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)
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

Increasing flow capacity and reducing drag in microtubes using drag-reducing polymer

M.H. Akbari; M. Rahimi; H.R. Karami

Volume 17, Issue 2 , June 2020, , Pages 70-87


  Decreasing pressure losses in microtubes is an important subject, especially when increase in flow capacity is required. In the same pumping power, decreasing the pressure drops is coincides with increasing the fluid flow rate passing through a microtube. The current study aims to examine how the water ...  Read More

Cooling Enhancement of a Photovoltaic Panel Through Ferrofluid Stimulation Using a Magnetic-Wind Turbine

N. Heidari; M. Rahimi; N. Azimi

Volume 16, Issue 4 , October 2019, , Pages 35-52


  Wind energy is used to rotate a magnetic turbine in order to remove heat from the surface of a photovoltaic (PV) panel. A three-bladed turbine, which rotates with wind energy, has rotational motion underneath the studied PV panel in order to move Magnetic Nano-Particles (MNPs). In addition, effects of ...  Read More

Separation Technology,
Propionic acid extraction in a microfluidic system: simultaneous effects of channel diameter and fluid flow rate on the flow regime and mass transfer

F. Hosseini; M. Rahimi; O. jafari

Volume 15, Issue 4 , November 2018, , Pages 48-62

  In this work, extraction of propionic acid from the aqueous phase to the organic phase (1-octanol) was performed in T-junction microchannels and effects of channel diameter and fluid flow rate on the mass transfer characteristics were investigated. The two-phase flow patterns in studied microchannels ...  Read More

Separation Technology,
Microfluidic extraction of tannic acid from Quercus leaves

M. Yasemi; M. Rahimi; A. Heydarinasab; M. Ardjmand

Volume 15, Issue 3 , September 2018, , Pages 15-33

  In this study, extraction of tannic acid using microchannel was investigated. Affective parameters were optimized. Different solvents including buthanol, ethylacetate and n-hexane as organic phase, methanol, propanol, ethanol and water as aqueous phase investigated. Microchannels with different confluence ...  Read More

Reaction Engineering, Kinetics and Catalysts,
Biodiesel production from soybean oil using ionic liquid as a catalyst in a microreactor

F. Mohammadi; M. Rahimi; A. Parvareh; M. Feyzi

Volume 15, Issue 1 , February 2018, , Pages 102-114

  In the present study, Choline hydroxide (ChOH) as an ionic liquid catalyst was used for transesterification of soybean oil into biodiesel in a microchannel reactor. The effects of three variables i.e. reaction temperature, catalyst dosage and total flow rate on fatty acid methyl ester (FAME) content ...  Read More

Separation Technology,
Waste water ammonia stripping intensification using microfluidic system

Mo. H. Almasvandi; M. Rahimi

Volume 14, Issue 4 , December 2017, , Pages 17-31

  This paper reports the results of experimentally removing ammonia from synthetically prepared ammonia solution using a micro scale mixing loop air stripper. Effects of various operational parameters (such as: pH, air flow rate, wastewater flow rate and initial ammonia concentration) were evaluated. By ...  Read More

Reaction Engineering, Kinetics and Catalysts,
Ultrasound-Assisted Biodiesel Production in microreactors

M. Basiri; M. Rahimi; H. Babaei Mohammadi

Volume 13, Issue 2 , April 2016, , Pages 22-32

  The ultrasound-assisted (UA) soybean oil methanolysis using KOH as a catalyst was studied at different reaction conditions in a microreactor. Box–Behnken experimental design, with three variables, was performed and the effects of three reaction variables i.e. reaction temperature, catalyst concentration ...  Read More

Petroleum and Reservoir Engineering
An optimization study by response surface methodology (RSM) on viscosity reduction of residue fuel oil exposed ultrasonic waves and solvent injection

A. Mohammadi Doust; M. Rahimi; M. Feyzi

Volume 13, Issue 1 , January 2016, , Pages 3-19

  In this study, response surface methodology (RSM) based on central composite design (CCD) was applied for investigation of the effects of ultrasonic waves, temperature and solvent concentration on viscosity reduction of residue fuel oil (RFO). Ultrasonic irradiation was employed at low frequency of 24 ...  Read More