Two-point velocity correlation measurements were made in the anisotropic flow field of an axisymmetric sudden expansion using two single component LDV systems. The integral length scales and Taylor microscales were estimated and compared with those obtained from auto correlation measurements in conjunction with Taylor's hypothesis. The agreement of the integral scales was within 20% and the values scale well with the flow geometry, while the agreement of the microscales was within 43%.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
Gould RD; Benedict LH (1992) A comparison of spatial correlation and autocorrelation measurements in an axisymmetric sudden expansion flow using LDV, The 13th Symposium on Turbulence, Rolla, Missouri, Sept. 21–23
Hinze JO (1975) Turbulence. McGraw-Hill
Mayo WT; Shay MT; Ritter S (1974) The development of new digital data processing techniques for turbulence measurements with laser velocimetry. AEDC-TR-74-53
Srikantaiah DV; Coleman HW (1985) Turbulence spectra from individual realization laser velocimetry data. Exp Fluids 3: 35–44
About this article
Cite this article
Gould, R.D., Benedict, L.H. Comparison of length scale estimates for a sudden expansion flow estimated from spatial and auto correlation LDV measurements. Experiments in Fluids 17, 285–287 (1994). https://doi.org/10.1007/BF00203049
- Auto Correlation
- Correlation Measurement
- Integral Scale
- Sudden Expansion
- Scale Estimate