Seminars are held Tuesdays and Thursdays in POB 6.304 from 3:30-5:00 pm, unless otherwise noted. Speakers include scientists, researchers, visiting scholars, potential faculty, and ICES/UT Faculty or staff. Everyone is welcome to attend. Refreshments are served at 3:15 pm.
Tuesday, May 26, 2015 from 3:30PM to 5PM
Equation-Oriented Flowsheet Simulation and Optimization Using Pseudo-Transient Models
by MIchael Baldea
Assistant Professor, Chemical Engineering, UT Austin (and ICES Affiliated Faculty)
In this presentation, we introduce a new process modeling and simulation framework that relies on pseudo-transient continuation to improve the convergence properties of chemical process flow-sheet models. The steady-state models of unit operations are reformulated as differential-algebraic equation (DAE) systems that have the same steady-state solution as the original model. We present a generic model reformulation algorithm and a library of pseudo-transient models for the most widely-used unit operations. We then develop a flow-sheet optimization strategy by seamlessly integrating these models with a time-relaxation optimization algorithm implemented in gPROMS. Several industrial case studies will be discussed to illustrate the theoretical ideas.
Hosted by Robert Moser