This study proposes a soft robotic device with slim and flexible body that switches between air blowing suction single airflow control. Suction is achieved by jet flow entraining surrounding air, blocking reversing flow. The thin flap gate enables the switching. Air blocked while closed passes through open. opening closing of are controlled expansion inflatable chambers installed near gate. ext...

The results of experimental study of plasma-based mixing, ignition and flameholding in a supersonic model combustor are presented in the paper. The model combustor has a length of 600 mm and cross section of 72 mm width and 60 mm height. The fuel is directly injected into supersonic airflow (Mach number M=2, static pressure P(st)=160-250 Torr) through wall orifices. Two series of tests are focu...

Voice production involves sound generation by a confined jet flow through an orifice (the glottis) with a time-varying area. Predictive models of speech production are usually based on the so-called quasi-steady approximation. The flow rate through the time-varying orifice is assumed to be the same as a sequence of steady flows through stationary orifices for wall geometries and flow boundary c...

A water jet machining is an industrial tool capable of cutting a wide variety of materials using a very high-pressure jet of water, or a mixture of water and an abrasive substance. This paper addresses the concept of the Intelligent knowledge base system (IKBS) for optimization of product design and manufacturing process for water jet machining in computer based concurrent engineering environme...

Simulations of bifurcated three-dimensional laminar forced convection in horizontal duct with plane symmetric sudden expansion are presented to illustrate the effects of flow bifurcations on temperature and heat transfer distributions. The stable bifurcated flow that develops in this symmetric geometry leads to non-symmetric temperature and heat transfer distributions in the transverse directio...

Title of dissertation: DIRECT NUMERICAL SIMULATIONS OF TRANSITIONAL PULSATILE FLOWS IN STENOTIC VESSELS Nikolaos Beratlis Doctor of Philosophy, 2008 Dissertation directed by: Professor Elias Balaras Department of Mechanical Engineering In the present work a numerical study of transitional pulsatile flow through planar and cylindrical constrictions is presented. First, a simulation carefully coo...