Hi,
I looked at your description and frankly not sure I understood the domain (I don't think I have enough knowledge w.r.t fluid dynamics) but if you can help me to understand the domain part then I am confident of solving your issue (if awarded). I have good experience in IT industry for about 16 years and has been coding in C,C++ and Java all these years. I have been involved in development, bug fixing and enhancements during all these years (including 3.5 years of experience in file system drivers) and all these years I have been coding in windows only. Regarding payment, you can decide after solving the issue (if you decide to award it to me).
Regards,
sairam