At the moment, I am working on a project that pertains to the decomposition of ammonia utilizing a PFR reactor. While the isothermal PFR simulation proceeds smoothly, all attempted solvers fail to provide a solution for the adiabatic PFR. Are there any measures that I can undertake in order to address this issue?
Just to inform you, Aspen HYSYS software is indeed available at our school, but its usage is limited to lab computers, which means I cannot access it outside of class.
When I ran your simulation with the default ODE Solver Volume Step of 0.1, selecting the adiabatic PFR did not converge. However, try reducing that setting down to 0.01 (under the PFR's Advanced tab). The Runge-Kutta solver converged for me after about 10 sec compute time after changing that setting.
Best,
Pete McGrail
Leapfrog Technical Services
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Hi, there!
At the moment, I am working on a project that pertains to the decomposition of ammonia utilizing a PFR reactor. While the isothermal PFR simulation proceeds smoothly, all attempted solvers fail to provide a solution for the adiabatic PFR. Are there any measures that I can undertake in order to address this issue?
Just to inform you, Aspen HYSYS software is indeed available at our school, but its usage is limited to lab computers, which means I cannot access it outside of class.
Hi Salvador,
When I ran your simulation with the default ODE Solver Volume Step of 0.1, selecting the adiabatic PFR did not converge. However, try reducing that setting down to 0.01 (under the PFR's Advanced tab). The Runge-Kutta solver converged for me after about 10 sec compute time after changing that setting.
Best,
Pete McGrail
Leapfrog Technical Services