This research includes both experimental and CFD investigation in the hydrodynamic behavior of a new type of column tray introduced as “Concap” tray. The proposed column tray is used in contactor columns especially in stripping columns. The hydrodynamics of this Concap tray is investigated in a 1.2m in diameter column. Using air-water system, the experiments were performed for different liquid ...

The aim of this study was to examine the effects of tray design and impression material on impression pressure in a clinical simulation model of an edentulous mandible. Two types of polyvinylsiloxane elastomer, one type of polyether elastomer, and one type of alginate were used. The three tray types had no relief, 0.36 mm of relief, or 1.4 mm of relief, with or without escape holes. Impression ...

Nowadays distillation is recognized as one of the economical and the most trustable separation methods in chemical, petroleum, gas and petrochemical industries. It is almost used as a first and the most applicable choice in separation methods. In this article the effect of inlet downcomer on the hydrodynamics of industrial sieve tray has been elaborated. The study was carried out by using a 3-D...

A general mathematical model based on the principal of non-equilibrium thermodynamics is proposed for analyzing the energy consumption of trayed column distillation processes related the tray structures, which can be used not only to calculate the energy consuming in different operational conditions, but also, and more importantly, to evaluate the entropy generation rate (EGR) of the different ...

This manuscript describes how a generic splitting tower of a regular anisotropic quadratic form digests the form down to a form which is totally

This paper presents a fast algorithm for corner detection based on the observation that the total curvature of the grey-level image is proportional to the second order directional derivative in the direction tangential to edge normal, and inversely proportional to the edge strength (norm of the edge normal). This algorithm simply takes the difference of the second tangential derivative with the...

In this study the operational speed of screw based pick and place mechanism was compared with that a crank-rocker analytically for design seeding machine system rice intensification (SRI) seedling tray. The configurations two types mechanisms were generated on their positions relative to tray conveyor size manifold. consists vertical which manifold mounted horizontal mounted. bearing reciprocat...

This paper addresses an experimental investigation in the hydrodynamic behavior of a modified slotted sieve tray. Slotted sieve tray (Push valve sieve tray) is a sieve tray that the push valves have been utilized on the tray deck to eliminate liquid gradients and non-uniformity of liquid distribution on the tray. The air-water system was used in an industrial scale experimental rig with an inte...

Based on a new approach on modeling the magnetically dominated outflows from AGNs (Li et al. 2006), we study the propagation of magnetic tower jets in gravitationally stratified atmospheres (such as a galaxy cluster environment) in large scales (> tens of kpc) by performing three-dimensional magnetohydrodynamic (MHD) simulations. We present the detailed analysis of the MHD waves, the cylindrica...