A detailed analysis of the design and performance of passive baffles for sloshing reduction in microgravity is presented. Sloshing dynamics are investigated for a rectangular container holding a × 15 mm2 volume of liquid with properties similar to a 5 cSt silicone oil. The system response to a pulse-like perturbation is analyzed in terms of the sloshing frequency ω, decay time , and damping ratio , characterizing the decay rate relative to ω. We explore first simple rectangular baffles, parameterized in terms of their length and height, orientation, and position of their center, finding that the vertical centered baffle is optimal for its good performance and simplicity. The analysis is further extended to other designs of higher complexity, including multiple-baffle arrangements, cross-shaped baffles, and free surface baffles. Finally, motivated by the recent work of Peromingo et al. [“Sloshing reduction in microgravity: thermocapillary-based control and passive baffles,” Phys. Fluids 35, 102114 (2023)], we also demonstrate the effectiveness of passive baffles combined with active thermocapillary control. As a whole, the present results suggest a maximum achievable sloshing reduction of approximately 90%.
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November 2023
Research Article|
November 15 2023
Sloshing reduction in microgravity with passive baffles: Design, performance, and supplemental thermocapillary control
C. Peromingo
;
C. Peromingo
(Formal analysis, Investigation, Software)
E-USOC, Center for Computational Simulation, Universidad Politécnica de Madrid
, Madrid, Spain
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P. Salgado Sánchez
;
P. Salgado Sánchez
a)
(Formal analysis, Investigation, Writing – original draft)
E-USOC, Center for Computational Simulation, Universidad Politécnica de Madrid
, Madrid, Spain
a)Author to whom correspondence should be addressed: pablo.salgado@upm.es
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D. Gligor
;
D. Gligor
(Conceptualization, Formal analysis, Software)
E-USOC, Center for Computational Simulation, Universidad Politécnica de Madrid
, Madrid, Spain
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A. Bello
;
A. Bello
(Supervision, Writing – original draft)
E-USOC, Center for Computational Simulation, Universidad Politécnica de Madrid
, Madrid, Spain
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J. Rodríguez
J. Rodríguez
(Funding acquisition, Project administration, Supervision)
E-USOC, Center for Computational Simulation, Universidad Politécnica de Madrid
, Madrid, Spain
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a)Author to whom correspondence should be addressed: pablo.salgado@upm.es
Physics of Fluids 35, 112108 (2023)
Article history
Received:
September 01 2023
Accepted:
October 19 2023
Connected Content
A companion article has been published:
Slowing sloshing in space
Citation
C. Peromingo, P. Salgado Sánchez, D. Gligor, A. Bello, J. Rodríguez; Sloshing reduction in microgravity with passive baffles: Design, performance, and supplemental thermocapillary control. Physics of Fluids 1 November 2023; 35 (11): 112108. https://doi.org/10.1063/5.0174635
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