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Theoretical and Experimental Analysis of Fluid Sloshing on a Flying Object

Abbasi, Mohammad Hossein | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 45598 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Durali, Mohammad
  7. Abstract:
  8. Slosh phenomenon is described as the motion of the fluid’s free surface in a tank or partially-filled container. This motion can induce undesired forces that can change the path of a vehicle. In some liquid carrying vehicles these undesired changes is sensed by the driver or control system and can lead to instability. Some examples of this phenomenon are aircrafts, rockets, ships and fuel carrier trucks.
    In this project, a coupling between the dynamics of the vehicle and the contained fluid is implemented for in depth understanding of the interactions. This is done by Co-Simulation. With the help of Co-Simulation, corrective control actions can be taken and the design of more powerful controllers beyond requirements can be avoided.
    To apply this coupling, two software should be selected. For the fluid simulation, FLOW-3D and for the dynamic calculations, MATLAB is selected. Combining successive stepwise simultaneous by the two software, coupled fluid-container dynamic behavior of the system is achieved which can be used in controller design. For validation of the results, an experiment was set up by which visual observations of the phenomenon could be recorded. Experiment and the Co-Simulation results were in great agreement. This fact also validates the proposed pendulum model.
  9. Keywords:
  10. Dynamics ; Sloshing ; Coupling ; Co-Simulation ; Pendulum Model

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