Reviewing Pool Fire Simulation Results

Contours

Most projects make use of horizontal contours, however for pool fires these aren't as visually appealing as vertical contours or isosurfaces. This section will edit the temperature contour added in Tutorial 15 to display information about the pool fire cases.

 

Turn on the visibility of the Temperature at x=-6.56 contour:

  1. Select the contour so its property panel is displayed and change the Simulation to Pool Fire Inflow - Disc Base on Westerly, 5m/s as shown in the figure below. 

     

     

    Tutorial 18 - Figure 06 - changing the simulation being displayed on the already defined temperature contour

     

  2. After some processing the contour will not be displayed because the plane offset is set at a reference to the jet fire chase, to resolve this change the Plane Offset to "1.3 m" and click once in the 3D window to verify the value.

 

Your screen should resemble Figure 07 below showing the temperature contour displaying information from the Pool Fire Inflow with a disc base.

 

Tutorial 18 - Figure 07 - Temperature contour now displaying results for the pool fire case with a disc base

 

Repeat Steps 1 and 2 above to change the contour to display the temperature for the Pool Fire Inflow with a Drawn base. The contour plane can even be changed in this way - set the Plane to ZX Plane and the Plane Offset to 5.5m. Expand the Color Map dropdown and set the Palette to Black Body to get the below view of the Pool Fire with Drawn base result. 

 

Here we see how the wind over the large tanks plume eastwards thus carrying an increased temperature in that direction.

 

Tutorial 18 - Figure 08 - Temperature Contour of Pool Fire Case with Drawn Base

 

 

Isosurfaces

In a similar way, defined isosurfaces can be changed to display any completed simulations without having to go through defining a new one.

 

Switch the existing incident radiation isosurfaces (defined in Tutorial 15) to display results from the Pool Fire Inflow - Disc Base on Westerly, 5m/s by right-clicking on the Isosurfaces text in the Project Items Tab and choosing Set All To Simulation and selecting the desired case, as shown below. 

 

 

Tutorial 18 - Figure 09 - Changing the simulation synced to the isosurface visualization

 

Tutorial 18 - Figure 10 - Incident Radiation from Pool Fire Inflow with Disc Base, red is the 100kW/m2 and orange is the 10kW/m2 

 

Monitor Points

As with jet fire cases, specific values of variables such as incident radiation, temperature, soot volume fractions and generated products can be viewed using monitor points. Monitors defined prior to the simulations running will automatically update, if they are defined or changed after a case has complete, the data will need to be updated by opening the Monitor Data Window and clicking the Update button. In the below image seven monitor points were added to the southern walkway.

 

Tutorial 18 - Figure 11 - Incident Radiation values for each monitor point defined along the walkway

 

You have now completed Tutorial 18 and should have an understanding of how to setup run and review pool fire cases with in:Flux.