Time-resolved flow-velocity and concentration measurements using a traveling thermal lens

1985 ◽  
Vol 10 (9) ◽  
pp. 436 ◽  
Author(s):  
H. Sontag ◽  
A. C. Tam
Keyword(s):  
Flow Velocity ◽  
Thermal Lens ◽  
Time Resolved ◽  
Concentration Measurements

Time-resolved crossed-beam thermal lens measurement as a nonintrusive probe of flow velocity

1985 ◽  
Vol 24 (18) ◽  
pp. 2981 ◽  
Author(s):  
Wayne A. Weimer ◽  
Norman J. Dovichi
Keyword(s):  
Flow Velocity ◽  
Thermal Lens ◽  
Time Resolved

Soret effect in lyotropic liquid crystal in the isotropic phase revealed by time-resolved thermal lens

2020 ◽  
Vol 312 ◽  
pp. 113381
Author(s):  
G.M. Oliveira ◽  
V.S. Zanuto ◽  
G.A.S. Flizikowski ◽  
N.M. Kimura ◽  
A.R. Sampaio ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Thermal Lens ◽  
Soret Effect ◽  
Lyotropic Liquid Crystal ◽  
Isotropic Phase ◽  
Time Resolved

Flow Phenomena and Time Resolved Concentration Measurements in an Axial Flow Mixer

2002 ◽  
Author(s):  
Jared E. Campbell ◽  
Richard W. Coppom
Keyword(s):  
Near Field ◽  
Velocity Ratio ◽  
Axial Flow ◽  
Recent Theory ◽  
Flow Loop ◽  
Time Resolved ◽  
Concentration Variance ◽  
Jet Breakup ◽  
Flow Phenomena ◽  
Concentration Measurements

Experiments were conducted to better understand the flow physics associated with axial flow mixers in pipes. Specifically, the dependence of the downstream mixing evolution on the velocity ratio of the secondary to primary stream was explored. Experiments were conducted in a 25.4 mm diameter water pipe flow loop (25,700 ≤ RD ≤ 28,500), in which a fluorescein dye was coaxially injected. The injection tube diameter was 1.5 mm. Three velocity ratios, VR = 0.5, 1.0 and 2.0 were explored, where VR = Vjet/Vmain. The present results indicate that the effects of velocity ratio on the mean concentration are primarily evident in the near-field flow downstream of the injector, while concentration variance measurements indicate a primary influence at intermediate axial locations. Analysis of higher order moments and flow visualizations suggest that these influences are associated with the injected flow conditions. Two-dimensional LIF analysis of the coherent jet breakup region showed an instability in this transition related to injector flow Reynolds number. The present concentration measurements do not indicate the exponential variance decay commonly used for modelling mixing in pipes. Far field data exhibit low wavenumber motions as predicted by the recent theory of Guilkey et al. (1997).

Flame Concentration Measurements Using Picosecond Time-Resolved Laser-Induced Fluorescence

1994 ◽  
Vol 97 (4-6) ◽  
pp. 391-403 ◽  
Author(s):  
M. S. KLASSEN ◽  
B.D. THOMPSON ◽  
T.A. REICHARDT ◽  
G.B. KING ◽  
N.M. LAURENDEAU
Keyword(s):  
Laser Induced Fluorescence ◽  
Time Resolved ◽  
Concentration Measurements
Sign in / Sign up

Export Citation Format

Share Document