The vortical structures in the rear separation and wake region produced by a micro-ramp that immersed in a supersonic turbulent boundary layer are investigated. The small scale separation was reveled close to the trailing edge and confirms the previous experimental observation. Between the reverse region and surrounding fast moving flow, a three-dimensional shear layer was formed, where vortice...

Some recent work on the flow induced by uniform or non-uniform magnetic fields acting on currents in an electrochemical cell is reviewed. The effects include modifying the structure and texture of electrodeposits including their chirality, controlling hydrogen bubble release, inducing microfluidic flow and influencing nucleation. Much of this depends on micro-magnetohydrodynamic flow, on a scal...

Due to its variety of advantages offered, the progress of the studies on micro devices used in chemical analysis is observed. The micro heat exchangers are well recognized for their higher performance. The applications of them are ranging from increasing of heat transfer applications to chemical reactions or evaporation of liquids applications. The current paper is addressing an engineering app...

Two-phase flow regimes are affected by conduit position, alignment, geometry, flow direction, physical characteristics, and flow rate of each phase as well as the heat flux toward the boundaries. Due to the importance of two-phase flow, numerous regimes have been identified. The first step in studying micro-bubble formation inside a venturi tube is to recognize the type of flow regimes. In this...

In this study, electro-thermo-mechanical nonlinear vibration and instability of embedded piezoelectric micro-tube is carried out based on nonlocal theory and nonlinear Donnell's shell model. The smart micro-tube made of Poly-vinylidene fluoride (PVDF) is conveying an isentropic, incompressible fluid. The detailed parametric study is conducted, focusing on the remarkable effects of mean flow vel...

Micro-organisms play a vital role in many biological, medical and engineering phenomena. Some recent research efforts have demonstrated the importance of biomechanics in understanding certain aspects of micro-organism behaviours such as locomotion and collective motions of cells. In particular, spatio-temporal coherent structures found in a bacterial suspension have been the focus of many resea...

When ions are driven by an external electrostatic field, their net motion will generate a net flow in the surrounding fluid called electro-osmotic flux. In microfluidic devices, the onset of such a flux ultimately depends on the effective interaction between the fluid and the inner walls of the channel. In particular novel scenarios can occur when the channel properties are not homogeneous, as ...

In this paper we review recent progress made to understand granular chutes flow using multi-scale modeling techniques. We introduce the discrete particle method (DPM) and explain how to construct continuum fields from discrete data in a way that is consistent with the macroscopic concept of mass and momentum conservation. We present a novel advanced contact detection method that is able of deal...

Traditional TCP traffic modeling has focused on “micro-scale” modeling of TCP, i.e., detailed modeling of a single TCP flow. While micro-scale models of TCP are suitable for understanding the precise behavior of individual flows, they are not well suited to the situation when a large number of TCP flows interact with each other as is the case in realistic networks. In this survey, we present se...

3 1 Computational Homogenization Approach Micro-scale Boundary Conditions 32 3 2 Micro-Macro linking Transferring Fluxes and Diffusivities 36 3 3 Micro-scale model 37 3 3 1 Description of flow in the porous matrix at micro-scale 38 3 4 Macro scale model 41 3 5 Tracking of the interface using level set method and adaptive meshing 46 3 6 Computational approach and Numerical Results 47 3 6 1 Conve...