Flow visualization in a malodor absorption system with porous baffles and a rotating disk drum via a PIV technique

2016 ◽  
pp. 399-402
Author(s):  
J Lee ◽  
K Kim ◽  
H Ali ◽  
C Park
Keyword(s):  
Flow Visualization ◽  
Rotating Disk ◽  
Absorption System ◽  
Piv Technique

Experimental Analysis and Flow Visualization of a Thin Liquid Film on a Stationary and Rotating Disk

1991 ◽  
Vol 113 (1) ◽  
pp. 73-80 ◽  
Author(s):  
S. Thomas ◽  
A. Faghri ◽  
W. Hankey
Keyword(s):  
Free Surface ◽  
Film Thickness ◽  
Liquid Film ◽  
Flow Visualization ◽  
Thin Liquid Film ◽  
Rotating Disk ◽  
Radial Spreading ◽  
Frictional Forces ◽  
The Mean ◽  
The Waves

The mean thickness of a thin liquid film of deionized water with a free surface on a stationary and rotating horizontal disk has been measured with a nonobtrusive capacitance technique. The measurements were taken when the rotational speed ranged from 0–300 rpm and the flow rate varied from 7.0–15.0 lpm. A flow visualization study of the thin film was also performed to determine the characteristics of the waves on the free surface. When the disk was stationary, a circular hydraulic jump was present on the disk. Upstream from the jump, the film thickness was determined by the inertial and frictional forces on the fluid, and the radial spreading of the film. The surface tension at the edge of the disk affected the film thickness downstream from the jump. For the rotating disk, the film thickness was dependent upon the inertial and frictional forces near the center of the disk and the centrifugal forces near the edge of the disk.

Heat Transfer Between an Impinging Jet and a Rotating Disk

1977 ◽  
Vol 99 (4) ◽  
pp. 663-667 ◽  
Author(s):  
D. E. Metzger ◽  
L. D. Grochowsky
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Flow Visualization ◽  
Flow Regime ◽  
Cross Flow ◽  
Impinging Jet ◽  
Rotating Disk ◽  
Transfer Rates ◽  
Flow Regime Transition ◽  
Flow Interaction

An experimental study of the flow interaction and heat transfer between a single impinging jet and a rotating disk is presented. Tests were conducted over a range of jet flowrates, impingement radii, and disk rotational speeds with various combinations of three jet and three disk sizes. Flow visualization using smoke addition to the jet flow reveals the presence of a flow regime transition which is correlated in terms of the rotationally induced disk pumping flow acting as a cross-flow influence on the jet. Higher rotational speeds, larger impingement radii, and smaller jet flowrates favor a rotationally dominated flow interaction whereas the opposite trends favor an impingement dominated interaction. Heat transfer rates are essentially independent of jet flowrate in the rotationally dominated regime, but increase, strongly with increasing flowrate in the impingement dominated regime.

On flow visualization using reflective flakes

1985 ◽  
Vol 152 ◽  
pp. 235-248 ◽  
Author(s):  
Ö. Savaş
Keyword(s):  
Wave Packet ◽  
Viscous Fluid ◽  
Flow Visualization ◽  
Small Amplitude ◽  
Rotating Disk ◽  
Turbulent Spot ◽  
Rational Analysis ◽  
Ellipsoidal Particles ◽  
Parallel Flows ◽  
Tollmien Schlichting

An analysis of flow visualization using small reflective flakes is introduced. This rational analysis is based on a stochastic treatment of Jeffery's (1922) solution for the motion of ellipsoidal particles in a viscous fluid, wherein thin flakes tend to align with stream surfaces. The predicted light fields are confirmed by examples of parallel flows, the flow over a rotating disk, and the spinup from rest in a cylindrical cavity. The Tollmien–Schlichting wave packet trailing a turbulent spot is taken as an example to discuss the suitability of the technique for visualizing small-amplitude waves. Attenuation of light through a suspension is described.

scholarly journals Flow visualization over a thick blunt trailing-edge airfoil with base cavity at low Reynolds numbers using PIV technique

2016 ◽  
Vol 20 (4) ◽  
pp. 695-710 ◽  
Author(s):  
Gholamhossein Taherian ◽  
Mahdi Nili-Ahmadabadi ◽  
Mohammad Hassan Karimi ◽  
Mohammad Reza Tavakoli
Keyword(s):  
Flow Visualization ◽  
Reynolds Numbers ◽  
Trailing Edge ◽  
Low Reynolds Numbers ◽  
Blunt Trailing Edge ◽  
Piv Technique ◽  
Base Cavity ◽  
Low Reynolds

Flow Visualization of a Wave Packet on a Rotating Disk

1990 ◽  
pp. 306-318 ◽  
Author(s):  
S. P. Wilkinson ◽  
A. E. Blanchard ◽  
G. Selby ◽  
M. Gaster ◽  
T. Tritz ◽  
...  
Keyword(s):  
Wave Packet ◽  
Flow Visualization ◽  
Rotating Disk

Interstage Disk-Cavity/Brush Seal Numerical Flow Visualization Study

1995 ◽  
Author(s):  
V. V. Kudriavtsev ◽  
M. J. Braun
Keyword(s):  
Flow Visualization ◽  
Secondary Flow ◽  
Stokes Equations ◽  
Rotating Disk ◽  
Flow Path ◽  
Dynamics Simulation ◽  
Navier Stokes ◽  
Brush Seal ◽  
Collocated Grid ◽  
Primitive Variables

This paper presents work-in-progress results and model developments that are directed towards the computational fluid dynamics simulation of the secondary flow system in a gas turbine engine. Numerical flow visualization results of the 2-D axisymmetric rotational fluid flow (Re=105) in a generic cross section of an interstage turbine cavity are displayed. The core flow is driven by an imposed pressure drop along the vane row of the main flow path. Three interconnected disk cavities separated by a brush seal are located along the secondary flow path. A new computational algorithm was developed in order to predict the flow patterns and leakages for different seal and cavity configurations. The code is based on the numerical solution of the transient laminar Navier-Stokes equations, written in primitive variables and approximated on a nonuniform rectangular collocated grid. The program uses a mass and momentum conservative formulation as well as a set of boundary conditions for pressure and conservation of mass. The pressure solution uses the Poisson equation under a direct implementation procedure. A time dependent Alternating Direction Implicit (ADI) method is also used for the solution of all primitive variables. This integrated computational approach allows the simulation of the rotating disk cavity vortex flow periodic features, as well as their impact on leakage flow and sealing effectiveness. In the present study this approach is used to numerically investigate the flow through the brush. The main purpose of this study is to present an integrated brush seal/disk cavity flow model, to demonstrate the effectiveness of this approach, and to emphasize the necessity for further work in this direction.

Flow Visualization of Arteriovenous Grafting Using PIV Technique

2013 ◽  
Vol 37 (11) ◽  
pp. 985-990 ◽  
Author(s):  
Min-Gyu Jeon ◽  
Hyoung-Ho Kim ◽  
Sang-Ho Suh ◽  
Young Ho Choi ◽  
Hyun-Jin Lee ◽  
...  
Keyword(s):  
Flow Visualization ◽  
Piv Technique

A Study on Ekman Spirals on a Rotating Disk in Spin Coating System (1st Report, Flow Visualization and Hot-Wire Measurement)

2004 ◽  
Vol 2004.57 (0) ◽  
pp. 233-234
Author(s):  
Seiichi KIMURA ◽  
Taichiro MORI ◽  
Kazuyoshi MATSUZAKI ◽  
Mizue MUNEKATA ◽  
Hiroaki KURISHIMA ◽  
...  
Keyword(s):  
Flow Visualization ◽  
Spin Coating ◽  
Rotating Disk ◽  
Coating System ◽  
Hot Wire
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