Experimental data of flash boiling liquid nitrogen sprays (Test Case IN-1)

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Rees, Andreas; Oschwald, Michael, 2021, "Experimental data of flash boiling liquid nitrogen sprays (Test Case IN-1)", https://doi.org/10.18419/darus-2076, DaRUS, V1, UNF:6:WzjTONgKlTqgJ42vqQnX5g== [fileUNF]

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Subtitle	Droplet velocity and diameter distributions by means of PDA-measurement
Description	The flash boiling process of superheated liquid nitrogen (LN2) under high-altitude conditions was investigated with the help of a cryogenic temperature adjustment system and injection system at the test bench M3.3 at DLR Lampoldshausen. The test fluid LN2 reaches its superheated condition by varying the injection temperature or by a low-pressure environment in the vacuum chamber of the test bench. This cylindrical chamber with an inner diameter of 300 mm provides four optical accesses to visualize the sprays and their morphology by high-speed shadowgraphy and by laser-based Phase-Doppler diagnostics (PDA). For the present testcase, highly superheated LN2 sprays with constant injection conditions were generated. By means of PDA the local distributions of the mean droplet velocities and diameters within the flash boiling sprays were measured. (2021-07-06)
Subject	Engineering; Physics
Keyword	flash boiling, cryogenics, liquid nitrogen, atomisation, droplet distribution
Related Publication	Rees, A., Araneo, L., Salzmann, H., Lamanna, G., Sender, J., Oschwald, M.: Droplet Velocity and Diameter Distributions in Flash Boiling Liquid Nitrogen Jets by Means of Phase Doppler Diagnostics. Exp. Fluids, 61(182), 2020.doi: 10.1007/s00348-020-03020-7
Data Generation	Experiment
License/Data Use Agreement	CC BY 4.0

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	1 to 8 of 8 Files	Original Format Archival Format (.tab) Request Access
	TC IN-1 Data Set.pdf Adobe PDF - 1.2 MB Published Jul 29, 2021 123 Downloads MD5: 8e2926ff2474739f777d17d069893f1d In this file some analysis examples in terms of diagrams of the measured raw-data are shown.	Preview "TC IN-1 Data Set.pdf" Access File File Access Public Download Options Adobe PDF Download Metadata Data File Citation EndNote XML RIS BibTeX
	TC IN-1 Description Issue.pdf Adobe PDF - 996.3 KB Published Jul 29, 2021 122 Downloads MD5: fed7186cbde6b12c5ad2e322d5089555 In this file theoretical background about flash boiling, a detailed description of the experimental set-up and the injection conditions can be found. Furthermore, the measured parameters, which are provided as raw-data, are explained.	Preview "TC IN-1 Description Issue.pdf" Access File File Access Public Download Options Adobe PDF Download Metadata Data File Citation EndNote XML RIS BibTeX
	TC IN-1 Raw Data (mean values).xlsx MS Excel Spreadsheet - 26.1 KB Published Jul 29, 2021 0 Downloads MD5: 9251b13f9cffe445ca09553940f144bf In this file all mean values of the measured parameters at different x/D and y/D distances to the injector are summarized.	Access File File Access Restricted Request Access Download Metadata Data File Citation EndNote XML RIS BibTeX
	TC IN-1 Raw Data (D10 values).tab csv-data/Tabular Data - 1.7 KB Published Jul 29, 2021 42 Downloads 3 Variables, 91 Observations UNF:6:11rgyBjOq9dSDaCT8fRRIg== In this file arithmetic mean diameters D10 at the measured x/D and y/D distances to the injector are summarized.	Preview "csv-data/TC IN-1 Raw Data (D10 values).tab" Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX
	TC IN-1 Raw Data (Hi&Lo D10 values).tab csv-data/Tabular Data - 2.6 KB Published Jul 29, 2021 40 Downloads 4 Variables, 91 Observations UNF:6:AnEyp6KN50CDfd3O79wpTQ== In this file arithmetic mean diameters D10 of the Hi- and Lo-droplet-populations at the measured x/D and y/D distances to the injector are summarized.	Preview "csv-data/TC IN-1 Raw Data (Hi&Lo D10 values).tab" Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX
	TC IN-1 Raw Data (Hi&Lo U_mean values).tab csv-data/Tabular Data - 2.7 KB Published Jul 29, 2021 40 Downloads 4 Variables, 91 Observations UNF:6:o/FM7wgyNUrfjGsUkjCc9Q== In this file mean vertical velocity U values of the Hi- and Lo-droplet-populations at the measured x/D and y/D distances to the injector are summarized.	Preview "csv-data/TC IN-1 Raw Data (Hi&Lo U_mean values).tab" Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX
	TC IN-1 Raw Data (U_mean values).tab csv-data/Tabular Data - 1.7 KB Published Jul 29, 2021 45 Downloads 3 Variables, 91 Observations UNF:6:2UlVU44YK37C29eM2SEPGA== In this file mean vertical velocity U values at the measured x/D and y/D distances to the injector are summarized.	Preview "csv-data/TC IN-1 Raw Data (U_mean values).tab" Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX
	TC IN-1 Raw Data (V_mean values).tab csv-data/Tabular Data - 1.7 KB Published Jul 29, 2021 45 Downloads 3 Variables, 91 Observations UNF:6:5KHiusCAf5HEQX+1lHxj9w== In this file mean horizontal velocity V values at the measured x/D and y/D distances to the injector are summarized.	Preview "csv-data/TC IN-1 Raw Data (V_mean values).tab" Access File File Access Public Download Options Comma Separated Values (Original File Format) Tab-Delimited RData Download Metadata Variable Metadata Data File Citation EndNote XML RIS BibTeX

Citation Metadata

Persistent Identifier	doi:10.18419/darus-2076
Publication Date	2021-07-29
Title	Experimental data of flash boiling liquid nitrogen sprays (Test Case IN-1)
Subtitle	Droplet velocity and diameter distributions by means of PDA-measurement
Author	Rees, Andreas (DLR Lampoldshausen - Deutsches Zentrum für Luft- und Raumfahrt e.V.) - ORCID: 0000-0002-4114-636X Oschwald, Michael (DLR Lampoldshausen - Deutsches Zentrum für Luft- und Raumfahrt e.V.) - ORCID: 0000-0002-9579-9825
Point of Contact	Use email button above to contact. Rees, Andreas (DLR - Deutsches Zentrum für Luft- und Raumfahrt e.V.)
Description	The flash boiling process of superheated liquid nitrogen (LN2) under high-altitude conditions was investigated with the help of a cryogenic temperature adjustment system and injection system at the test bench M3.3 at DLR Lampoldshausen. The test fluid LN2 reaches its superheated condition by varying the injection temperature or by a low-pressure environment in the vacuum chamber of the test bench. This cylindrical chamber with an inner diameter of 300 mm provides four optical accesses to visualize the sprays and their morphology by high-speed shadowgraphy and by laser-based Phase-Doppler diagnostics (PDA). For the present testcase, highly superheated LN2 sprays with constant injection conditions were generated. By means of PDA the local distributions of the mean droplet velocities and diameters within the flash boiling sprays were measured. (2021-07-06)
Subject	Engineering; Physics
Keyword	flash boiling cryogenics https://www.wikidata.org/wiki/Q192116 (Wikidata) liquid nitrogen atomisation http://purl.obolibrary.org/obo/CHMO_0001466 (CHMO) droplet distribution
Related Publication	Rees, A., Araneo, L., Salzmann, H., Lamanna, G., Sender, J., Oschwald, M.: Droplet Velocity and Diameter Distributions in Flash Boiling Liquid Nitrogen Jets by Means of Phase Doppler Diagnostics. Exp. Fluids, 61(182), 2020. doi 10.1007/s00348-020-03020-7 https://doi.org/10.1007/s00348-020-03020-7 Rees, A., Salzmann, H., Sender, J., Oschwald, M.: About the Morphology of Flash Boiling Liquid Nitrogen Sprays. At. Sprays, 30(10), 713-740, 2020. doi 10.1615/AtomizSpr.2020035265 https://doi.org/10.1615/AtomizSpr.2020035265 Rees, A.: Experimentelle Untersuchung der Flashverdampfung infolge der Einspritzung von kryogenem Stickstoff unter Höhenbedingungen. Dissertation, RWTH Aachen University, published as Forschungsbericht DLR-FB-2020-37, October 2020. issn 1434-8454 https://elib.dlr.de/137873/ Rees, A., Salzmann, H., Sender, J., Oschwald, M., July 1.-4. 2019, Investigation of Flashing LN2-Jets in Terms of Spray Morphology, Droplet Size and Velocity Distributions, 8th EUCASS Conference. doi 10.13009/EUCASS2019-418 https://doi.org/10.13009/EUCASS2019-418 Rees, A., Araneo, L., Salzmann, H., Kurudzija, E., Suslov, D., Lamanna, G., Sender, J., Oschwald, M., Sept. 2.-4. 2019, Investigation of Velocity and Droplet Size Distributions of Flash Boiling LN2-Jets With Phase Doppler Anemometry, 29th ILASS Europe Conference. url https://ilass19.sciencesconf.org/286174 Gärtner, J.W., Kronenburg, A., Rees, A., Sender, J., Oschwald, M., Lamanna, G.: Numerical and experimental analysis of flashing cryogenic nitrogen. Int. J. Multiph. Flow 130, 1-13, 2020. doi 10.1016/j.ijmultiphaseflow.2020.103360 https://doi.org/10.1016/j.ijmultiphaseflow.2020.103360
Funding Information	DFG: 84292822
Project	SFB-TRR 75
Depositor	Rees, Andreas
Deposit Date	2021-07-06

Process Metadata

Software	BSA Flow Software 6.50 Version: 6.50 USB-Dongle
Instruments	DPSS-Laser Dual-PDA System by Dantec Dynamics (laser-optical phase Doppler measurement system) , Version: 2D P800 Processor , Software: BSA Flow Software 6.50 , Location: DLR Lampoldshausen M3.3 / ITLR Universität Stuttgart

Engineering Metadata

Data Generation	Experiment
Measured Variables	mean vertical velocity (U_mean) [m/s] ; Error: 6.1 (confidence interval (+-)) : -3.8 : 67 mean horizontal velocity (V_mean) [m/s] ; Error: 8.0 (confidence interval (+-)) : -36.7 : 77.4 mean vertical velocity of Hi-population (U_mean_Hi) [m/s] ; Error: 6.1 (confidence interval (+-)) : 11.1 : 67.8 mean vertical velocity of Lo-population (U_mean_Lo) [m/s] ; Error: 6.1 (confidence interval (+-)) : -12.9 : 4.6 arithmetic mean droplet diameter (D_10) [µm] ; Error: 26 (confidence interval (+- percentage)) : 6.5 : 18.5 arithmetic mean droplet diameter of Hi-population (D_10_Hi) [µm] ; Error: 26 (confidence interval (+- percentage)) : 6.5 : 18.7 arithmetic mean droplet diameter of Lo-population (D_10_Lo) [µm] ; Error: 26 (confidence interval (+- percentage)) : 5.8 : 19.3
Controlled Variables	dimensionless horizontal position (x/D) [-] : -15 : 50 dimensionless vertical position (y/D) [-] : 5 : 70

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