i need to write Fortran code for aspen plus simulation but I'm practicing the ultrafiltration example I got the error. "Block membrane is not in mass balance... The total flow rate is zero..." Please what can I do
I experienced same error during coding for a different problem, then i reviewed my code and figured out problem. Please compare your code with Aspen code carefully, there should be something missing in your code.
e.g,
Error code
exp(1) = -den(1)
exp(1) = den(1) - den(2)
after correction
exp(1) = -2den(1)
exp(1) = 3den(1) - 2den(2)
No more error.
i hope it will be helpful.
Thanks EJaz I couldn't find this code in the file please how do I include thses codes
@ Samuel
Above code was just a example to show the root of above error. This code has nothing to do with your problem. when i solved the example of ultrafiltration membrane, i did not face such a problem. Please review your code carefully.
Thanks
Alright Ejaz.. I think the problem is with V8.8 I'm using V8.6 and it is running fine... Thanks so much
I am using V8.8 and its owesome. When writing your FORTRAN make sure when you define your variables, they linked to either your stream or block. Also be careful when you write your formula that relates the variables as this tends to make ASPEN PLUS export the results to the wrong block resulting in error.
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