Author, as appears in the article.: Dubert, D.; Marin-Genesca, M.; Simon, M. J.; Ezquerro, J. M.; Massons, J.; Gavalda, Jna.; Ruiz, X.; Shevtsova, V.;

Department: Enginyeria Mecànica Química Física i Inorgànica

URV's Author/s: Dubert, Diana Cristina / Gavaldà Martínez, Josefa / Marín Genescà, Marc / Masons Bosch, Jaime / Ruiz Martí, José Javier / Simón Olmos, María José

Keywords: Thermodiffusion Thermal-diffusion Soret Numerical simulation of dcmix experiment Micro vibration Liquid-mixtures Iss vibrational environment G-jitter Experiment onboard Dcmix experiment Binary 2 space-vehicles

Abstract: This work presents the preliminary characterization of the vibrational environment of the DCMIX4 thermodiffusion experiment conducted onboard the ISS from December 2018 to March 2019. Given the long duration of each one of the 58 runs of the campaign and to ensure a correct interpretation of the results, an accurate analysis of acceleration levels all along the experiment is advisable. Digital signals coming from the nearest sensor, es09006, located in the Microgravity Science Glovebox (Destiny module) were downloaded from the PIMS NASA website. The techniques used to identify the main disturbances during the experiments were defined both in time and frequency domains. It is expected that the results obtained can help the experimentalist to have an overview of the possible sources of disturbances that may affect their experiments. To visualize the possible impact of the accelerometric environment on the experiment a numerical simulation has been performed. Four signals have been chosen, one considering the ideal case g = 0, one coming from the OSS raw sensor (outside the Microgravity Science Glovebox) and the other two, coming from the es09006 sensor that needed to be mathematical manipulated for considering only the low frequency range. Independent of the location of the sensor, numerical simulations do not detect, in any case, appreciable flow disturbances if quiescent periods are considered. Therefore, in case the reference sensor is not available one can use other sensors placed in the same module.

Thematic Areas: Thermodynamics Physics and astronomy (miscellaneous) Physics and astronomy (all) Modeling and simulation Mechanics General physics and astronomy General engineering Engineering, multidisciplinary Engineering, aerospace Engineering (miscellaneous) Engineering (all) Engineering Engenharias iii Engenharias ii Biotecnología Applied mathematics

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 0938-0108

Author's mail: dianacristina.dubert@urv.cat marc.marin@urv.cat mariajose.simon@urv.cat josepxavier.ruiz@urv.cat fina.gavalda@urv.cat jaume.masons@urv.cat

Author identifier: 0000-0002-7308-5872 0000-0002-7204-4526 0000-0002-4885-5935 0000-0003-4020-4457 0000-0001-7881-4192 0000-0003-4325-6084

Last page: 628

Record's date: 2023-02-23

Journal volume: 32

Papper version: info:eu-repo/semantics/acceptedVersion

Link to the original source: https://link.springer.com/article/10.1007%2Fs12217-020-09797-w

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Microgravity Science And Technology. 32 (4): 615-628

APA: Dubert, D.; Marin-Genesca, M.; Simon, M. J.; Ezquerro, J. M.; Massons, J.; Gavalda, Jna.; Ruiz, X.; Shevtsova, V.; (2020). On the Monitoring of the Vibratory Environment of DCMIX4 Campaign. Preliminary Results. Microgravity Science And Technology, 32(4), 615-628. DOI: 10.1007/s12217-020-09797-w

Article's DOI: 10.1007/s12217-020-09797-w

Entity: Universitat Rovira i Virgili

Journal publication year: 2020

First page: 615

Publication Type: Journal Publications