Heat and Mass Transfer
Free convective heat and mass transfer of magnetic bio-convective flow caused by a rotating cone and plate in the presence of nonlinear thermal radiation and cross diffusion

M. Gnaneswara Reddy; Sandeep N

Volume 7, Issue 1 , August 2017, , Pages 1-21


  This article explores the heat and mass transfer behaviour of magnetohydrodynamic free convective flow past a permeable vertical rotating cone and a plate filled with gyrotactic microorganisms in the presence of nonlinear thermal radiation, thermo diffusion and diffusion thermo effects. We presented ...  Read More

Experimental investigations on the softening and ratcheting behaviors of steel cylindrical shell under cyclic axial loading

M. Shariati; H. Hatami; M. Damghani Nouri

Volume 2, Issue 2 , June 2013, , Pages 11-22


  In this research, softening and ratcheting behaviors of Ck20 alloy steel cylindrical shells were studied under displacement-control and force-control cyclic axial loading and the behavior of hysteresis curves of specimens was also investigated. Experimental tests were performed by a servo-hydraulic INSTRON ...  Read More

Plates and Shells
Study on buckling of steel cylindrical shells with an elliptical cutout under combined loading

Abdolhossein Fereidoon; Kamal Kolasangiani; Amin Akbarpour; Mahmoud Shariati

Volume 3, Issue 1 , December 2013, , Pages 13-25


  In this paper, simulation and analysis of thin steel cylindrical shells with elliptical cutouts under oblique loading were studied using finite element method. First, the numerical results were validated by the results of experimental test performed by an INSTRON 8802 servo hydraulic machine. Also, the ...  Read More

Fluid Mechanics
Thermo-elasto-hydrodynamic (TEHD) analysis of oil film lubrication in big end bearing of a diesel engine

H. Chamani; H. Karimaei; M. Bahrami; S. M. Agha Mirsalim

Volume 5, Issue 1 , December 2015, , Pages 13-24


  Nowadays, due to the increasing power of diesel engines, especially heavy duty diesel engines, and increasing gas pressure inside the combustion chamber, the forces acting on the engine bearings have dramatically raised. On the other hand, becaus eof the competition in the market, it is necessary to ...  Read More

Composite Materials
Free vibration analysis of CFRP cylinders with torispherical heads: Experimental and numerical investigations

Meisam Shakouri; Hessam Sarvahed; H.M. Navazi

Volume 11, Issue 1 , September 2021, , Pages 13-21


  Pressure vessels are used in a variety of applications in many engineering applications. The thin walled cylinders with torispherical heads have been widely used as pressure vessels in engineering applications. In this paper, the free vibration behavior of carbon fiber reinforced composite cylinders ...  Read More

Computational Fluid Dynamics (CFD)
Numerical prediction of the drag coefficient of bluff bodies in three-dimensional pipe flow

Tamil Chandran A; Suthakar T; Balasubramanian KR; Rammohan S; Jacob Chandapillai

Volume 12, Issue 1 , August 2022, , Pages 13-29


  Abstract Numerical analysis of drag coefficient of three-dimensional bluff bodies such as flat plates, cylinder, triangular prism, semicircular profiles located in the flow path of the pipe was performed. Bluff bodies of various lengths are analysed using a turbulence model. The effect of bluff body ...  Read More

3D numerical analysis of arterial thromboembolism through carotid bifurcation

Puria Talebi Barmi; Bahman Vahidi

Volume 13, Issue 1 , September 2023, , Pages 13-25


  Arterial embolism is one of the major causes of brain infarction. Investigating the hemodynamic factors of this phenomenon can help us to get a better understanding of this complication. The carotid artery is one of the primary tracts that emboli can go toward the brain through it. In this study, we ...  Read More

Effect of shell axial deformation on flutter of cantilevered cylindrical shells under follower forces

Mohammad Ebrahim Torki Harchegani; Mohammad Taghi Kazemi

Volume 2, Issue 1 , December 2012, , Pages 15-24


  Axial vibration effect of shell particles on dynamic stability of a cantilevered cylindrical shell under an axial follower force was addressed. In spite of free-ended shells, the reduced axial force under this effect cannot be derived analytically. Instead, an approximate method was proposed based on ...  Read More

A comparison between modal damping ratios identified by NExT-ERA and frequency domain impact test

Ali Nouri; Sajad Hajirezaee

Volume 8, Issue 1 , September 2018, , Pages 15-24


  In this research, the modal parameters of a beam in free-free condition are extracted by performing different experiments in laboratory. For this purpose, two different techniques are employed. The first methodology is considered as a time domain method in Operational Modal Analysis. While the other ...  Read More

Pressure Vessels
Dynamic simulation of a high pressure regulator

A. R. Shahani*; H. Esmaili; A. Aryaei; S. Mohammadi; M. Najar

Volume 1, Issue 1 , December 2011, , Pages 17-28


  In this paper, the dynamic simulation for a high pressure regulator is performed to obtain the regulator behavior. To analyze the regulator performance, the equation of motion for inner parts, the continuity equation for diverse chambers and the equation for mass flow rate were derived. Because of nonlinearity ...  Read More

Heat and Mass Transfer
Soret and chemical reaction effects on a three-dimensional MHD convective flow of dissipative fluid along an infinite vertical porous plate

J. Prakash; K. S. Balamurugan; S. Vijaya Kumar Varma

Volume 4, Issue 1 , December 2014, , Pages 19-42


  An analytical study was performed to study effects of thermo-diffusion and chemical reactions on a three-dimensional MHD mixed convective flow of dissipative fluid along an infinite vertical porous plate with transverse sinusoidal suction velocity. The parabolic partial differential equations governing ...  Read More

Manufacturing Processes
Design and manufacture a novel tool in the incremental sheet metal forming process and its effects on the process parameters

Ebrahim Haghani; Ahmad Gheysarian; Mohammad Honarpisheh

Volume 9, Issue 1 , September 2019, , Pages 19-31


  One of the methods for making prototypes is incremental forming process. In this method, the forming tool, performs a pre-programmed movement by the CNC machine and runs the desired path. This modernization process is used in the automotive, aerospace, military, medical and other industries. One of the ...  Read More

Finite Elements Method (FEM)
FEM investigation of drilling conditions on heat generation during teeth implantation

Farshid Ahmadi; Rohollah Mohammadi

Volume 10, Issue 1 , September 2020, , Pages 25-35


  Abstract The first step of implanting teeth is to drill a hole in the jaw bone. Excessive temperature produced during drilling is one of the destructive factors for bony tissue. If the temperature generation during surgical drilling exceeds the critical temperature, it could lead to osteonecrosis. This ...  Read More

Few heuristic optimization algorithms to solve the multi-period fixed charge production-distribution problem

N. Balaji; N. Jawahar

Volume 1, Issue 2 , June 2012, , Pages 77-87


  This paper deals with a multi-period fixed charge production-distribution problem associated with backorder and inventories. The objective is to determine the size of the shipments from each supplier and backorder and inventories at each period, so that the total cost incurred during the entire period ...  Read More

Fluid Mechanics
Numerical investigation of thermal mixing of shear thinning fluids in one-way opposing jets

P. R. Mashaei Mashaei; S. M. Hosseinalipour; K. Esmailpour

Volume 3, Issue 2 , June 2014, , Pages 95-103


  In recent years, impinging streams have received increasing interest for their high efficiency in heat and mass transfer. This numerical study was conducted to investigate flow and heat transfer characteristics of one-way opposing jets of non-Newtonian fluids. Effects of Reynolds number impinging angle, ...  Read More

Heat and Mass Transfer
Effects of temperature gradient magnitude on bending angle in laser forming process of aluminium alloy sheets

Amir H. Roohi; H. Moslemi Naeini; M. Hoseinpour Gollo; J. Shahbazi Karami; Sh. Imani Shahabad

Volume 5, Issue 2 , June 2016, , Pages 97-109


  Laser forming is a thermal forming process which uses laser beam irradiation to produce the desired final forms. In this article, the effect of temperature gradient across  Al 6061-T6 aluminum sheets on bending angle is studied. Input parameters including laser power, scan velocity, beam diameter, ...  Read More

Fracture Mechanics
Prediction of forming limit curves (FLD, MSFLD and FLSD) and necking time for SS304L sheet using finite element method and ductile fracture criteria

Kamal Kolasangiani; Mahmoud Shariati; Khalil Farhangdoost

Volume 4, Issue 2 , June 2015, , Pages 121-132


  Forming limit curves are used as a parameter in finite element analysis to control the material's level of formability. In this research, forming limit diagram (FLD) of SS304L sheet was obtained by ABAQUSfinite element software. In practice, the experimental determination of a forming limit curve is ...  Read More

Fuzzy motion control for wheeled mobile robots in real-time

Mohammad Falsafi; Khalil Alipour; Bahram Tarvirdizadeh

Volume 8, Issue 2 , February 2019, , Pages 133-144


  Due to various advantages of Wheeled Mobile Robots (WMRs), many researchers have focused to solve their challenges. The automatic motion control of such robots is an attractive problem and is one of the issues which should carefully be examined. In the current paper, the trajectory tracking problem of ...  Read More

Computational Fluid Dynamics (CFD)
A comprehensive numerical investigation of the effects of inlet operating conditions on the performance of 3-fluid liquid-to-air membrane energy exchangers

Nader Pourmahmoud; Aydin Zabihi

Volume 13, Issue 2 , March 2024, , Pages 137-156


  3-fluid liquid-to-air membrane energy exchangers (LAMEEs) are economic dehumidification systems; cooling tubes are put into dehumidifier liquid channels to regulate the internal temperature of the dehumidifier liquid. 3D computational fluid dynamics is used to simulate a 3-fluid LAMEE, and extra transfer ...  Read More

Energy Systems
Thermodynamic analysis of a hybrid absorption two-stage compression refrigeration system employing a flash tank with indirect subcooler

Armin Emamifar

Volume 12, Issue 2 , February 2023, , Pages 145-159


  In this research, the thermodynamic analysis of a two-stage absorption compression refrigeration system employing a flash tank with indirect subcooler is presented. The absorption cycle uses LiBr-water solution as the working fluid and prepares the high temperature medium for the bottoming cycle, which ...  Read More

Computational Fluid Dynamics (CFD)
Comparison of three different numerical schemes for 2D steady incompressible lid-driven cavity flow

Siamak Gharahjeh; Ammar Ashraf; Ghorban Mahtabi

Volume 7, Issue 2 , March 2018, , Pages 151-160


  In this study, a numerical solution of 2D steady incompressible lid-driven cavity flow is presented. Three different numerical schemes were employed to make a comparison on the practicality of the methods. An alternating direction implicit scheme for the vorticity-stream function formulation, explicit ...  Read More

Composite Materials
Effects of the asymmetric behavior of the shape memory alloy on nonlinear dynamic responses of thick sandwich plates with embedded SMA wires

Aidin Ghaznavi; Mohammad Shariyat

Volume 9, Issue 2 , February 2020, , Pages 183-197


  In the present article, the dynamic behavior of sandwich plates with embedded shape memory alloy (SMA) wires is evaluated for two cases wherein (i) the stress-strain curve of the superelastic behavior of the SMA wires is symmetric and (ii) the mentioned curve is non-symmetric. A modified version of Brinson’s ...  Read More

Multi-objective particle swarm optimization of WEDM process parameters for inconel 825

P. Kumar; M. Gupta; V. Kumar

Volume 10, Issue 2 , April 2021, , Pages 291-309


  With the increased diversity of the customer demand and complexity of the product, Inconel 825 is widely used to meet the actual needs, especially in the aerospace industry. It is difficult-to-cut material because of its high toughness and hardness. The present research attempts to optimize the process ...  Read More

Composite Materials
Numerical investigating of the effect of material and geometrical parameters on the static behavior of sandwich plate

Aidin Ghaznavi; Mohammad Shariyat

Volume 11, Issue 2 , March 2022, , Pages 297-315


  Studying the behavior of sandwich panels is very important due to their widespread use in different industries. Therefore, over the past decades, various theories have been proposed to study the behavior of these panels. In this paper a higher order global-local theory with 3D equilibrium-based corrections ...  Read More

Energy Science and Technology
Improvement of energy efficiency and heat recovery performance within the paper machine drying section

Shaaban Ghodbanan; Reza Alizadeh; Sirous Shafiei; Javad Rahbar Shahrouzi

Articles in Press, Accepted Manuscript, Available Online from 04 February 2024


  In this study the energy assessment and heat recovery analysis of multi-cylinder drying section were carried out in a fluting paper machine. The specific heat consumption per unit of paper was determined to be about 4.7 GJ per ton of paper and accordingly, the machine consumed about 1.71 tons steam per ...  Read More