H2020Individual fellowship2017–2019

RAD-FIRE · Efficient methods for radiative heat transfer analysis in fires and water sprays for fire suppression

Horizon 2020 — Marie Skłodowska-Curie Actions

Duration
2017-09-01 → 2019-02-28
EU contribution
€146,591
Participants
1
Scheme
MSCA-IF-EF-ST

Lines connect the coordinator with its partners.

Results in brief

Efficient methods for radiative heat transfer analysis in fires and water sprays for fire suppression

Fire statistics show that every year in Europe, there are 4000 deaths due to fires, with annual cost of losses at €126bn. To address these fire safety challenges, the development of efficient fire safety engineering models and computing codes are needed. Thermal radiation is the dominant mode of heat transfer in fires and its rigorous and efficient modelling is important in fire safety engineering. RAD-FIRE aims to develop reliable and efficient radiative heat transfer models for fires and fire suppression by water sprays. Four main objectives were assigned to the RAD-FIRE project: 1. Develop and validate efficient and improved radiative transfer models 2. To develop the Experienced Researcher (ER)’s career by training him in acquiring new knowledge in fire safety engineering 3. To foster a two-way transfer of knowledge between the ER and participating organisations 4. To disseminate and communicate the results of the project. The action run for 18 months and has broadly met its main objectives. Its main conclusions can be summarised as follows. 1. A rigorous and simplified radiative heat transfer model based on the P1 spherical harmonics to solve the RTE (radiative transfer equation) was developed and applied to some real fire configurations. In addition, a box gas radiation model, based on the exponential wide band approach to handle gas radiation was implemented during the action. 2. The Experienced Researcher (ER), Dr Dombrovsky was provided training in fire modelling by the supervisors of the projects. These trainings have consisted in one to one sessions covering CFD approaches in fire models, turbulence and combustion modelling. Dr Dombrovsky also has attended the International Water Mist Conference in London in September 2018 to interact with researchers and industry members. 3. During the RAD-FIRE action, seminar and workshop presentations were given by the ER to share his radiation experience with staff and students. 4. A website was created to provide some update information on the RAD-FIRE project. The results of the project were disseminated in four scientific publications (two journals and two conferences). Contacts were made with industry during the International Water Mist Conference in London.

Data: CORDIS, © European Union

Project objective

The annual cost of losses due to fires is estimated at €126bn, equivalent to 1% of European global gross domestic product (GDP). The use of performance-based fire safety engineering which relies on fire modeling is seen as a good step to reduce fire losses. Thermal radiation is the most dominant mode of heat transfer in fires and its rigorous and efficient modeling is therefore critical for the reliability of fire safety codes employed in fire engineering. The project aims to improve the current modeling strategies of radiative heat transfer in fires and in fire suppression by water sprays where the interaction between fires and water droplets should be taken into account. Current computational methods used in fire modeling and fire suppression suffer from the main following drawbacks: (1) They use the optically gray Planck mean radiative properties of the composite medium, which are too crude to describe the real spectral behavior of thermal radiation (2) The angular dependence of the radiation intensity is usually approximated with too much details without accounting for the real radiation field; (3) The computational mesh taken from the Computational Fluid Dynamics (CFD) part of the general fire code is too detailed and not appropriate for radiative transfer calculations; (4) the computational requirements for current fire CFD codes are prohibitive and this is an obstacle.It is proposed in the scientific part of the project to develop simplified and rigorous radiative approaches which retain the physics and significantly reduce the computational time. This will lead to more efficient CFD fire codes and enhance their wider use for safety applications. The action also aims to train the Experienced Researcher in developing and acquiring knowledge in advanced fire combustion and turbulence modeling using LES (large eddy simulation) approach, CFD methods and gain a general knowledge of multidisciplinary fire safety science.

Original text from CORDIS.

Participants

  • KINGSTON UNIVERSITY HIGHER EDUCATION CORPORATION · KINGSTON UPON THAMESCoordinatorUnited Kingdom

Links

Data: CORDIS, © European Union