Service Communautaire d'Information sur la Recherche et le Développement - CORDIS

Experimental data, flashing jets, large-scale

The development of improved models for flashing liquids releases in industrial environments would be achieved by a concerted action comprising the design and execution of sensible experimental programmes. INERIS performed large-scale releases under realistic conditions to provide validation data for the developed models and simulation tools.

The project has provided high-quality data sets, both at laboratory scale and at large scale, of the flashing expansion in the near field. The experiments have employed advanced measurements techniques such as laser techniques and fast response probes, as well as conventional techniques. The obtained data have been used to assist in the development and validation of detailed models of the source processes during accidental release of pressurised liquids.

A variety of experimental conditions were studied:
- Type of LPG (propane, butane)
- Pressure in the tank
- Nozzle configuration (size and shape)
-Obstacle configuration (free jet, impinging jet, distance of impact)

The task of INERIS for FLIE project was to carry out large-scale experiments to collect data useful for the improvement of the existing dispersion models. These tests made it possible to clarify the weaknesses of the calculation models of source terms (evaluation of the mass-flow, of the quality of release, the phenomenon of the aerosol creation, pool evaporation). In spite of the many practical and technical difficulties related to the implementation of this type of tests, we realised nearly a hundred experiments and recorded sufficient exploitable data to be able to improve the dispersion models in the near field as well as the sources terms models. However, the various accumulated delays did not make it possible to exploit these measurements ahead. Therefore it is now important to devote time to the fine exploitation of these results in order to concretise this three years investment by the creation of a calculation model.

Informations connexes

Reported by

Parc Technologique ALATA