Three-Dimensional Flow Field Measurements in a Radial Inflow Turbine Scroll Using LDV

1987 ◽  
Vol 109 (2) ◽  
pp. 163-169 ◽  
Author(s):  
M. F. Malak ◽  
A. Hamed ◽  
W. Tabakoff
Keyword(s):  
Experimental Study ◽  
Flow Field ◽  
Flow Velocity ◽  
Three Dimensional ◽  
Field Measurements ◽  
Three Dimensional Flow ◽  
Cold Flow ◽  
Dimensional Flow ◽  
Through Flow ◽  
Radial Inflow Turbine

The results of an experimental study of the three-dimensional flow field in a radial inflow turbine scroll are presented. A two-color LDV system was used in the measurement of three orthogonal velocity components at 758 points located throughout the scroll and the unvaned portion of the nozzle. The cold flow experimental results are presented for through-flow velocity contours and the cross velocity vectors.

scholarly journals Transient Three-Dimensional Flow Field Measurements by Means of 3D µPTV in Drying Poly(Vinyl Acetate)-Methanol Thin Films Subject to Short-Scale Marangoni Instabilities

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1223
Author(s):  
Max Tönsmann ◽  
Philip Scharfer ◽  
Wilhelm Schabel
Keyword(s):  
Flow Field ◽  
Vinyl Acetate ◽  
Three Dimensional ◽  
Field Measurements ◽  
Initial Assessment ◽  
Ambient Conditions ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Short Scale ◽  
Dry Film

Convective Marangoni instabilities in drying polymer films may induce surface deformations, which persist in the dry film, deteriorating product performance. While theoretic stability analyses are abundantly available, experimental data are scarce. We report transient three-dimensional flow field measurements in thin poly(vinyl acetate)-methanol films, drying under ambient conditions with several films exhibiting short-scale Marangoni convection cells. An initial assessment of the upper limit of thermal and solutal Marangoni numbers reveals that the solutal effect is likely to be the dominant cause for the observed instabilities.

scholarly journals Three-Dimensional Flow Measurements in a Turbine Scroll

1984 ◽  
Vol 106 (2) ◽  
pp. 516-522 ◽  
Author(s):  
W. Tabakoff ◽  
B. V. R. Vittal ◽  
B. Wood
Keyword(s):  
Flow Velocity ◽  
Secondary Flow ◽  
Flow Behavior ◽  
Three Dimensional ◽  
Three Dimensional Flow ◽  
Flow Measurements ◽  
Dimensional Flow ◽  
Through Flow ◽  
Hot Film ◽  
Hot Film Anemometry

A study was conducted to determine experimentally the flow behavior in combined scroll nozzle assembly of a radial inflow turbine. Hot film anemometry technique was used to measure the three-dimensional flow velocity in the scroll. The through-flow and secondary flow velocity components are measured at various points in three scroll sections.

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