Articles producció científica> Química Física i Inorgànica

Numerical analysis of n-octadecane melting process in a rectangular cell under reboosting maneuver conditions

  • Dades identificatives

    Identificador: imarina:9366511
    Autors:
    Dubert, DSimón, MJMassons, JRuiz, XGavaldà, J
    Resum:
    The improvement of heat management based on Phase Change Materials (PCMs) is of increasing importance in space environments. In this context, a future ESA project called Effect of Marangoni Convection on heat transfer in Phase Change Materials (MarPCM) will evaluate the degree of improvement in heat transport using thermocapillarity as convective activator of the liquid phase generated during the melting. Since this type of project needs to be performed onboard International Space Station, ISS, it is of outmost importance to know if the accelerometric environment of the Station could affect the experiment results.To do so, various 2D simulations of the solid-liquid phase change were carried out using n-octadecane as PCM material, by considering a pre-selected acceleration signal coming from a real ISS reboosting maneuver (June 24, 2021). Different gravity scenarios have been considered by changing both the intensity and the orientation of the reboosting maneuver, parallel (x direction) and perpendicular (y direction) to the thermal gradients. The acceleration levels were enhanced up to 1000 times the intensity achieved during the real reboosting in order to predict the safety margins of the ISS experiment.The results showed alterations of the liquid-solid interface, during the melting process in the high g-level scenarios considered. In these cases, the oscillatory flow pattern became more complex detecting sudden changes in the main frequency which were maintained approximately 1000 s after the reboosting ended. Nevertheless, applying real boosting maneuver no significant influence in the melting process was detected.
  • Altres:

    Autor segons l'article: Dubert, D; Simón, MJ; Massons, J; Ruiz, X; Gavaldà, J
    Departament: Química Física i Inorgànica Enginyeria Mecànica
    Autor/s de la URV: Dubert, Diana Cristina / Gavaldà Martínez, Josefa / Masons Bosch, Jaime / Ruiz Plazas, Xavier / Simón Olmos, María José
    Paraules clau: Thermocapillary convection (marangoni effect) Phase-change materials Phase change materials Openfoam software Iss vibrational environment Environment Energy-storage Accelerations
    Resum: The improvement of heat management based on Phase Change Materials (PCMs) is of increasing importance in space environments. In this context, a future ESA project called Effect of Marangoni Convection on heat transfer in Phase Change Materials (MarPCM) will evaluate the degree of improvement in heat transport using thermocapillarity as convective activator of the liquid phase generated during the melting. Since this type of project needs to be performed onboard International Space Station, ISS, it is of outmost importance to know if the accelerometric environment of the Station could affect the experiment results.To do so, various 2D simulations of the solid-liquid phase change were carried out using n-octadecane as PCM material, by considering a pre-selected acceleration signal coming from a real ISS reboosting maneuver (June 24, 2021). Different gravity scenarios have been considered by changing both the intensity and the orientation of the reboosting maneuver, parallel (x direction) and perpendicular (y direction) to the thermal gradients. The acceleration levels were enhanced up to 1000 times the intensity achieved during the real reboosting in order to predict the safety margins of the ISS experiment.The results showed alterations of the liquid-solid interface, during the melting process in the high g-level scenarios considered. In these cases, the oscillatory flow pattern became more complex detecting sudden changes in the main frequency which were maintained approximately 1000 s after the reboosting ended. Nevertheless, applying real boosting maneuver no significant influence in the melting process was detected.
    Àrees temàtiques: Interdisciplinar Geociências Engineering, aerospace Engenharias iv Engenharias iii Engenharias ii Ciência da computação Astronomia / física Aerospace engineering & technology Aerospace engineering
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: xavier.ruiz@urv.cat dianacristina.dubert@urv.cat jaume.masons@urv.cat fina.gavalda@urv.cat mariajose.simon@urv.cat
    Identificador de l'autor: 0000-0002-7308-5872 0000-0003-4325-6084 0000-0001-7881-4192 0000-0002-4885-5935
    Data d'alta del registre: 2024-08-03
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://www.sciencedirect.com/science/article/pii/S0094576523006501?via%3Dihub
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Acta Astronautica. 215 455-463
    Referència de l'ítem segons les normes APA: Dubert, D; Simón, MJ; Massons, J; Ruiz, X; Gavaldà, J (2024). Numerical analysis of n-octadecane melting process in a rectangular cell under reboosting maneuver conditions. Acta Astronautica, 215(), 455-463. DOI: 10.1016/j.actaastro.2023.12.020
    DOI de l'article: 10.1016/j.actaastro.2023.12.020
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2024
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Aerospace Engineering,Aerospace Engineering & Technology,Engineering, Aerospace
    Thermocapillary convection (marangoni effect)
    Phase-change materials
    Phase change materials
    Openfoam software
    Iss vibrational environment
    Environment
    Energy-storage
    Accelerations
    Interdisciplinar
    Geociências
    Engineering, aerospace
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Ciência da computação
    Astronomia / física
    Aerospace engineering & technology
    Aerospace engineering
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