Wave parameterisation in modelling of oil emulsification
- Authors: Marko Jaćimović, Davor Kvočka, Tanja Tofil, Dušan Žagar
- Citation: Acta hydrotechnica, vol. 28, no. 49, pp. 133-147, 2015.
- Abstract: We describe the upgrade of a simple numerical model (EMU) for predicting the time of oil emulsification and the type of emulsion, based on the Fingas (2010) method. The input parameters are the oil properties and wave characteristics. We rely on empirical prediction of wave parameters. In the original model only the Bretschneider’s (1952) empirical wave model suitable for predictions in deep water was used. In the upgraded model we use four additional wave parameterisation methods: CEM, Seck-Hong and SMB methodfor both shallow and deep water. Three types of oil with significantly different properties were used to demonstrate the behaviour of oil. We compare the results of different wave parameterisation methods for computation of initial time of emulsification, for the emulsion formation time and for the total time of emulsification. In chosen conditions, the selection of adequate empirical wave model is important for low wind and short fetch. Comparison to the wave measurements and observations are needed in order to choose the most appropriate wave parameterisation.
- Keywords: oil spill, water-in-oil emulsification, emulsification time, emulsion stability, wave parameterisation, EMU model
- Full text: a49mj.pdf
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