How to make use of HRR curve?

[Saleth-john]

I have multiple HRRPUA curve for single material (i.e. cone calorimeter heat fluxes of 25kW/m^2, 50kW/m^2, 75kW/m^2). which one should I apply for a material? do I need to make any correlation between these curves to get actual HRRPUA curve?

Thanks in advance.

[mcgratta]

There is a new feature for just this situation. Look up SPyro in the User's Guide.

[Saleth-john]

Thanks for the reply @mcgratta. I went through the SPyro section in the user's guide. please correct me if my understanding is wrong.

In actual model, we need to apply any one of the HRRPUA curve (either one of 25kW/m^2, 50kW/m^2, 75kW/m^2), FDS will extrapolate the data automatically (obviously with some deviation from test data) based on the external heat flux from the burner.

[drjfloyd]

With the current release you can use all three curves. With 6.9.1 you can only use one.

[Saleth-john]

Thanks @drjfloyd