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[A mukherjee]

Hi everyone,
I am facing some problem in adjusting the value of sensitivity in the recycle block which we use in UniSim/hysys.I want to know how can I set the value of sensitivity?What are the parameters should we check before keeping the value of sensitivity as .1 or 10? How are the value of parameters(eg.vapour fraction,enthalpy,flow rate )of streams calculated at the downstream of recycle block depending on sensitivity?
For example if the vapour fraction of the stream is 1 at the upstream of R Block is 1 .then what will be its value after R Block,if we specify the sensitivity of vapour fraction as 10 in R Block.
Thnxx in advance...