Volume 20 (2023)
Volume 19 (2022)
Volume 18 (2021)
Volume 17 (2020)
Volume 16 (2019)
Volume 15 (2018)
Volume 14 (2017)
Volume 13 (2016)
Volume 12 (2015)
Volume 11 (2014)
Volume 10 (2013)
Volume 9 (2012)
Volume 8 (2011)
Volume 7 (2010)
Volume 6 (2009)
Volume 5 (2008)
Volume 4 (2007)
Volume 3 (2006)
Volume 2 (2005)
Volume 1 (2004)
Materials synthesize and production
Low-Cost and Green Synthesis of Disodium Salt of Hydroquinone: Investigation of Physical and Chemical Properties and its crystal structure

Saeed Ovaysi; Reza Pirdadeh Beiranvand

Articles in Press, Accepted Manuscript, Available Online from 24 April 2024


  A low cost and environmentally friendly process for the synthesis of disodium salt of hydroquinone (DSH) is presented. This novel synthesis technique employs water as solvent. Compared to the well-established synthesis techniques which utilize methanol, the presented technique is safer and environmentally ...  Read More

Materials synthesize and production
Synthesis, Characterization and Analysis of Thermal Properties and burning rate of Zr/BaCrO4 mixture

R. Omidi; M. Simiari; S. Ovaysi; M. Nazari; M. Rezaei

Volume 20, Issue 2 , August 2023, , Pages 3-14


  In this work, nanoparticles of the metal fuel Zirconium (Zr) and nanoscale oxidizer BaCrO4 are synthesized considering their unique nanoparticle characteristics like mixing homogeneity and high surface/volume ratio. Using the synthesized fuel and oxidizer, the pyrotechnic mixture of Zr/BaCrO4 was developed ...  Read More

Separation Technology,
CFD Modeling and Industrial Evaluation of a Cyclone Cascade for the Production of the HDPE Catalyst

Saeed Ovaysi

Volume 18, Issue 3 , September 2021, , Pages 74-85


  A new approach is proposed to evaluate various designs for gas-solid cyclone separators. This approach uses single-phase flow simulation results to find a quantitative measure of flow symmetry in a given cyclone. Flow symmetry is computed by averaging imbalances of   non-axial velocities ...  Read More

Developing a Mathematical Model to Predict the Behavior of a Supersonic Superheated Steam Flow inside a Laval Nozzle

H. Rezaei; S. Ovaysi; M. Rahimi

Volume 17, Issue 2 , June 2020, , Pages 56-69


  The objective of the investigation was to mathematically correlate the behavior of a supersonic superheated steam flow inside a Laval nozzle, against the decision parameters. The decision parameters are the inlet temperature ranging from 374.3 K to 504.3 K and the inlet pressure from 40050.14 Pa to 133375.7 ...  Read More