| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 586293 | Journal of Loss Prevention in the Process Industries | 2014 | 12 Pages |
•Two-phase CFD model is developed for the prediction of dispersion characteristics of peroxy-fuels.•The developed model is validated against standard experimental data on LNG spills.•The predicted dispersion characteristics depend on overflow Reynolds number (Re).•Depending on LFL the diameter and height of vapour cloud are predicted.•Dispersion of a wide range of fuels can be predicted for similar Reynolds numbers.
Two-phase CFD (Computational Fluid Dynamics) model for characterising the spill-over/dispersion of peroxy-fuels is presented. The model is independent of type and burning rate of the spilled/dispersed fuel and considers only overflow Reynolds number (Re) to characterise the spill/dispersion behaviour. Additional simulations are performed for LNG (Liquified Natural Gas) dispersion and it is found that the model can be used for different fuels within a defined range of Re. Different scenarios with Re = 100 to 3 × 105 are investigated covering a wide range of mass flow rates, opening sizes and viscosities. Depending on Lower Flammability Limits (LFL) of the fuels spill/dispersion (vapour cloud) diameters (DCFD) and heights (hCFD) are predicted. A generalised correlation between DCFD and Re is established to predict the dispersion occurring at varying scales. The model is validated by: (1) conducting an extensive grid independent study; (2) comparing the results with the existing analytical methods and (3) comparing against the standard field test data on LNG dispersions.
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