MCrunch (pronounced em-crunch) is a set of MatLab scripts that perform many types of analyses for one or more files.  MCrunch can operate interactively, but it is likely more efficient to use a supplied script to read a Crunch-style input file and run it in batch mode.  Although we developed MCrunch to process wind turbine test or simulation data, it may also be useful for other types of data.

As can be seen by the length of the To Do List at the end of the Alpha Change Log, the current version of MCrunch is just a beginning.  We need to add many more features, but our resources are limited.  We will establish priorities based upon personal need and feedback from the user community. The current version of MCrunch includes:

• scales and offsets
• calculated channels
• time-series plots
• statistics
• extreme events
• binning with plots
• probability density with plots
• power spectral density with plots
• fatigue analysis with plots

We have not officially released MCrunch and it is currently in testing. An alpha version is available from our MCrunch Alpha-Testers page.

You may download the following files from our server:

• MCrunch Change Log (v1.00.00, 0 KB, 21-January-2008)

  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 MCrunch.

• MCrunch User's Guide (v1.00, 671 KB, 16-May-2008)

  This is the MCrunch User's Guide.  Please refer to it when trying to understand how the program works.

• MCrunch Archive

  The official release is not yet available.

• MatLab Component Runtime Installer (v77, 171.4 MB, 16-August-2007)

  If you do not own MatLab and want to be able to use MCrunch, you will have to use the compiled version of MCrunch.  The MatLab Component Runtime (MCR) is a library of support routines you need to run the compiled version of MCrunch. The MCR is free.  You must install it as a Windows application before using the compiled version of MCrunch.  We only support Windows with the compiled version.  The other files you need to run the compiled version are located in MCrunch's Compiled folder.

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

NWTC Design Codes (MCrunch by Marshall Buhl).  http://wind.nrel.gov/designcodes/postprocessors/mcrunch/.  Last modified 16-May-2008; accessed 16-May-2008.

Additional links:

• MCrunch Alpha-Tester's Page

  If you want to test pre-release versions of MCrunch, please check this page for the latest alpha version.