Is anyone aware of any work on simulating pipe organs?  

I am working on a pipe organ in software. I have been using
a number of techniques, including spectral analysis and
synthesis. As part of my work, I have built a Windows application
which extracts partials from Csound phase vocoder analyses,
for display and modification.

I'm waiting now on the postman to deliver some AES preprints
on the physical modelling of organ pipes by Slawomir Zielinski.

John