This tool will calculate FDS mesh numbers that will accurately resolve your fire simulation based on the total heat release rate
The FDS User Guide recommends a D*/dx ratio between 4 and 16 to accurately resolve fire size. From the FDS User Guide: "These values were used to adequately resolve plume dynamics, along with other geometrical characteristics of the models as well. This range does not indicate what values to use for all models, only what values worked well for that particular set of models."
The D* (d-star) method is given by the following relationship:
NOTE: You should always perform a grid sensitivity analysis and verify the grid resolution yourself. This calculator should only be used as a guide!
