Time-Resolved Particle Image Velocimetry measurements at the Rotating pipe facility, KTH March 2012 Reference: Kalpakli, A., Örlü, R., and Alfredsson, P. H. "Dean vortices in turbulent flows: rocking or rolling?" Journal of Visualization, 2012, 15:37-38 http://dx.doi.org/10.1007/s12650-011-0108-8 Version 1.0, 08-Dec-2011 Measurements done by: Athanasia Kalpakli, Contact scientist: Athanasia Kalpakli, sissy@mech.kth.se Software used for the evaluation of the data: DaVis 7.2, LaVision, GmbH Interrogation Process: multi-pass with decreasing size Interrogation area: Initial pass at 64x64 pixels with last pass at 16x16 pixels Overlapping: 50% sampling freq. [Hz]: 1000 Number of images: 3000 Fluid medium: air Inner diameter D [mm]: 60.3 Curvature radius [mm]: 95.3 Bulk velocity [m/s]: 8.5 Reynolds number based on bulk velocity: 34000 Dean number: 19000 The data provided have been scaled with the values stated above, i.e. the mean streamwise velocity (W) has been scaled with the bulk velocity and the horizontal (x) and vertical (y) position through the centerline with the radius of the pipe. For the horizontal profile the minus sign denotes the outer pipe wall, while for the vertical profile the minus denotes the lower pipe side. x W_x y W_y -0.997 0.201 1.002 0.354 -0.978 0.511 0.984 0.659 -0.960 0.846 0.965 0.892 -0.941 1.080 0.946 0.992 -0.922 1.153 0.928 1.024 -0.904 1.166 0.909 1.039 -0.885 1.170 0.890 1.048 -0.866 1.176 0.871 1.055 -0.847 1.181 0.853 1.060 -0.829 1.182 0.834 1.062 -0.810 1.185 0.815 1.063 -0.791 1.190 0.797 1.065 -0.773 1.189 0.778 1.065 -0.754 1.182 0.759 1.065 -0.735 1.174 0.741 1.064 -0.717 1.174 0.722 1.063 -0.698 1.179 0.703 1.061 -0.679 1.181 0.684 1.059 -0.660 1.180 0.666 1.056 -0.642 1.179 0.647 1.052 -0.623 1.175 0.628 1.049 -0.604 1.168 0.610 1.045 -0.586 1.158 0.591 1.040 -0.567 1.151 0.572 1.035 -0.548 1.150 0.554 1.029 -0.530 1.147 0.535 1.023 -0.511 1.141 0.516 1.015 -0.492 1.135 0.497 1.007 -0.473 1.132 0.479 0.998 -0.455 1.129 0.460 0.988 -0.436 1.122 0.441 0.976 -0.417 1.115 0.423 0.962 -0.399 1.109 0.404 0.947 -0.380 1.101 0.385 0.930 -0.361 1.093 0.366 0.914 -0.343 1.085 0.348 0.898 -0.324 1.077 0.329 0.881 -0.305 1.069 0.310 0.865 -0.286 1.059 0.292 0.848 -0.268 1.047 0.273 0.833 -0.249 1.033 0.254 0.817 -0.230 1.018 0.236 0.801 -0.212 1.000 0.217 0.787 -0.193 0.980 0.198 0.774 -0.174 0.959 0.179 0.762 -0.156 0.935 0.161 0.751 -0.137 0.909 0.142 0.742 -0.118 0.882 0.123 0.734 -0.099 0.854 0.105 0.727 -0.081 0.826 0.086 0.721 -0.062 0.797 0.067 0.718 -0.043 0.769 0.049 0.716 -0.025 0.741 0.030 0.715 -0.006 0.714 0.011 0.714 0.013 0.689 -0.008 0.714 0.032 0.666 -0.026 0.715 0.050 0.645 -0.045 0.717 0.069 0.626 -0.064 0.721 0.088 0.610 -0.082 0.726 0.106 0.598 -0.101 0.733 0.125 0.588 -0.120 0.741 0.144 0.581 -0.138 0.751 0.162 0.577 -0.157 0.761 0.181 0.574 -0.176 0.773 0.200 0.572 -0.195 0.787 0.219 0.572 -0.213 0.801 0.237 0.572 -0.232 0.816 0.256 0.574 -0.251 0.832 0.275 0.576 -0.269 0.848 0.293 0.578 -0.288 0.866 0.312 0.579 -0.307 0.883 0.331 0.580 -0.325 0.901 0.349 0.582 -0.344 0.918 0.368 0.583 -0.363 0.934 0.387 0.586 -0.382 0.949 0.406 0.590 -0.400 0.963 0.424 0.594 -0.419 0.976 0.443 0.596 -0.438 0.989 0.462 0.599 -0.456 1.001 0.480 0.602 -0.475 1.011 0.499 0.605 -0.494 1.021 0.518 0.608 -0.513 1.029 0.536 0.610 -0.531 1.036 0.555 0.612 -0.550 1.042 0.574 0.616 -0.569 1.048 0.593 0.619 -0.587 1.054 0.611 0.622 -0.606 1.059 0.630 0.624 -0.625 1.064 0.649 0.628 -0.643 1.068 0.667 0.632 -0.662 1.072 0.686 0.636 -0.681 1.075 0.705 0.638 -0.700 1.077 0.723 0.636 -0.718 1.078 0.742 0.630 -0.737 1.079 0.761 0.619 -0.756 1.080 0.780 0.610 -0.774 1.079 0.798 0.605 -0.793 1.077 0.817 0.597 -0.812 1.075 0.836 0.580 -0.830 1.073 0.854 0.553 -0.849 1.070 0.873 0.527 -0.868 1.065 0.892 0.482 -0.887 1.059 0.911 0.374 -0.905 1.051 0.929 0.262 -0.924 1.039 0.948 0.185 -0.943 1.008 0.967 0.157 -0.961 0.893 0.985 0.121 -0.980 0.642 1.004 0.063 -0.999 0.327