Flow around bridge piers.

Doğan, Ahmet


Flow Around Helicopter Blade Tip Sections Using a 3D Stereoscopic Particle Image Velocimeter Part II
Kahveci, Harika Senem (null; 2006-12-01)
The present investigation deals with the detailed aerodynamic flow near a rotating helicopter rotor blade. Three-component velocity measurements using a Stereoscopic Particle Image Velocimetry system reveal the details of the near tip flow at various blade angle-of-attack values. The instantaneous flow in selected planes that are almost normal to the rotor blade tips is measured in a phaselocked manner as observed from the stationary frame. A model helicopter with a two-bladed rotor is utilized for experime...
Flow Around Helicopter Blade Tip Sections Using a 2D Particle Image Velocimeter Part I
Kahveci, Harika Senem (null; 2006-12-01)
The current study is an effort to better understand the viscous flow physics existing near helicopter blade tips at various angle of attack positions. A planar particle image velocimeter (PIV) was successfully integrated into the helicopter blade tip flow measurement system in a model hover stand The current study utilizes a 1200 mm (47.24 in) diameter scaled helicopter rotor blade system with a 'collective pitch control' capability for flow field measurements. Downwash and upwash behavior at the sections o...
Göğüş, Mustafa (1994-01-01)
Several types of flow-measurement structures are used in rivers. One of the more common flow-measurement structures is the critical-depth flume. By definition, the velocity increases through the contracted section of the flume, which, in turn, minimized deposition of sediment in the structure. Critical-depth flumes are preferred in rivers where sediment transport through the structure is substantial. Dimensioning of these flumes for sediment-free flow conditions over the structure has not yet been studied. ...
Flow in a rectangular duct under the influence of the magnetic field
Şenel, Pelin; Tezer, Münevver (null; 2015-07-13)
Flow around a suddenly accelerated rotating plate at low Reynoldsnumber
Perçin, Mustafa; Van Oudheusden, Bas W. (null; 2014-07-07)
The study explores the evolution of flow field and forces of a low-aspect-ratio flat plate undergoing an accelerated rotating surge motion from rest. The measurements were performed in a water tank at Reynolds numbers of 20,000, based on the chord length and terminal velocity at 75% span. A tomographic Particle Image Velocimetry (Tomographic-PIV) technique was used in order to capture three-dimensional velocity fields at different phases of the rotational motion, in combination with direct force measurement...
Citation Formats
A. Doğan, “Flow around bridge piers.,” Middle East Technical University, 1993.