Computational modeling of transient hydrogen flames in the event of a nuclear reactor accident

 

 

In the event of overheating of the nuclear reactor core during a severe accident, large amount of hydrogen are generated that may be released into containment building. As the hydrogen mixes with air in the containment, it can form a flammable gas mixture. The possible combustion of hydrogen may damage relevant safety systems and may put the integrity of the containment building at risk. Computational Fluid Dynamics models for the prediction of these transient hydrogen flames need further development and validation.

 

Within the frame of the MSc thesis project, the following work plan is proposed:

1) Literature review on hydrogen combustion modelling, in order to get familiar with the topic

2) Learn how to use a CFD solver for transient flame modeling

3) Further development and validation of the hydrogen combustion models

4) Writing of MSc thesis

 

Location: the work is done as internship at NRG in Pettenproduct group Safety and Power

 

Nuclear Research & Consultancy Group (NRG) develops and provides sustainable nuclear technology for energy, environment, and health. NRG offers a wide range of services to energy utilities, government organizations and various branches of industry - including the nuclear, financial services and medical sectors. NRG is a major producer of medical isotopes in Europe.

Supervision: Prof. dr. D.J.E.M. Roekaerts and NRG staff

Further information available on request.

References: previous work on this topic, done jointly between NRG and TU Delft has been published in

 

P. Sathiah, E. Komen and D. Roekaerts,
The Role of CFD Combustion Modeling in Hydrogen Safety Management –  I: Validation Based on Small Scale Experiments.
Nuclear Science and Engineering, 248: 93-107, 2012.
 http://dx.doi.org/10.1016/j.nucengdes.2012.03.047

 

P. Sathiah, E. Komen and D. Roekaerts,
The Role of CFD Combustion Modeling in Hydrogen Safety Management – II, Validation Based on Homogeneous Hydrogen-Air Experiments. Nuclear Science and Engineering, 2012.
 http://dx.doi.org/10.1016/j.nucengdes.2012.06.023

 

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