Effect of six non-Newtonian viscosity models on hemodynamic parameters of pulsatile blood flow in stenosed artery

Mehdi Jahangiri; Mohsen Saghafian; Mahmood Reza Sadeghi

Volume 7, Issue 2 , March 2018, , Pages 199-207

  A numerical study of hemodynamic parameters of pulsatile blood flow is presented in a stenotic artery with A numerical study of hemodynamic parameters of pulsatile blood flow is presented in a stenotic artery with non-Newtonian models using ADINA. Blood flow was considered laminar, and the arterial ...  Read More

Micro and Nano Systems
Thermo-elastic damping and anchor loss in the operational modes of a hemispherical shell resonator

Aylar Khooshehmehri; Abdollah Eslami Majd; Elham Arabsheybani

Volume 12, Issue 2 , February 2023, , Pages 211-224

  The hemispherical resonator gyro (HRG) is a type of precision inertial sensor that has the advantages of direct angle measurement and unlimited dynamic range. The overall accuracy of the HRG is due to the quality of its resonator shell, and improving the performance of resonators requires a proper understanding ...  Read More

Composite Materials
High-velocity impact properties of multi-walled carbon nanotubes/E-glass fiber/epoxy anisogrid composite panels

Hamed Khosravi; Reza Eslami-Farsani

Volume 9, Issue 2 , February 2020, , Pages 235-243

  This work reports the high-velocity impact response of multiscale anisogrid composite (AGC) panels. The aim of the present study is to evaluate the influence of surface-modified multi-walled carbon nanotubes (S-MWCNTs) at different S-MWCNTs contents (0-0.5 wt.% at an interval of 0.1 wt.%) on the high-velocity ...  Read More

Computational Fluid Dynamics (CFD)
Numerical analysis of microchannel based bio-inspired heat sinks with multiple inlet-outlet pairs for cooling square shaped circuits

Kandassamy K; Prabu Balakrishnan

Volume 10, Issue 2 , April 2021, , Pages 345-359

  Heat dissipation in electronic circuits is important to maintain their reliability and functionality. In this work, microchannel based bio-inspired flow field models are proposed and numerically analyzed. The proposed flow fields have single to four inlet-outlet pairs. COMSOL is used to do the numerical ...  Read More

Robust adaptive projection-based control of a constrained quadrotor with two manipulators

Mohammad Mohammadi; Reza Dehghani; Ali Reza Ahmadi

Volume 11, Issue 2 , March 2022, , Pages 351-364

  In this paper, a quadrotor with two manipulators constrained on a straight path is modeled and a robust adaptive controller is proposed for it. Adding two manipulators to quadrotor increases its capabilities and applications in industry. Here, these two manipulators are used to place the robot on a constraint ...  Read More

Assessment of different methods for fatigue life prediction of steel in rotating bending and axial loading

J. Amirian; H. Safari; M. Shirani; M. Moradi; S. Shabani

Volume 6, Issue 2 , June 2017, , Pages 57-68

  Generally, fatigue failure in an element happens at the notch on a surface where the stress level rises because of the stress concentration effect. The present paper investigates the effect of a notch on the fatigue life of the HSLA100 (­high strength low alloy) steel which is widely applicable in ...  Read More

Plates and Shells
Effect of boundary conditions on localized instability of the semi-infinite orthotropic plate
Volume 1, Issue 1 , December 2011, , Pages 59-68

  This paper is concerned with an investigation into the localized instability of a thin elastic orthotropic semi-infinite plate. In this study, a semi-infinite plate, simply supported on two edges and under different boundary conditions of clamped, hinged, sliding contact and free on the other edge, is ...  Read More

Composite Materials
Production method of rubber and sulfur FG composites

S. Mohammadi*; F. Abdi

Volume 2, Issue 1 , December 2012, , Pages 63-69

  In the presented work, sulfur concrete and rubber were used for producing functionally graded materials (FGM). The physical and mechanical properties of sulfur concrete and rubber were changed continuously across the thickness. On one side, there was just rubber and, on the other, there was pure sulfur; ...  Read More

Resonant frequency of bimorph triangular V-shaped piezoelectric cantilever energy harvester

Rouhollah Hosseini; Mohsen Hamedi

Volume 6, Issue 1 , December 2016, , Pages 65-73

  The concept of “energy harvesting” is to design smart systems to capture the ambient energy and to convert it to usable electrical power for supplying small electronics devices and sensors. The goal is to develop autonomous and self-powered devices that do not need any replacement of traditional ...  Read More

State of the art in friction stir welding and ultrasonic vibration-assisted friction stir welding of similar/dissimilar aluminum alloys

Satish S Chinchanikar; Vaibhav S Gaikwad

Volume 11, Issue 1 , September 2021, , Pages 67-100

  Researchers have worked on many facets of joining of similar/dissimilar aluminum alloys using different joining techniques and came up with their own recommendations. Friction Stir Welding (FSW) is widely preferred for joining aluminum alloys being an economical alternative to produce high-quality welds. ...  Read More

Finite element comparison of single, bi-layered and three-layered tube hydroforming processes

Gh. Payganeh; J. Shahbazi Karami; K. Malekzadeh Fard

Volume 2, Issue 2 , June 2013, , Pages 69-80

  In this paper, single, bi-layered and three-layered tube hydroforming processes were numerically simulated using the finite element method. It was found that the final bulges heights resulted from the models were in good agreement with the experimental results. Three types of modeling were kept with ...  Read More

Free vibrations analysis of a sandwich rectangular plate with electrorheological fluid core

M. M. Soleymani; M. A. Hajabasi; S. Elahi Mahani

Volume 5, Issue 1 , December 2015, , Pages 71-81

  In this paper, a rectangular sandwich plate with a constrained layer and an electrorheological (ER) fluid core is investigated. The rectangular plate is covered an ER fluid core and a constraining layer to improve the stability of the system. The two outer layers of the sandwich structure are elastic. ...  Read More

An Experimental Study on the process parameters of Incremental Forming of Explosively-Welded Al/Cu Bimetal

Mohammad Honarpisheh; Ahmad Gheysarian

Volume 7, Issue 1 , August 2017, , Pages 73-83

  Single point incremental sheet metal forming is a sheet metal forming process that forms products without the complex dies and tools with low cost. In this study, the incremental sheet metal forming process has been experimentally investigated on the explosively-welded Al/Cu bimetal sheets. Also, the ...  Read More

Fluid Mechanics
Derivation of turbulent energy in a rotating system

S. F. Ahmed

Volume 3, Issue 1 , December 2013, , Pages 75-83

  Energy equation for turbulent flow in a rotating system was derived in terms of second order correlation tensors, where the correlation tensors were functions of space coordinates, distance between two points and time. To reveal the relationship of turbulent energy between two points, one point was taken ...  Read More

Computational Fluid Dynamics (CFD)
Effect of Variable Thermal Conductivity and the Inclined Magnetic Field on MHD Plane Poiseuille Flow in a Porous Channel with Non-Uniform Plate Temperature

Muhim Chutia

Volume 8, Issue 1 , September 2018, , Pages 75-84

  The aim of this paper is to investigate the effect of the variable thermal conductivity and the inclined uniform magnetic field on the plane Poiseuille flow of viscous incompressible electrically conducting fluid between two porous plates Joule heating in the presence of a constant pressure gradient ...  Read More

Energy Systems
Thermodynamic optimization of an integrated gas turbine cycle, heat exchanger and organic Rankine cycle for co-generation of mechanical power and heating load

Mohammed Ridha Jawad Al-Tameemi; Samir Yahya; Saadoon Abdul Hafedh; Itimad D. J. AZZAWI

Volume 13, Issue 1 , September 2023, , Pages 75-88

  A thermodynamic evaluation is conducted on a combined heat and power system integrating a gas turbine (GT), a heat exchanger (HX1), and an organic Rankine cycle (ORC). Traditionally, ORC bottoming GT cycle is limited to mechanical power production. The novelty of this study is to recover wasted heat ...  Read More

Energy Science and Technology
Performance analysis of a combined cooling, heating and power system based on micro gas turbine from the point of view of exergy

Jamasb Pirkandi; Amirali Amiralaei; Mohammad Omian

Volume 12, Issue 1 , August 2022, , Pages 77-93

  In this research, a combined cooling, heating and power system (CCHP) has been analyzed from the perspective of entropy and exergy. The primary driver and the cooling system for this combined system consist of a micro gas turbine and a hot water lithium bromide single-effect absorption chiller, respectively. ...  Read More

Heat and Mass Transfer
Inclined Lorentzian force effect on tangent hyperbolic radiative slip flow imbedded carbon nanotubes: lie group analysis

Sreenivasulu Pandikunta; Vasu B; Poornima Tamalapakula; N Bhaskar Reddy

Volume 10, Issue 1 , September 2020, , Pages 85-99

  The present paper focuses on numerical study for an inclined magneto-hydrodynamic effect on free convection flow of a tangent hyperbolic nanofluid embedded with Carbon nanotubes (CNTs) over a stretching surface taking velocity and thermal slip into account. Two types of nanoparticles are considered for ...  Read More

Heat and Mass Transfer
Applying a full implicit finite-difference method in jet impingement heat transfer studies

M. Rahimi; M. Mortazaei

Volume 4, Issue 1 , December 2014, , Pages 89-99

  Jet impingement heat transfer is an effective and practical approach that is employed in many industrial processes where heating, cooling, or drying is required. Details of the heat or mass transfer rate have been investigated both experimentally and numerically and can be found in the published literature. ...  Read More

Fluid Mechanics
MHD thermal radiation and chemical reaction effects with peristaltic transport of the eyring-powell fluid through a porous medium

K VENU REDDY; M. Gnaneswara Reddy

Volume 9, Issue 1 , September 2019, , Pages 89-105

  In this paper, we analyze the thermal radiation and chemical reaction impacts on MHD peristaltic motion of the Eyring-Powell fluid through a porous medium in a channel with compliant walls under slip conditions for velocity, temperature, and concentration. Assumptions of a long wave length and low Reynolds ...  Read More

Fluid Mechanics
A review of dough rheological models used in numerical applications

S. M. S. M. Hosseinalipour; A. Tohidi; M. Shokrpour

Volume 1, Issue 2 , June 2012, , Pages 129-147

  The motivation for this work is to propose a first thorough review of dough rheological models used in numerical applications. Although many models have been developed to describe dough rheological characteristics, few of them are employed by researchers in numerical applications. This article reviews ...  Read More

Nonlinear static and dynamic behaviors of a microresonator under discontinuous electrostatic actuation

M. Zamanian; S. A. A. Hosseini

Volume 3, Issue 2 , June 2014, , Pages 145-159

  This article studied static deflection, natural frequency and nonlinear vibration of a clamped-clamped microbeam under discontinues electrostatic actuation. The electrostatic actuation was induced by applying AC-DC voltage between the microbeam and electrode plate. In contrast to previous works, it was ...  Read More

Perturbation Technique
A study on the use of perturbation technique for analyzing the nonlinear forced response of piezoelectric microcantilevers

M. Zamanian; M. Hadilu; B. Firouzi

Volume 5, Issue 2 , June 2016, , Pages 161-172

  In this paper, a comparison is made between direct and indirect perturbation approaches to solve the non-linear vibration equations of a piezoelectrically actuated cantilever microbeam. In this comparison, the equation of motion is considered according to Euler-Bernoulli theory with considering the non-linear ...  Read More

Manufacturing Processes
Investigating electrochemical drilling (ECD) using statistical and soft computing techniques

Mehdi Tajdari; Saeed Zare Chavoshi

Volume 4, Issue 2 , June 2015, , Pages 181-191

  In the present study, five modeling approaches of RA, MLP, MNN, GFF, and CANFIS were applied so as to estimate the radial overcut values in electrochemical drilling process. For these models, four input variables, namely electrolyte concentration, voltage, initial machining gap, and tool feed rate, were ...  Read More

Experimental analysis of shock waves turbulence in contractions with rectangular sections

Mohammad Reza Nikpour; payam khosravinia; Davod Farsadizadeh

Volume 8, Issue 2 , February 2019, , Pages 187-196

  Formation of shock waves has an important role in supercritical flows studies. These waves are often occurring during passage of supercritical flow in the non-prismatic channels. In the present study, the effect of length of contraction wall of open-channel for two different geometries (1.5 m and 0.5 ...  Read More