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The National Renewable Energy Laboratory in the US specializes in the research and development of renewable energy, energy efficiency, energy systems integration, and sustainable transportation.

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National Renewable Energy Laboratory (NREL)

Test data of one cylinder mass ratio 1.007 
The file names are as follows:
The first 8 digits are the date YYYYMMDD
The second 6 digits are the time HHMMSS
The next number is the spring constant in N/m.  e.g. k400 = 400 n/m
The next digits are the damping ratio
The final digits are the flow speed.  Flow speed is expressed in motor frequency.  Use FlowSpeedConverter.txt to convert flow speed to m/s.

One Cylinder - Mass Ratio 1.007.zip

Test data of one cylinder mass ratio 1.343
The file names are as follows:
The first 8 digits are the date YYYYMMDD
The second 6 digits are the time HHMMSS
The next number is the spring constant in N/m.  e.g. k400 = 400 n/m
The next digits are the damping ratio
The final digits are the flow speed.  Flow speed is expressed in motor frequency.  Use FlowSpeedConverter.txt to convert flow speed to m/s.

One Cylinder - Mass Ratio 1.343.zip

Test data of one cylinder mass ratio 1.685
The file names are as follows:
The first 8 digits are the date YYYYMMDD
The second 6 digits are the time HHMMSS
The next number is the spring constant in N/m.  e.g. k400 = 400 n/m
The next digits are the damping ratio
The final digits are the flow speed.  Flow speed is expressed in motor frequency.  Use FlowSpeedConverter.txt to convert flow speed to m/s.

One Cylinder - Mass Ratio 1.685.zip

Test data of two cylinders, mass ratio 1.343 Spacing 1.57 diameters 
The file names are as follows:
The first 8 digits are the date YYYYMMDD
The second 6 digits are the time HHMMSS
The next number is the spring constant in N/m with the cylinder number expressed after.  e.g. k400_2 = 400 n/m second cylinder
The next digits are the damping ratio
The final digits are the flow speed.  Flow speed is expressed in motor frequency.  Use FlowSpeedConverter.txt to convert flow speed to m/s.
The data from each cyilnder is stored in a separate file.  The timestamp of the cylinders from the same test will match.

Two Cylinders - Spacing 1.57.zip

Test data of two cylinders, mass ratio 1.343 Spacing 2.0 diameters 
The file names are as follows:
The first 8 digits are the date YYYYMMDD
The second 6 digits are the time HHMMSS
The next number is the spring constant in N/m with the cylinder number expressed after.  e.g. k400_2 = 400 n/m second cylinder
The next digits are the damping ratio
The final digits are the flow speed.  Flow speed is expressed in motor frequency.  Use FlowSpeedConverter.txt to convert flow speed to m/s.
The data from each cyilnder is stored in a separate file.  The timestamp of the cylinders from the same test will match.

Two Cylinders - Spacing 2.0.zip

Test data of two cylinders, mass ratio 1.343 Spacing 2.57 diameters 
The file names are as follows:
The first 8 digits are the date YYYYMMDD
The second 6 digits are the time HHMMSS
The next number is the spring constant in N/m with the cylinder number expressed after.  e.g. k400_2 = 400 n/m second cylinder
The next digits are the damping ratio
The final digits are the flow speed.  Flow speed is expressed in motor frequency.  Use FlowSpeedConverter.txt to convert flow speed to m/s.
The data from each cyilnder is stored in a separate file.  The timestamp of the cylinders from the same test will match.

Two Cylinders - Spacing 2.57.zip

Test data of three cylinders, mass ratio 1.343 Spacing 2.01 diameters 
The file names are as follows:
The first 8 digits are the date YYYYMMDD
The second 6 digits are the time HHMMSS
The next number is the spring constant in N/m with the cylinder number expressed after.  e.g. k400_2 = 400 n/m second cylinder
The next digits are the damping ratio
The final digits are the flow speed.  Flow speed is expressed in motor frequency.  Use FlowSpeedConverter.txt to convert flow speed to m/s.
The data from each cyilnder is stored in a separate file.  The timestamp of the cylinders from the same test will match.

Three Cylinders - Spacing 2.01.zip

Three Cylinders - Spacing 2.57.zip

Three Cylinders Spacing 4.01.zip

This contains the table to convert the flow speed in the file names to meters per second.

Flow Speed Converter.txt

Information relating to the submitted data

Read Me.txt

Summary of the one cylinder mass ratio 1.007 tests.
This file is included in the zip as well.

One Cylinder - Mass Ratio 1.007 Summary.xlsx

Summary of the data collected for the one cylinder mass ratio 1.343 tests.
This file is included in the zip as well.

One Cylinder - Mass Ratio 1.343 Summary.xlsx

A summary of the one cylinder mass ratio1.685 tests.
This file is included in the zip as well.

One Cylinder - Mass Ratio 1.685 Summary.xlsx

Summary of the two cylinder data
Mass ratio of 1.343
Spacing of 1.57 diameters
This file is in the zip file as well.

Two Cylinder - Spacing 1.57 Summary.xlsx

Summary of data from two cylinder testing
Spacing 2.0 cylinder diameters
Mass ratio 1.34
This is included in the zip file as well.

Two Cylinder - Spacing 2.0 Summary.xlsx

A summary of the data from the two cylinder tests
Mass Ratio: 1.343
Spacing: 2.57 Diameters
This is in the zip file as well.

Two Cylinder - Spacing 2.57 Summary.xlsx

Three cylinder test summary
Mass ratio: 1.343
Spacing: 2.01 diameters
This is in the zip file as well

Three Cylinder - Spacing 2.01 Summary.xlsx

Summary of three cylinder testing
Mass ratio: 1.343
Spacing: 2.01 diameters
This is in the zip file

Three Cylinder - Spacing 2.57 Summary.xlsx

Summary of the three cylinder data
Mass ratio: 1.343
Spacing: 4.01 diameters
This is in the zip file as well