Work Package 6

Principal CFD Exercises and Guidelines

Objectives

• Identification the physical and numerical adequacy of the models used in CFD simulations.
• Formulation of deficiencies in the set of the existing models.
• The models of the first priority should be named and approaches in their development and implementation should be stated.

Description of work

The WP has the following sub-tasks.

Sub-task 6.1. Preparational phase of the concept development.

This work will be done in close co-operation with WP4, Scenario and Phenomena Ranking (SPR). All partners participate. Duration 9 months.

Identification of the phenomena, which are required to be adequately reproduced in CFD simulations related to H2 safety, including distribution and combustion phases.

Proposals formulation on physical models covering the identified phenomena to be included in the codes.

Sub-task 6.2. The concept development.

Based on partners experiences synthesis analysis of the existing and potential models, their potentials and limitations, their ability for the description of the project specific problems; recommendations on model applications for different phenomena. The following items will be analysed including specific test runs for the models:

specific problems in

• turbulence modelling related with H2 safety (HSE/HSL);
• heat transfer models,including radiation (CEA, BRE, IST, FZJ);
• condensation/evaporation models (NCSRD);
• combustion models(FZK, UU, GexCon, BRE, TNO, JRC);
• porosity models(GexCon, NCSRD);
• grid dependency problem (CEA).

Duration

Lead

Partners