Comparative study on the orifice induced velocity field /

Download
2014
Çelebi, Sonat
Orifices are important devices used in many hydraulic engineering applications. Therefore, investigation of flow characteristics upstream of orifices is a quite important phenomenon. One of the solution approaches is the potential flow solution. In this st udy, two different potential flow solutions presented by Shammaa et. al. and Bryant et. al are investigated and compared with the solution obtained by using computational fluid dy namics software, FLUENT. Both inviscid and volume of fluid (VOF) methods are used for the FLUENT solution. Solutions for the orifice induced velocity field upstream of the orifice are presented.

Suggestions

Analysis of hypersonic flow using three dimensional navier-stokes equations
Özgün, Muharrem; Eyi, Sinan; Department of Aerospace Engineering (2016)
Metallic materials in aerospace structures are exposed to impact type loads depending on their usage area. High strain rate material characterization of metallic materials is very crucial to properly prepare finite element models to be used in impact loading situations. Johnson-Cook material model is a suitable material model to represent the behaviour of metallic materials at high strain rates. In the present thesis study, parameters of the Johnson-Cook material model for Al 7075-T651 are determined utiliz...
Analysis and Control of Complex Flows in U-Bends using Computational Fluid Dynamics
Guden, Yigitcan; Yavuz, Mehmet Metin (2014-08-07)
Analysis and control of flow structure in U-bends are crucial since U-bends are used in many different engineering applications. As a flow parameter in U-bends, the ratio of inertial and centrifugal forces to viscous forces is called as Dean number. The increase of Dean number destabilizes the flow and leads to a three-dimensional flow consisting of stream wise parallel counter-rotating vortices (Dean vortices) stacked along the curved wall. Due to the curvature in U-bends, the flow development involves com...
A new look at oxide formation at the copper/electrolyte interface by in situ spectroscopies
Toparlı, Çiğdem; Erbe, Andreas (2015-01-01)
The widely used engineering material copper is a prototype of an electrochemically passive metal. In this work, the passive films on evaporated copper in 0.1 M NaOH are investigated in situ and operando by spectroscopic ellipsometry and Raman spectroscopy, both conducted during oxidation in potentiostatic step experiments. Oxide growth is initiated by jumping from a potential at which the surface is oxide-free to -0.1 V vs. Ag vertical bar AgCl vertical bar 3 M KCl (+0.11 V vs. standard hydrogen electrode, ...
Laboratory investigation of hydraulic efficiency of transverse grates in roads
Özbey, Cumhur; Tiğrek, Şahnaz; Department of Civil Engineering (2015)
In this study, hydraulic efficiency of transverse grated inlet systems to be used in small roads is experimentally investigated. For this purpose, an existing experimental setup in the Hydromechanics Laboratory of METU is utilized. Three sets of experiments are conducted in order to examine the relationship between the total flow rate and the grate efficiency with respect to several parameters. In the first set, the interdependence of the void ratio and grate efficiency is investigated. In the second set of...
A new formulation for the analysis of elastic layers bonded to rigid surfaces
Pinarbasi, Seval; Akyüz, Uğurhan; Mengi, Yalcin (Elsevier BV, 2006-07-01)
Elastic layers bonded to rigid surfaces have widely been used in many engineering applications. It is commonly accepted that while the bonded surfaces slightly influence the shear behavior of the layer, they can cause drastic changes on its compressive and bending behavior. Most of the earlier studies on this subject have been based on assumed displacement fields with assumed stress distributions, which usually lead to "average" solutions. These assumptions have somehow hindered the comprehensive study of s...
Citation Formats
S. Çelebi, “Comparative study on the orifice induced velocity field /,” M.S. - Master of Science, Middle East Technical University, 2014.