Projecte llegit
Títol: Acoustic streaming for propellant management in orbit
Estudiants que han llegit aquest projecte:
PELLICO, GIUSEPPE (data lectura: 17-10-2025)- Cerca aquest projecte a Bibliotècnica
PELLICO, GIUSEPPE (data lectura: 17-10-2025)Director/a: GONZÁLEZ CINCA, RICARD
Departament: FIS
Títol: Acoustic streaming for propellant management in orbit
Data inici oferta: 03-02-2025 Data finalització oferta: 03-10-2025
Estudis d'assignació del projecte:
- MU AEROSPACE S&T 21
| Tipus: Individual | |
| Lloc de realització: EETAC | |
| Paraules clau: | |
| Acoustic streaming, Heat transfer, Microgravity, Space Exploration | |
| Descripció del contingut i pla d'activitats: | |
| Acoustic streaming for the propellant management in orbit | |
| Overview (resum en anglès): | |
| This thesis investigates the influence of acoustic waves on heat transfer in microgravity from a
numerical perspective. Experimental tests were carried out the UPC Space Exploration Lab under both terrestrial and microgravity conditions to assess the differences in heat transfer between the two environments and the effectiveness of this forced convection method. These tests were conducted in a microgravity-simulated environment at the ZARM drop tower in Bremen. A numerical model in COMSOL has been developed and validated to study the wave prop- agation inside a fluid and the consequent formation of an acoustic stream. When properly tuned in both amplitude and frequency, the acoustic source generates a flow that displaces the hotter fluid away from the heater surface, thereby preventing the onset of boil-off. During this thesis work, different domain and boundary condition are tested to analyze some different scenarios. Finally, a comparison is made between the experimental and numerical results, followed by further analyses aimed at achieving a closer representation of the real space environment. These last tests are characterized by a heat flux of q = 1000 W /m2 , which better matches the heat flux encountered in space. It should be noted that, in general, space tanks are covered with insulating materials, so this heat flux would not reach the internal fluid. However, to remain conservative and consider a worst-case scenario, this value will be used. Under these final conditions, corresponding to a feasible heat load in space, a temperature reduction of 10% is achieved compared to the case without an acoustic source. |
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