this paper investigates the lateral vibration of single-layered graphene sheets based on a new theory called doublet mechanics with a length scale parameter. after a brief reviewing of doublet mechanics fundamentals, a sixth order partial differential equation that governs the lateral vibration of single-layered graphene sheets is derived. using doublet mechanics, the relation between natural f...

in many industrial equipment such as boilers and heat exchangers, the cylindrical tubes are exposed to the gas- liquid two phase flow. for any immersed body in flow field vortex shedding is created with a frequency that may be constant or variable, according to conditions such as flow rates, geometry of body, and etc. the failure will happen in the equipment, when this frequency is close to one...

For centuries, dome roofs were used in traditional houses in hot regions such as the Middle East and Mediterranean basin due to its thermal advantages, structural benefits and availability of construction materials. This article presents the computational modelling of the windand buoyancy-induced ventilation in a geodesic dome building in a hot climate. The airflow and temperature distributions...

The aim of the present study was to develop a tissue-engineering approach through alginate gel molding to mimic cartilage tissue in a three-dimensional culture system. The perfusion biomimetic bioreactor was designed to mimic natural joint. The shear stresses exerting on the bioreactor chamber were calculated by Computational Fluid Dynamic (CFD). Several alginate/bovine chondrocyte constructs w...

Aerodynamic performance and agility during flapping flight are determined by the combination of wing shape and kinematics. The degree of morphological and kinematic optimisation is unknown and depends upon a large parameter space. Aimed at providing an accurate and computationally inexpensive modelling tool for flapping-wing aerodynamics, we propose a novel CFD (computational fluid dynamics)-in...

mechan ics (ICFM) to a s t a t e o f p r a c t i c a l a p p l i c a t i o n for aerospace p r o p u l s i o n systems. The s t r a t e g i e s used to a c h i e v e t h i s g o a l a r e t o (1) pu rsue an u n d e r s t a n d i n g o f f low p h y s i c s , s u r f a c e h e a t t r a n s f e r , and combus t ion v i a a n a l y s i s and fundamental exper imen ts , ( 2 ) i n c o r p o r a t e...

mechan ics (ICFM) to a s t a t e o f p r a c t i c a l a p p l i c a t i o n for aerospace p r o p u l s i o n systems. The s t r a t e g i e s used to a c h i e v e t h i s g o a l a r e t o (1) pu rsue an u n d e r s t a n d i n g o f f low p h y s i c s , s u r f a c e h e a t t r a n s f e r , and combus t ion v i a a n a l y s i s and fundamental exper imen ts , ( 2 ) i n c o r p o r a t e...

Computational Fluid Dynamics (CFD) applications are highly demanding for parallel computing. Many such applications have been shifted from expensive MPP boxes to cost-effective clusters. Auto-CFD is a pre-compiler which transforms Fortran CFD sequential programs to efficient message-passing parallel programs running on clusters. Our work has the following three unique contributions. First, this...

Neuronal oscillations support cognitive processing. Modern views suggest that neuronal oscillations do not only reflect coordinated activity in spatially distributed networks, but also that there is interaction between the oscillations at different frequencies. For example, invasive recordings in animals and humans have found that the amplitude of fast oscillations (>40 Hz) occur non-uniformly ...