These experiments provide a detailed record of the oscillation of flexible rubber tubes as air flows through them. The tubes are mounted in an experimental rig illustrated below, inflow (with flow meter) || || -\/--- ------ | | p1 p2 | → suction | | ↓ ↓ | | | pu |____________↓________↓____________| pd | | | ------------------ -------- ------------------ ↑ ↑ ↑ upstream flexible downstream settling tube settling chamber chamber 2 high speed cameras are focussed on the flexible tube The suction is gradually increased until the flexible tube just starts to oscillate, at which point high speed video is recorded of the tube from 2 cameras, and pressure recordings are made at the 4 labelled locations (pu,p1,p2,pd). The pressure recordings and cameras are all triggered at the same time. The average flow rate is also recorded from a rotameter at the inflow. Pressures are measured relative to the external atmospheric pressure. The flexible tubes are held in place under a prescribed axial strain. For each experimental run we have recorded the following data, Description Format Unit Label --------------------------------------------------------------------- unstrained tube diameter double mm d unstrained tube length double mm l0 unstrained tube wall thickness double mm h tube length in experiment double mm l average flowrate during oscillation double lpm Q high speed video frame rate double fps fr sampling rate for pressure series double 1/s fs p1 pressure time series vector vector double mbar p1 p2 pressure time series vector vector double mbar p2 pu pressure time series vector vector double mbar pu pd pressure time series vector vector double mbar pd video 1 of oscillation avi file video 2 of oscillation avi file image of unstrained tube (camera 1) tif file image of unstrained tube (camera 2) tif file calibration images for camera 1 tif files calibration images for camera 2 tif files Numerical data is stored in a csv file called "runX_numericdata.csv" containing 11 rows. The first column of the csv file contains the labels of the data, and the remaining columns contain the data itself. The order of the rows is as shown in the above table. The video and image files are named "runX_video1.avi", "runX_video2.avi", "runX_unstrainedtube_camera1.tiff", "runX_unstrainedtube_camera2.tiff", "runX_calimageY_camera1.tiff", and "runX_calimageY_camera2.tiff", where X is the run number, and Y is the calibration image number. These imaging files are compressed into a zip file called "runX_videodata.zip". Hence for each run there are 2 files: runX_numericdata.csv runX_videodata.zip which contain all of the experimental data. In addition there is a summary csv file called "run_summary.csv" which contains 6 columns with the following data, run_number, d, l0, h, l, Q This reference file replicates the data already stored in the individual run files, but in a more accessible format. The data for these experiments was collected in April 2016 in the Acoustics Laboratory in Cambridge University Engineering Department (http://acoustics.eng.cam.ac.uk).