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  A Perl Script for Running the IEC Discrete Load Cases

by Marshall Buhl
National Wind Technology Center

When generating a loads document for a wind turbine, you will usually need to run all the IEC design load cases. This can be a daunting task, and doing it one case at a time may lead to errors and inconsistencies.

To make this task a little easier, I've created two Perl scripts to automate it for you. One of them, RunIEC, runs all the discrete wind events generated by IECWind and WindMaker. Its companion, RunNTM, runs a series of normal-turbulence-model simulations. This user's guide will address use of the former.

To use this script, you will need IECWind, FAST, Crunch, and a Perl interpreter. You can obtain a freeware Perl intrepreter from ActiveState.

You may download the following files from our server:

  • RunIEC Change Log (v2.00, 0 KB, 19-November-2002)

    This is a list of changes made to the code.  Look at this text file to see if we've made worthwhile changes since you received your previous version of RunIEC.

  • RunIEC User's Guide (v2.0, 26 KB, 19-June-2001)

    This is the RunIEC User's Guide.  It explains what RunIEC does and how you can use it.  It is also included in the archive.

  • RunIEC Archive (v2.00, 90 KB, 19-November-2002)

    This is a self-extracting archive of RunIEC for PCs. It includes the RunIEC Perl scripts, the change log, the user's guide, and sample input files.

If you want to refer to the RunIEC website in a report, here is a reference you can use:

NWTC Design Codes (RunIEC by Marshall Buhl).  http://wind.nrel.gov/designcodes/miscellaneous/runiec/.  Last modified 26-May-2005; accessed 26-May-2005.


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