This readme.txt file was generated on 2019-06-28 ------------------- GENERAL INFORMATION ------------------- 1. Title: Scaled Hydrokinetic Turbine Array installed in a laboratory channel and flood-like sediment transport conditions: topography, flow velocity and array model performance 2. Author Information Principal Investigator Contact Information Name: Michele Guala Institution: University of Minnesota Address: St. Anthony Falls Laboratory, College of Science and Engineering, University of Minnesota, Minneapolis, MN, USA Email:mguala@umn.edu Associate or Co-investigator Contact Information Name: Mirko Musa Institution: University of Minnesota Address: St. Anthony Falls Laboratory, College of Science and Engineering, University of Minnesota, Minneapolis, MN, USA Email:mmusa@umn.edu Associate or Co-investigator Contact Information Name: Craig Hill Institution: University of Minnesota - Duluth Address: Large Lakes Observatory, University of Minnesota Duluth, Minneapolis, MN, USA Email: cshill@d.umn.edu Associate or Co-investigator Contact Information Name: Fotis Sotiropoulos Institution: Stony Brook University Address: Department of Civil Engineering, C College of Engineering and Applied Sciences, Stony Brook University, Stony Brook, NY, USA Email: fotis.sotiropoulos@stonybrook.edu 3. Date of data collection (single date, range, approximate date): 2017-01-11 to 2017-02-17 4. Geographic location of data collection: Saint Anthony Falls Laboratory, CEGE, University of Minnesota 5. Information about funding sources that supported the collection of the data: National Science Foundation CAREER: Geophysical Flow Control (award ID 13513013); Institute on the Environment (IonE), University of Minnesota -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: Attribution-NonCommercial-ShareAlike 3.0 United States https://creativecommons.org/licenses/by-nc-sa/3.0/us/ 2. Links to publications that cite or use the data: Musa, Mirko, et al. "Performance and resilience of hydrokinetic turbine arrays under large migrating fluvial bedforms." Nature Energy 3.10 (2018): 839. https://doi.org/10.1038/s41560-018-0218-9 3. Links to other publicly accessible locations of the data:n/a 4. Links/relationships to ancillary data sets:n/a 5. Was data derived from another source? n If yes, list source(s): 6. Recommended citation for the data: Musa, Mirko; Hill, Craig; Sotiropoulos, Fotis; Guala, Michele. (2019). Scaled Hydrokinetic Turbine Array installed in a laboratory channel and flood-like sediment transport conditions: topography, flow velocity and array model performance.. Retrieved from the Data Repository for the University of Minnesota, http://hdl.handle.net/11299/203913. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: Sediment Flux and Discharge.zip Short description: Water Discharge and Sediment Flux for all the runs. The zip folder contains a Readme file that explains the sub-folder (one for each run) and the data (Matlab files). B. Filename: Topography - Continuous Scan.zip Short description: Topography space-time resolved continuous laser scans for Baseline and Array Experiment runs. The zip folder contains a Readme file that explains the sub-folder (one for each run) and the data (Matlab files). These are the data used to create the Supplementary Videos attached to the referenced publication. C. Filename: Topography - Dry Scan (Final Topo).zip Short description: Final Topography laser scans for each case. The topography is already detrended using baseline averaged bed.The zip folder contains a Readme file that explains the sub-folder (one for each run) and the data (Matlab files). D. Filename: Voltage.zip Short description: Voltage measurements acquired during the Array Experiment from each individual turbine. The averaged values are plotted in Figure 2b of the referenced paper. The zip folder contains a Readme file that explains the data organization (Matlab files). E. Filename: Velocity.zip Short description: Velocity data for the longitudinal wake profile (Figure 2a of the referenced paper) and incoming vertical velocity profile (see Supplementary Information of the referenced paper). The zip folder contains a Readme file that explains the data organization (Matlab files). 2. Relationship between files: 16 directories, 71 files . ├── [ 238] Sediment\ Flux\ and\ Discharge/ │   ├── [ 306] Baseline/ │   │   ├── [155K] Flux.mat* │   │   ├── [1.3M] M_qs.fig* │   │   ├── [ 53K] Q.mat* │   │   ├── [309K] Q_timeseries_whole.fig* │   │   ├── [302K] Weight.mat* │   │   ├── [ 41K] t.mat* │   │   └── [ 224] time_indices.mat* │   ├── [ 272] MHK_Array_Run3/ │   │   ├── [ 65K] Flux.mat* │   │   ├── [ 26K] Q.mat* │   │   ├── [186K] Q_timeseries_whole.fig* │   │   ├── [139K] Weight.mat* │   │   ├── [ 24K] t.mat* │   │   └── [ 224] time_indices.mat* │   ├── [ 272] MHK_Array_Run4/ │   │   ├── [117K] Flux.mat* │   │   ├── [ 44K] Q.mat* │   │   ├── [245K] Q_timeseries_whole.fig* │   │   ├── [239K] Weight.mat* │   │   ├── [ 44K] t.mat* │   │   └── [ 223] time_indices.mat* │   └── [ 13K] ReadMe_data_files.docx* ├── [3.0M] Sediment\ Flux\ and\ Discharge.zip ├── [ 204] Topography\ -\ Continuous\ Scan/ │   ├── [ 170] Array\ Experiment/ │   │   ├── [ 442] Scan_Array/ │   │   │   ├── [1.5M] Array_HIGHpassFiltered.mat* │   │   │   ├── [1.4M] Array_LOWpassFiltered.mat* │   │   │   ├── [459M] Array_TOT_Detrended_BlankTurbs.mat* │   │   │   ├── [466M] Array_TOT_Detrended_InterpolatedTurbsHoles.mat* │   │   │   ├── [1.8K] PassEach_TOT.mat* │   │   │   ├── [ 190] Pass_Frequency_TOT.mat* │   │   │   ├── [1.0K] ReadMe_array_continuous_scans_ARRAYSIDE.txt* │   │   │   ├── [216K] SICK_BoundaryVariables_Array.mat* │   │   │   ├── [245M] SICK_Topo_AllPass_Array_TOT.mat* │   │   │   ├── [247M] SICK_Topo_AllPass_Array_TOT_Clean.mat* │   │   │   └── [239M] SICK_Topo_AllPass_Array_TOT_Clean_BlankTurbs.mat* │   │   └── [ 340] Scan_Unobstructed/ │   │   ├── [1.8K] PassEach_TOT.mat* │   │   ├── [ 190] Pass_Frequency_TOT.mat* │   │   ├── [ 689] ReadMe_array_continuous_scans_USSIDE.txt* │   │   ├── [216K] SICK_BoundaryVariables_US.mat* │   │   ├── [246M] SICK_Topo_AllPass_US_TOT.mat* │   │   ├── [1.5M] Unobstructed_HIGHpassFilter.mat* │   │   ├── [1.5M] Unobstructed_LOWpassFiltered.mat* │   │   └── [467M] Unobstructed_TOT_Detrended.mat* │   ├── [ 306] Baseline/ │   │   ├── [736K] Baseline_MeanBed2Dfit.mat* │   │   ├── [ 195] MBFitParameters.mat* │   │   ├── [2.0K] PassEach.mat* │   │   ├── [ 187] Pass_Frequency.mat* │   │   ├── [ 509] ReadMe_baseline_continuous_scans.txt* │   │   ├── [109K] SICK_BoundaryVariables.mat* │   │   └── [199M] SICK_Topo_AllPass.mat* │   └── [ 13K] ReadMe_topography_continuous_laser_scan.docx* ├── [2.5G] Topography\ -\ Continuous\ Scan.zip ├── [ 204] Topography\ -\ Dry\ Scan\ (Final\ Topo)/ │   ├── [ 204] Array\ Experiment_FinalTopo/ │   │   ├── [ 69] Note.txt* │   │   ├── [ 88M] SICK_Variables.mat* │   │   ├── [104M] TopoDetrended.mat* │   │   └── [104M] Topo_detrended_Clean.mat* │   ├── [ 136] Baseline_FinalTopo/ │   │   ├── [ 88M] SICK_Variables.mat* │   │   └── [104M] TopoDetrended.mat* │   └── [ 13K] ReadMe_final_topography_laser_scan.docx* ├── [470M] Topography\ -\ Dry\ Scan\ (Final\ Topo).zip ├── [ 204] Velocity/ │   ├── [ 306] Longitudinal\ Repeated\ Profiles/ │   │   ├── [178K] Chunk_1.mat* │   │   ├── [ 83K] Chunk_2.mat* │   │   ├── [ 83K] Chunk_3.mat* │   │   ├── [ 83K] Chunk_4.mat* │   │   ├── [122K] Chunk_5.mat* │   │   ├── [ 627] Readme.txt* │   │   └── [ 179] U_incoming.mat* │   ├── [ 13K] ReadMe_velocity_data.docx* │   └── [ 136] Vertical\ Profile/ │   ├── [ 69K] ProcessedVelocity_Profile_MovingADV.mat* │   └── [1.9K] Z.mat* ├── [632K] Velocity.zip ├── [ 136] Voltage/ │   ├── [ 13K] ReadMe_voltage_data.docx* │   └── [149M] Voltage_All.mat* └── [115M] Voltage.zip -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: 2. Methods for processing the data: 3. Instrument- or software-specific information needed to interpret the data: Use and analysis of output requires MATLAB. 4. Standards and calibration information, if appropriate: N/A. 5. Environmental/experimental conditions: 6. Describe any quality-assurance procedures performed on the data: 7. People involved with sample collection, processing, analysis and/or submission: -------------------------------------------------- DATA-SPECIFIC INFORMATION FOR: Sediment Flux and Discharge -------------------------------------------------- The folders represents different runs: - Baseline: this is the baseline run (no turbines), almost 10 hours of data and it’s the result of almost two weeks equilibration runs. These data were used for Figure 2 in the Supplementary Information of the referenced paper. - MHK_Array_Run3 and MHK_Array_Run4 are two consecutive runs, split on two different days, with Run 4 starting from the end of Run 3. The Array Experiment (especially for topography data) is the combination of this two runs. All the three folders contain the same .mat files: - Q : water discharge time series (l/s); - Weight : weight time series (kg) measured by the 5 weighing pans that span the entire channel width (see schematic in Supplementary Information); - F : sediment flux time series (kg/min) calculated for the 5 weighing pans; - t : time vector (s); - time_indices : indices between the time series were selected to calculate statistics avoiding the initial and final periods of the measurements. ------------------------------------------------- DATA-SPECIFIC INFORMATION FOR: Topography - Continuous Scan.zip ------------------------------------------------- This folder includes all the repeated laser scans of the topography evolution (space-time resolved). The folder is divided in Baseline and Array Experiment. The former refers to the run without turbines while the other refers to the experiment with the array installed. ------ Baseline ------ Original Data Description: - Sick_Topo_AllPass: matrix x-y-t of all the repeated scans - SICK_BoundaryVariables: all the variables, including space vectors and resolution - PassEach: time step between consecutive scans Post-Processed Data - Pass_Frequency: average time step - MBFitParameters: 1D linear fit on the mean bed from the Continuous SICK, in time and Y thus creating a 1D vector in x. - Baseline_MeanBed2Dfit: plane created the MBFitParameters and used to detrend all the Topography scans. ------ The Array Experiment data are the result of the combination of two consecutive days of run (i.e. two separated runs): Run 3 and Run 4, for a total of more than 12 hours of experiment and scan. Run 4 started from the unaltered end of Run 3 (so it can be considered as continuous). All the variables in each folders are separately described by a specific Readme file inside the folder. NOTE: the files PassEach_TOT and Pass_Frequency_TOT represent the time step between scans (instantaneous time steps vector and averaged value respectively). Since a single scan was characterized by a scan on the Array Side and consecutively on the Unobstructed Side, the time step refers to the overall scanning time of the two. Therefore these two files are in both folders Scan_Array and Scan_Unobstructed but are the same. The Array Experiment is then sub-divided Scan_Array and Scan_Unobstructed: ------ Scan_Array: all the data regarding the Array Side laser scan (see description in the referenced paper); Original Data Description: - Sick_Topo_AllPass: matrix x-y-t of all the repeated scans - SICK_BoundaryVariables: all the variables, including space vectors and resolution - PassEach: time step between consecutive scans Post-Processed Data - Pass_Frequency: average time step - SICK_Topo_AllPass_Array_TOT_Clean: turbines locations interpolated using surrounding values (needed for Fourier decomposition) - SICK_Topo_AllPass_Array_TOT_Clean_BlankTurbs: turbines locations substituted by NaNs. - Array_TOT_Detrended_InterpolatedTurbsHoles: detrended topo using baseline average plane and turbine locations interpolated - Array_TOT_Detrended_BlankTurbs: detrended topo using baseline average plane and turbine locations blanked with NaNs - Array_LOWpassFiltered: mean bed Low Pass filtered (Fourier Filter) - Array_HIGHpassFiltered: mean bed High Pass filtered (Fourier Filter) The filtered data have already been detrended using the Baseline fit (2D matrix created using the 1D interpolation resulting from averaging the baseline SICK scan in time and y) ------ Scan_Unobstructed: all the data regarding the Unobstructed Side laser scan (see description in the referenced paper); Original Data Description: - Sick_Topo_AllPass: matrix x-y-t of all the repeated scans - SICK_BoundaryVariables: all the variables, including space vectors and resolution - PassEach: time step between consecutive scans Post-Processed Data - Pass_Frequency: average time step - Unobstructed_TOT_Detrended: detrended topo using baseline average - Unobstructed_LOWpassFiltered: mean bed Low Pass filtered (Fourier Filter) - Unobstructed_HIGHpassFiltered: mean bed High Pass filtered (Fourier Filter) The filtered data have already been detrended using the Baseline fit (2D matrix created using the 1D interpolation resulting from averaging the baseline SICK scan in time and y) ------ ------------------------------------------------- DATA-SPECIFIC INFORMATION FOR: Topography - Dry Scan (Final Topo).zip ------------------------------------------------- This folder includes all the Final Topography laser scan. At the end of each case the channel was carefully drained and a final topography scan was acquired. The folder is divided in Baseline and Array Experiment. The former refers to the run without turbines while the other refers to the experiment with the array installed. The final topography scanned at the end of the baseline case corresponds to Figure 1a in the referenced paper. The variables are the following: - TopoDetrended : this is the final topography already detrended subtracting the averaged bed evaluated from the Baseline continuous laser scan (see Topography - Continuous Scan.zip, Baseline folder). - SICK_Variables : spatial coordinates (x,y) and resolution (dx,dy) of the scan. This Matlab workspace includes also the non-detrended topography scan (DEM_new). - Topo_detrended_Clean : this matrix is included in the Array Experiment folder only. It coincides with TopoDetrended but the measurements at the turbine locations (bad data) are removed and interpolated using surrounding topography values (for plotting purposes). Note: The "clean" file refers to a scan with turbine locations interpolated ------------------------------------------------- DATA-SPECIFIC INFORMATION FOR: Voltage.zip ------------------------------------------------- This folder includes the voltage measurements (Voltage_all) acquired during the Array Experiment from each individual turbine. The averaged values are plotted in Figure 2b of the referenced paper. Voltage_all is a Matlab structure the voltage time series matrix for each turbine (indicated in the structure handle). The voltage recording was limited to a total duration of 10 minutes due to memory restrictions; the total voltage time series is the combination of all the consecutive 10-min interval recordings. The short time between consecutive recordings was filled with NaNs to have a continuous time series. Each matrix has 3 columns: - Column 1: recording number; - Column 2: voltage signal (volts); - Column 3: time vector (seconds). ------------------------------------------------ DATA-SPECIFIC INFORMATION FOR: Velocity.zip ------------------------------------------------ This folder includes the velocity measurements presented in the referenced paper. The data are organized in two different types of scan: - Longitudinal Repeated Profiles : these are longitudinal velocity profile measured with moving-ADV technique along the central column of the array (Column B – see description in the Supplementary Information of the referenced paper). This data were used to plot Figure 2a. The folder includes a Readme file that explain the Matlab files. The longitudinal profile was repeated 30 times in order to ensure bedforms-averaged measurements. All the "chunk" files contain: 1) matrices of U, V, W in x and t ("*_mean_ck*") - each scan was repeated 30 times. 2) The time average for the three compontents are organized in UVW_ave_ck*, with the consequent rms (refer to UVW_rms_FM_smooth as final rms values) 3) the x coordinate of the data: x_ck* Description - Chunk_1: upstream measurement - Chunk_2: measurements between row 1 and 2 - Chunk_3: measurements between row 2 and 3 - Chunk_4: measurements between row 3 and 4 - Chunk_2: downstream measurements - U_incoming: Average of U measurements of Chunk_1, sufficiently upstream from the array first row. - Vertical Profile : vertical profile measured upstream of the array to characterize the incoming flow. These data were acquired using moving-ADV technique in the vertical direction (see description in the Supplementary Information of the referenced paper). o ProcessedVelocity_Profile_MovingADV.mat contains the post-processed velocity data. Specifically: variable UVW_ave contain average U, V and W in the z-direction and UVW_rms_FM_smooth are the corresponding rms values. o Z.mat is the corresponding vertical coordinates vector. The spatial resolution of the of the moving-ADV data correspond to a moving average post-process procedure that depends on the instrument moving velocity (typically 1 mm/s), the instrument sampling volume and the instrument sampling frequency, as described in the Supplementary Information of the referenced paper.