechanics Engineering and Automation, 6, pp 167-179, David Publishing
Conferences
- Ansari S., Yusuf Y., Kinsale L., Sabbagh R. and Nobes D. S. (2018) “Visualization of fines migration in the flow entering apertures through the near-wellbore porous media”, 2018 SPE Thermal Well Integrity and Design Symposium Banff |Canada,Nov 27-29 2018
-S. Ansari, Y. Yusuf, R. Sabbagh, H. Soltani, L. Kinsale and D.S. Nobes (2018) “An imaging derivation of the pressure field of a multi-phase flow in a porous media using µ-SPIV”. In 19th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics, Lisbon, Portugal, July 16–19, 2018.
-Yusuf, Y., Ansari, S., Bayans, M., Sabbagh, R., El Hassan, M., and Nobes, D.S. (2018) “Study of Flow Convergence in Rectangular Slots using Particle Shadowgraph Velocimetry”, 5th International Conference on Experimental Fluid Mechanics – ICEFM 2018 Munich, Munich, Germany, July 2-4, 2018
-Yusuf, Y, Baldygin, A, Sabbagh, and Nobes, D.S. (2017) “Flow of viscous fluid through rectangular orifice in the presence of porous media at the inlet section”, 67th Canadian Chemical Engineering Conference, Edmonton, AB, Canada, October 22-25, 2017
-Yusuf, Y, Sabbagh, R, and Nobes, D.S. (2017) “Flow convergence model for flow through long aspect ratio rectangular orifices”, The Okanagan Fluid Dynamics Meeting, Kelowna, BC, Canada, August 21-24, 2017
-Yusuf, Y, Baldygin, A, Sabbagh, R, Leitch, M, Waghmare, P R., and Nobes, D.S. (2017) “Effect of aspect ratio on pressure loss and characteristics of low Reynolds number flow through narrow slots”, Proceedings of the 2nd Thermal and Fluid Engineering Conference, TFEC2017-18387, Las Vegas, USA, April 2-5, 2017
-Yusuf, Y, (2016) “Effect of Aspect Ratio and Boundary Conditions on Pressure Loss and Characteristics of Low Reynolds Number Flow through Narrow Slots”, 2016 RGL Symposium on SAGD Near-Wellbore Physics and Design, University of Alberta, Edmonton, October 12, 2016
-Yusuf, Y, and Ma, Y (2016) “Design of a simulation tool for steam assisted gravity drainage: Based on the concept of unified feature modeling scheme”, Proceedings of the Eleventh International Symposium on Tools and Methods of Competitive Engineering, TMCE2016-0014, Aix-en-Provence, France, 9-13 May 2016,