| Autor: |
Hulsbosch-Dam, C., Mack, A., Ratingen, S. van, Rosmuller, N., Trijssenaar, I. |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
San Jose R.Perez J.L., Proceedings of the 15th International Conference on Harmonisation within Atmospheric Dispersion Modelling for Regulatory Purposes, HARMO 2013, 747-751 |
| Popis: |
For risk analysis studies, relatively simple dispersion models are generally applied, such as Gaussian dispersion and dense gas dispersion models. For rail transport risk analyses in the Netherlands, fixed consequence distances are applied for various standard scenarios of hazardous materials releases. The advantage is that the results are uniform and are relatively independent of the party performing the calculations, which facilitates the decision making. The drawback of this method, however, is that the results are mostly (very) conservative and the implementation of safety measures cannot be taken into account. The use of CFD enables to account for local topography of the buildings in a city and additionally enables the investigation of safety measures. This paper describes the use of CFD for a hazardous material release in Tilburg city. The first scenario follows from the standard scenarios for rail transport in the Netherlands as given in guidelines for risk analysis as well as the RBM-II software. The paper describes how the CFD model is set-up for an urban environment and the results are compared to the standard risk analysis scenario. The advantages and disadvantages of both CFD and standard risk analysis methods are discussed. A second scenario is a dense gas release in the same area, which is not part of the standard scenarios. The CFD results for this scenario are compared to wind tunnel experiments. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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