Mechanical Engineering
1. Effect of Surface Roughness on Vortex Length and Efficiency of Gas-oil Cyclones through CFD Modelling

Seyed Masoud Vahedi; Farzad Parvaz; Mohsen Khandan Bakavoli; Mohammad Kamali

Volume 9, Issue 1 , Winter 2020, , Pages 68-84

http://dx.doi.org/10.22050/ijogst.2018.102377.1417

Abstract
  Separation of suspended droplets in a fluid flow has been a great concern for scientists and technologists. In the current study, the effect of the surface roughness on flow field and the performance of a gas-oil cyclone is studied numerically. The droplets and the turbulent airflow inside the cyclone ...  Read More

Petroleum Engineering – Reservoir
2. A Novel Approach to Measuring Water and Oil Relative Permeabilities in Two-phase Fluid Flow in Porous Media

Azadeh Mamghaderi; Behzad Rostami; Seyed Hamed Tabatabaie

Volume 7, Issue 2 , Spring 2018, , Pages 14-34

http://dx.doi.org/10.22050/ijogst.2018.106164.1425

Abstract
  In this study, direct laboratory measurements of unsteady-state imbibition test are used in a new approach to obtain relative permeability curves with no predetermined functionality assumptions. Four equations of continuity, Darcy’s law, cumulative oil production, and water fractional flow are ...  Read More