Please use this identifier to cite or link to this item: https://doi.org/10.15480/336.3946
Title: Partice Image Velocimetry (PIV) Measurements of the Velocity Field Behind the Truncated Cylinder
Language: English
Authors: Shevchuk, Ivan 
Sahab, Ahmed 
Abdel-Maksoud, Moustafa  
Voigt, Jörg 
Müller, Volker 
Data Collector: Sahab, Ahmed 
Keywords: Particle Image Velocimetry
Issue Date: 2-Dec-2021
Technical Info: 
The experiments are conducted in a windtunnel of TUHH.
The diameter d of the cylinder is 0.25m, the height of the cylinder l is 1m. Data for three Reynolds numbers are published 6.4e+04, 1.28e+05, 2.41e+05.
The data are provided for two sections - at the middle and at the top of the cylinder

In order to read the data, following minimum example can be used (python2.7):

import matplotlib import matplotlib.pyplot as plt import numpy as np

xg,yg,ug,vg,wg = np.load(fname,allow_pickle=True)

uinf = 8 # plotting plt.contour(yg/d,xg/d,ug/uinf,linewidths=0.5,colors='k') plt.contourf(yg/d,xg/d,ug/uinf,15,cmap=plt.cm.jet) plt.colorbar() # draw colorbar plt.show() plt.clf()

(fname is the file name, for example "1000.npy") (xg,yg are the 2d coordinates in the measurement section) (ug, vg, wg - velocity components from the PIV measurement) (uinf is the inflow velocity)
Abstract (english): 
Three-dimensional, two-cameras particle image velocimetry snapshots of the velocity field behind the truncated cylinder at two horizontal sections (T,M). Instantaneous snapshots of the velocity field are saved in *.npy format which is a binary format, provided by NumPy Python library.
Naming convention: TC25-8-SP-T - Truncated cylinder 25cm, 8m/s inflow velocity, Stereo PIV (SP), T - top section
URI: http://hdl.handle.net/11420/11130
DOI: 10.15480/336.3946
Institute: Fluiddynamik und Schiffstheorie M-8 
Document Type: Dataset
Funded by: DOD | USN | ONR | Office of Naval Research Global (ONRG)
More Funding information: NICOP Grand Number: N62909-18-1-2080
License: CC0 1.0 (Public Domain Dedication) CC0 1.0 (Public Domain Dedication)
Appears in Collections:Research Data TUHH

Files in This Item:
File Description SizeFormat
TC25-4-SP-M.zip2,2 GBZIPView/Open
TC25-4-SP-T.zip1,75 GBZIPView/Open
TC25-8-SP-M.zip441,76 MBZIPView/Open
TC25-8-SP-T.zipTruncated cylinder 25cm, 8m/s inflow velocity, Stereo PIV (SP), T - top section449,77 MBZIPView/Open
TC25-15-SP-M.zip426,89 MBZIPView/Open
TC25-15-SP-T.zip400,15 MBZIPView/Open
README.txtReadMe676 BTextView/Open
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This item is licensed under a Creative Commons License Creative Commons