University of Twente Student Theses


Modelling liquid sloshing in rotating t anks

Brentjes, A. (2015) Modelling liquid sloshing in rotating t anks.

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Abstract:In this report the viability of modelling liquid in spinning and/or oscillating spherical tanks using a solid body analogue is investigated. In previous works (f.i. Sumner 1)) pendulum analogues have been validated for non-spinning tanks. The pendulum model is extended to a gyroscope model, to account for effects of angular momentum and inertia. Five cases of half-filled spherical tanks in earth gravity, subject to various combinations of spin and oscillation are simulated using CFD. A gyroscope subject to the same excitation is simulated numerically. The movement of the systems’ centre of mass is compared, and used to tune the gyroscope’s parameters. It is found that the gyroscope model predicts the initial system response reasonably well. Various effects such as splashing and surface waves cause the gyroscope prediction to fail for longer time-frames in most cases. The concept is considered sufficiently valid to continue with further research including physical experiments.
Item Type:Internship Report (Master)
ESTEC, the Netherlands
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Mechanical Engineering MSc (60439)
Keywords:Sloshing, Pendulum model, Gyroscope, CFD
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