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29 results for “ENODISE”
H2020 ENODISE: UTWE Configuration A Experimental Databases with Mitigation
<p>This database contains the datasets for the aeroacoustic experiments conducted at the University of Twente on the H2020 ENODISE project, Task 6.1 (experimental databases with mitigation), Configuration A1 - Wall mounted.</p> <p><br>Configuration A1 consists of a propeller ingesting a zero-pressure-gradient boundary layer. Far-field acoustics are measured using two microphone arrays, to assess directivity and sound pressure levels. Different treatments are used at the flat plate underneath the propeller to attenuate the noise reflected by the plate. Two main strategies are analyzed: tuned quarter-wavelength resonator arrays - to reduce tonal noise - and a broadband noise absorber (metal foam). The quarter-wavelength resonator arrays are tested in different geometrical distributions. </p> <p><br>That forms part of deliverables D6.4, D6.5, and D6.6 - see reports for further information regarding measurement techniques. Included are descriptive READMEs. The data is in the HDF5 format and comprises mean, spectral, and other processed data types in engineering units. CAD files are also added, to properly describe the setup and its components.</p>
H2020 ENODISE: ONERA Numerical Aeroacoustic Database Configuration A2-Ducted
<p>This database contains the numerical results obtained by ONERA on the configuration A2-ducted of the H2020 ENODISE project. In this configuration, a ducted propeller is placed above an S-plate to ingest an adverse pressure gradient boundary layer in a partially buried configuration. The present results can be compared to the measurements carried out by the University of Bristol.</p> <p>All following parameters are kept constant in the present simulations:</p> <ul> <li>Free-stream velocity <em>u_inf</em> = 32 m/s,</li> <li>Propeller tip clearance <em>d/D</em> = 0.002,</li> <li>Propeller position inside the duct <em>x/D</em> = -0.0627.</li> </ul> <p>Five simulations have been realized by varying the installation (with or without the S-plate) and the propeller rotation speed:</p> <ul> <li>Isolated propeller (without the S-plate), <em>N</em> = 6000 rpm, 8000 rpm, 11000 rpm,</li> <li>Installed propeller (with the S-plate), <em>N</em> = 6000 rpm, 8000 rpm.</li> </ul> <p>The predictions were obtained using the ProLB solver which is based on the Lattice Boltzmann method (<a href="http://www.prolb-cfd.com/">http://www.prolb-cfd.com/</a>). Aerodynamic and acoustic results are provided for each simulation. One-dimensional results are saved into ASCII column files (<em>.dat</em> extension) while geometry and raw flow extractions are saved into HDF5 CGNS files (<em>.cgns</em> extension). <em>README.txt</em> files are included for detailed description of the data.</p> <p> </p>
H2020 ENODISE: SISW Numerical Aeroacoustic Database Configuration B2
<p>This database contains the aeroacoustic numerical results generated by Siemens Industry Software (SISW) for the B2 configuration investigated in the framework of the European project ENODISE. In this configuration, a six-blade propeller mounted on a support is studied for two operating points with and without flow. The operating points correspond to conditions 65 and 66 of the experimental campaign carried out at Ecole Centrale of Lyon (see H2020 Enodise: Experimental dataset configuration B2 ECL, https://zenodo.org/record/7925336).</p> <p>The two investigated operating points are:</p> <ul> <li>Uinf = 0 studied numerically using detached-eddy simulation combined with finite-element method for acoustics</li> <li>Uinf = 22 m/s studied numerically using large-eddy simulation combined with finite-element method for acoustics</li> </ul> <p>The SISW aeroacoustic results have been obtained using CFD software Simcenter STAR-CCM+ coupled with acoustic software Simcenter 3D Acoustics. The hydrodynamic and acoustic interactions between the propeller and its support are taken into account in the numerical simulations.</p> <p>More information about the numerical setup and results can be found in the documentation included in the database.</p> <p>The data are saved in dat files.</p>
H2020 ENODISE: ONERA Numerical Aeroacoustic Database of Configuration C
<p>This database contains the acoustic prediction results realized by ONERA of the configuration C investigated in the framework of the European project ENODISE. In this configuration, contra-rotating propellers are investigated in static condition with and without shroud. The results presented here can be compared to the measurements carried out by von Karman Institute for Fluid Dynamics in anechoic facility ALCOVES (https://zenodo.org/record/7966211).</p> <p>The investigated operating point as calculated in the prediction is:</p> <ul> <li>Shrouded, RPM=6000, d=3cm.</li> <li>Unshrouded, RPM=6000, d=3cm.</li> </ul> <p>Predictions were obtained using the ProLB code based on a Lattice Botlzmann Method.</p> <p>Description of the database is proposed in the document <em>Database_ENODISE_ONERA_ConfigurationC.pdf.</em></p>
H2020 Enodise: TUD/NLR Experimental database configuration B3
<p>This dataset considers experimental aerodynamic and aeroacoustic data for configuration B3 as defined in the H2020 Enodise project (https://www.vki.ac.be/index.php/about-enodise):</p> <p>Configuration B3 has been split into two subconfigurations (B3-VTOL and B3-FLAP). The available data for two subconfigurations are given below.</p> <p><strong>B3-VTOL (side-by-side rotor setup):</strong></p> <p>- Time-resolved 2D2C Velocity fields</p> <p>- 4D-PTV tracks </p> <p><strong>B3-FLAP (over-the-wing distributed propulsion):</strong></p> <p>- Propeller thrust and torque (for isolated propeller, over-the-wing propeller, over-the-wing distributed propellers)</p> <p>- Acoustic microphone data (for isolated propeller, over-the-wing propeller, over-the-wing distributed propellers)</p> <p>- Wing static pressures (for over-the-wing propeller, over-the-wing distributed propellers)</p> <p>- Time-averaged 2D3C Velocity fields (for over-the-wing propeller)</p> <p>- Time-averaged 2D2C Velocity fields (for over-the-wing distributed propellers)</p> <p> </p>
H2020 ENODISE: UTWE Configuration A Experimental Databases
<p>This database contains the datasets for the aeroacoustic experiments conducted at the University of Twente on the H2020 ENODISE project, Task 3.1, Configuration A1 - Wall mounted.</p> <p>Configuration A1 consists of a propeller ingesting a zero-pressure-gradient boundary layer. Far-field acoustics are measured using two microphone arrays, to assess directivity and sound pressure levels. Near-field measurements consist of surface static pressure and pressure fluctuations. Propeller force and torque is measured using a load cell. Flow-field measurements are obtained through hotwire anemometry.</p> <p>This forms part of Deliverable D3.3, see report for further information regarding measurement techniques. Included are descriptive READMEs. The data is in the HDF5 format and comprises mean, spectral, and other processed data types in engineering units.</p>
H2020 ENODISE: NLR Numerical aeroacoustic database configuration B3-flap
<p>This dataset considers numerical aerodynamic and aeroacoustic data for an over-the-wing mounted propeller, denoted configuration B3-flap as defined in the H2020 ENODISE project (https://www.vki.ac.be/index.php/about-enodise).</p> <p>The dataset consists of</p> <p>- Aerodynamic data: propeller thrust and torque</p> <p>- Acoustic data: pressure Fourier modes at 1, 2, and 3 BPF</p> <p>both for the isolated propeller and the over-the-wing mounted propeller.</p> <p>An overview of the performed numerical simulation and a description of the dataset is given in the included PDF file (ENODISE_NLR_B3_flap_URANS.pdf). This file also includes the aerodynamic data.</p> <p>Experiments have also been performed by NLR for this configuration. See https://zenodo.org/record/8283630 for details and the experimental dataset.</p>
H2020 ENODISE: DLR Analytical Aeroacoustic Database BLI Configuration A1 and A2
<p>This database contains the acoustic prediction results of DLR for a single operating point of the A1 and A2 configurations investigated in the framework of the European project ENODISE. In these configurations, a single two-bladed propeller is immersed in a boundary layer. The present results can be compared to the measurements carried out by the University of Bristol and the University of Twente for different boundary layer characteristics. The experimental results are saved elsewhere on the ZENODO repository.</p> <p>The investigated operating point as calculated in the prediction is:</p> <ul> <li>Uinf = 33 m/s, 6500 rpm, advance ratio J=1.</li> </ul> <p>The experimental measurements were conducted at a slightly lower freestream velocity.</p> <p>The DLR prediction results were obtained using the analytical approach implemented in the DLR in-house program PropNoise coupled to the blade element momentum theory. The calculations were informed by the hot-wire measurements carried out in the boundary-layer as the propeller was removed.</p> <p>Refer to the two references cited below to obtain more information about the theory that was applied to obtain the results: </p> <ol> <li> S. Guérin, T. Lade, L. Castelucci, I. Zaman, Tonal noise emission by a low-Mach low-Reynolds number propeller ingesting a boundary layer, 29th International Congress on Sound and Vibration, 10-13 July 2023, Prague (CZ).</li> <li> S. Guérin, T. Lade, L. Castelucci, I. Zaman, Broadban noise emission by a low-Mach low-Reynolds number propeller ingesting a boundary layer, Inter-Noise 2023, 20-23 August 2023, Chiba (Great Tokyo), Japan.</li> </ol> <p>The results for tonal and broadband noise are saved separately. The DLR results are saved into an h5 file, which can be read with e.g. python.</p> <p>Further details can be found in the file <em>DLR_documentation_A1_A2.pptx</em></p>
H2020 ENODISE: DLR Analytical Aeroacoustic Database Configuration B1
<p>This database contains the acoustic prediction results of DLR for a single operating point of the B1 configuration investigated in the framework of the European project ENODISE. In this configuration, three identical propellers with 6 blades are mounted at leading-edge of a wing (puller configuration). The results presented here can be compared to the measurements carried out by the Technical University of Delft, when these are available. The experimental results should be also saved on the ZENODO repository (use the key word ENODISE).</p> <p>The investigated operating point as calculated in the prediction is:</p> <ul> <li>Uinf = 30 m/s, advance ratio J=0.8.</li> </ul> <p>The DLR prediction results were obtained using the analytical approach implemented in the DLR in-house program PropNoise coupled to the blade element momentum theory.</p> <p>The interaction with the wing is accounted for in a simplistic way as explained in the detailed documentation <em>B_documentation.pptx.</em></p> <p>Only, the results for tonal noise are available in this database. Three cases can be investigated separately: a single isolated propeller, 3 distributed propellers, three distributed propellers interacting with the wing.</p> <p> </p> <p>The DLR results are saved in h5 files, which can be read with e.g. Python.</p>
H2020 ENODISE: SISW Numerical Database Configuration C
<p><span>This database contains the acoustic numerical results generated by Siemens Industry Software (SISW) for the propeller configuration C investigated in the framework of the European project ENODISE. </span></p> <p><span><span>This configuration consists of</span> two co-rotating co-axial Mejzlik propellers operating at 6000 rpm without flight stream. The effect of varying the clocking angle between the two propellers is studied as a possible noise mitigation strategy. </span></p> <p><span>The numerical simulations reproduce the conditions of the experimental campaign carried out at von Karman Institute for Fluid Dynamics, Belgium (see H2020 Enodise: Experimental dataset of configuration C with mitigation VKI, <a href="../records/10880751">https://zenodo.org/records/10880751</a>).</span></p>
H2020 Enodise: Experimental dataset configuration B2 ECL
<p>This dataset considers experimental aerodynamic and acoustic data for configuration B2 as defined in the H2020 ENODISE project (https://www.vki.ac.be/index.php/about-enodise). Wing static pressure, propellers' loads, and far-field sound measurements were performed in an open-jet anechoic facility with a Distributed Electric Propulsion (DEP) configuration model which includes a wing and two side-by-side propellers.</p>
H2020 ENODISE Analytical Data Set configuration C ECL
<p>Preliminary wake-interaction noise and steady-loading noise estimates for a contrarotating propeller system, using analytical modeling.</p>
H2020 ENODISE: VKI Numerical Aeroacoustic Database of Configuration B1
<p>This database represents the resultant data from a hybrid methodology consisting of aerodynamic simulations using uRANS and acoustic propagation simulations using FEM. The simulation of both the aerodynamic installation effects and the acoustic installation effects is available. The data from the aerodynamic simulations is given in the<em> .cgns </em>format and are in the <em>Aerodynamic_Results</em> folder. The resulting acoustic directivities from these sources using the FEM-Source Mode method are stored in the <em>Acoustic_Results</em> folder as <em>.csv </em>files. Both folders have a README file available with more details.</p>
H2020 ENODISE: VKI and SISW Numerical Aeroacoustic Database of Configuration C
<p>The hybrid aeroacoustic methodology prediction findings produced by VKI and SISW for configuration C within the scope of the European project ENODISE are contained in this database. In this setup, contra-rotating propellers with and without a shroud are investigated. Simulations of single rotors with and without the shroud are also included. The measurements made at the anechoic facility ALCOVES at VKI (https://zenodo.org/record/7966211) and further simulations made by ONERA (https://zenodo.org/record/8191815) can be compared to the findings provided here . </p> <p>A description of the numerical set up and database file structure are included in the PDF: <em>VKI-SISW_Simulation_Methodology_and_File_Organization_Config_C.pdf</em></p> <p><br> </p>
H2020 ENODISE: TUD Experimental database configuration B1
<p>This dataset contains experimental data for aerodynamics and acoustics of configuration B1, which was defined in the H2020 ENODISE project (<a href="https://www.vki.ac.be/index.php/about-enodise">https://www.vki.ac.be/index.php/about-enodise</a>). The measurements were taken in the Low-Speed, Low-Turbulence Tunnel (LTT) at Delft University of Technology, using a Distributed Electric Propulsion (DEP) configuration model that consists of three propellers installed side-by-side on the leading edge of a wing.</p>
H2020 ENODISE: ONERA Auralizations Configuration B2
<p>A quick evaluation of the SISW numerical data (<a href="https://zenodo.org/record/8176756">https://zenodo.org/record/8176756) </a>and the ECL experimental data (<a href="https://zenodo.org/record/7925336">https://zenodo.org/record/7925336</a>) was done on an auditory level through auralisations. The in-house auralisation tool FLAURA was used. Sound signatures were evaluated at the microphone positions 17 and 22 (at 90° to the propeller plane) for single and double propeller configurations, with and without flow.</p> <p>The database is composed of .wav files, presenting the measured temporal data (ECL) either compared to auralised measured spectral data (ECL) or simulated data (SISW).</p> <p>A description of the data is included in a pdf file.</p>
H2020 ENODISE: VKI Experimental dataset of configuration C for numerical optimization
<p>The database includes acoustic and load measurements performed in the ALCOVES anechoic facility of the von Karman Institute on co-rotating coaxial propellers. This configuration corresponds to Config. C of the ENODISE project. This database has been used for numerical optimization. </p>
H2020 ENODISE: GPUP Configuration A Numerical Databases with Mitigation
<p>This dataset contains the numerical prediction for A2 configuration as defined in the H2020 ENODISE project (<a href="https://www.vki.ac.be/index.php/about-enodise">https://www.vki.ac.be/index.php/about-enodise</a>)</p> <p>The dataset contains numerical simulation results for Band-Limited Overall Sound Pressure Level (BL-OASPL) for a rotor operating at inflow velocities of 15 m/s, 27 m/s, 45 m/s, 60 m/s, and 75 m/s with the rotation rate of 6500 RPM. Three setups are investigated with the rotor located at 1000mm, 800mm, and 480mm. The BL OASPL is obtained at 90-degree observer angle in an overhead array. These simulations are based on the experimental setup by the University of Bristol on the investigation of turbulence-ingestion-rotor noise. </p>
H2020 ENODISE: GPUP Configuration B Numerical Databases with Mitigation
<p>This dataset contains the numerical prediction for A2 configuration as defined in the H2020 ENODISE project (<a href="https://www.vki.ac.be/index.php/about-enodise">https://www.vki.ac.be/index.php/about-enodise</a>)</p> <p>The dataset corresponds to the Band-Limited Overall Sound Pressure Level (BL OASPL) measurements obtained for Configuration B, focusing on the acoustic performance of propellers under different configurations. Two main setups were tested:</p> <ol> <li><strong>Propeller without Serrations</strong>: This configuration represents the baseline case where the propeller operates without any modifications to its trailing edge.</li> <li><strong>Propeller with Serrations</strong>: This configuration represents the case where the propeller operates with serrations at the trailing edge of the propeller.</li> </ol> <h1><strong>Setup </strong></h1> <ol> <li> <p><strong>Rotors</strong>: The setup involves three rotors:</p> <ul> <li><strong>Rotor_C (Central Rotor)</strong></li> <li><strong>Rotor_L (Left Rotor)</strong></li> <li><strong>Rotor_R (Right Rotor)</strong></li> </ul> <p>The Left and Right Rotors (Rotor_L and Rotor_R) are fixed at a position of <strong>x = -0.22m</strong>.</p> </li> <li> <p><strong>Axial Locations and Phase Angles</strong>: The central rotor (Rotor_C) was moved in the axial direction, and three distinct setups were investigated:</p> <ul> <li><strong>Baseline Case (Δx = 0Db)</strong>: Rotor_C located at <strong>x = -0.22m</strong>.</li> <li><strong>Forward Case (Δx = -0.2Db)</strong>: Rotor_C moved forward to <strong>x = -0.26m</strong>.</li> <li><strong>Backward Case (Δx = +0.2Db)</strong>: Rotor_C moved backward to <strong>x = -0.18m</strong>.</li> </ul> <p>For each axial location, four phase angles were tested: <strong>0°, 45°, 90°, 135°</strong>.</p> </li> </ol> <h1>Dataset :</h1> <ol> <li> <p><strong>Total Simulations</strong>:</p> <ul> <li>Each propeller configuration (serrated and non-serrated) was tested under the three axial locations and four phase angles, resulting in a total of <strong>12 simulations</strong> for each setup.</li> <li>This results in <strong>24 simulations</strong> (12 simulations with serrations + 12 simulations without serrations) across all configurations.</li> </ul> </li> <li> <p><strong>Measured Parameters</strong>:</p> <ul> <li><strong>Area-averaged Bandlimited Prms</strong>: The overall sound pressure level averaged over the area, given in both linear scale and converted to decibels (dB).</li> <li><strong>Maximum Bandlimited Prms</strong>: The maximum sound pressure level observed within the band, also provided in both linear scale and dB.</li> </ul> </li> <li><strong>Script</strong> <ul> <li>Python script is provided which converts original dataset to log scale </li> </ul> </li> </ol>
H2020 ENODISE: DLR Configuration B, Analytical
<p>A varitiation of phase shift and tip gap between adjacent propellers of configuration B1 has been carried out and acoustically investigated. For further description please read <em>D5-7_B1.pdf.</em></p>
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