Magyari, Balint (2022) Jumping into Fluid Dynamics: Investigating the Irregular Flight Path of Rotating Spheres. Bachelor's Thesis, Chemical Engineering.
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Abstract
To understand how the flight path of a rotating football changes as a function of rotating frequency and altitude, computational analyses were completed using five different RANS tur- bulence models, namely κ-ε, κ-ω, SST, realizable κ-ε, and v2-f. This research paper aimed at validating the relationships between the Magnus force (lift) and the independent variables of frequency and altitude described by the Kutta–Joukowski theorem. The lift per unit length was proven to be directly proportional to the frequency of rotation of the ball. The linear regression models were proven to precisely follow the sets of data points however, the magnitudes of the lift were lower than those predicted by the Kutta–Joukowski theorem. The same observations were made for the altitude study, where it was proven that the Magnus force forms a negative exponential relationship with the height above sea level. However, the magnitudes of the exper- imental data points did not match those described by the theorem. Out of the five turbulence models, the SST model returned results closest to the prediction.
| Item Type: | Thesis (Bachelor's Thesis) |
|---|---|
| Supervisor name: | Druetta, P.D. and Raffa, P. |
| Degree programme: | Chemical Engineering |
| Thesis type: | Bachelor's Thesis |
| Language: | English |
| Date Deposited: | 24 Jun 2022 10:48 |
| Last Modified: | 24 Jun 2022 10:48 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/27367 |
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