Problems understanding HRR
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daserra
Jun 27, 2007, 1:21:19 PM6/27/07
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I have a problem with the use of HRRPUA. I defined a prescribed fire
with HRRPUA using a ramp. After the calculation with fds I did some
math with the data in the output file HRR.cvs and the values there
did not match with the input value using the for,mula HRR = HRRPUA *
area. any suggestion where this calculation goes wrong?
with HRRPUA using a ramp. After the calculation with fds I did some
math with the data in the output file HRR.cvs and the values there
did not match with the input value using the for,mula HRR = HRRPUA *
area. any suggestion where this calculation goes wrong?
dr_jfloyd
Jun 27, 2007, 2:14:09 PM6/27/07
to FDS and Smokeview Discussions
Please open as an issue on the tracker and post the simplest version
of your input that replicates the problem. In the issue please also
provide more detail (e.g. HRRPUA of X, area of Y, but got HRR of Z).
of your input that replicates the problem. In the issue please also
provide more detail (e.g. HRRPUA of X, area of Y, but got HRR of Z).
daserra
Jul 2, 2007, 8:10:49 AM7/2/07
to FDS and Smokeview Discussions
I think I found the reason for the discrepancy: When the flame is so
big that it leaves the mesh than the total HRR computed from the cvs-
file is smaller than the total HRR from the input.
big that it leaves the mesh than the total HRR computed from the cvs-
file is smaller than the total HRR from the input.
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