Hossein Afshar

Hossein Afshar
Islamic Azad University East Tehran Branch · Department of Mechanical Engineering

Ph.D

About

13
Publications
1,697
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
91
Citations
Additional affiliations
February 2006 - present
Islamic Azad University East Tehran Branch
Position
  • Faculty Member

Publications

Publications (13)
Article
The thermo-fluid performance of static mixers was evaluated by numerical simulation of the flow field and heat transfer in turbulent flows. Four types of mixers_ namely: twisted tape turbulator, LPD, SMX, and KSM_ were studied at different Reynolds numbers. The validation of numerical results confirmed their agreement with the experimental results...
Preprint
Full-text available
This perusal attempts to model and interpret the entropy generation analysis and the flow field of 2-D, steady, viscous, incompressible and laminar boundary layer and forced convection heat transport of micropolar ferrofluid past a stretching sheet including suction and normal magnetic field effects. The porous sheet’s velocity and temperature are...
Chapter
The purpose of this chapter is to discuss the application of lasers and metal nanoparticles for the treatment of cancers with epithelial origin. The combination of laser therapy and nanoparticles in cancer treatment includes four major sections: (1) Cancer (2) Principals of nanotechnology (3) Principles of laser (4) Combination of laser and nanopar...
Article
Full-text available
In this investigation, effects of dispersed Cu nanoparticles in water on heat transfer coefficients are studiedusing Eulerian-Lagranigian approach. Nanoparticles disperse in the fluid due to drag, weight and Brownianforces acting on them. A new particle search algorithm is used to trace the particles in every time step.Thermal coupling between disp...
Article
Full-text available
Sudden valve closure in pipeline systems can cause high pressures that may lead to serious damages. Using an optimal valve closing rule can play an important role in managing extreme pressures in sudden valve closure. In this paper, an optimal closing rule curve is developed using a multi-objective optimization model and Bayesian networks (BNs) for...
Article
In this paper, two phase heat transfer of a mixture of nanopaticles in air flow as a type of nanofluid is studied. Volume fraction of the dispersed phase is very low (less than 1%). Nanoparticles travel in the base fluid due to drag, brownian and gravity forces and are tracked according to lagrangian approach. Effect of reduced specific heat of nan...
Conference Paper
Evaluating the particle location in particle-laden flows is the most important parameter for calculating the two-phase flow parameters and also controls the computational time. In heat conducting nanofluids the volume fraction of particles is typically less than 3%. Nevertheless the their effect on heat transfer is important. In this paper, a new m...
Article
If the hydrodynamic diameter of a channel is comparable with the mean free path of the gas molecules moving inside the channel, the fluid can no longer be considered to be in thermodynamic equilibrium and a variety of non-continuum or rarefaction effects can occur. To avoid enormous complexity and extensive numerical cost encountered in modeling of...
Article
In this study, the flow field about a complete flying-boat in ground effect is resolved. The influences of using winglet in ground and out of ground effects are compared and it is shown that ground affects this influence to a large extent. It is also shown that with careful shaping of the body and using a step underneath the body a propulsive force...
Conference Paper
Full-text available
Water hammer is known as a phenomenon that has adverse effects on pipelines. Closing rate of valves plays an important role in controlling this phenomenon. In the water hammer process, the water pressure rise and water discharge are inversely correlated. Therefore, a tradeoff curve (Pareto front) between water pressure rise and water discharge can...
Conference Paper
The effect of different parameters on dispersion of nanoparticles in a microchannel in slip flow regime is studied. The equations of particle motion and energy balance are solved numerically and the effect of particle diameter, starting position of particles in microchannel, and slip coefficient on dispersion of particles is discussed. Radiative he...

Network

Cited By