Interacting with ISIM Simulations

An ISIM simulation can be interrupted by hitting any key. The user then has a choice of one of four options. 

This option allows the value of variables to be be modified or inspected using the VAL command. For example, 

Current run is aborted control is passed to user allowing values to be modified or inspected as with HOLD. 

Note Only the first letter is required (i.e., H, Q, C or S). Any other key causes the simulation to continue. 

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The ISIM program RUN with KV = 0 represents operation of the reactor under zero venting (V = 0) conditions, i.e., the bursting disc remains closed. With KV > 0 ( 100 - 1000) the program simulates the performance under emergency venting conditions. The program runs stably until the user interacts with HOLD and causes the coolant failure to occur with HOLD, VAL FC = 0 and GO. 

The simulation starts with a uniform holdup distribution through the column and with the column operating at steady-state. The response to changing inlet organic phase flow rate Gq can be studied by use of the ISIM interactive facility. 

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