(508g) Efficient Simulation of Complex Fluid Phase Diagrams within Self-Consistent Field Theory Using Bayesian Optimization
AIChE Annual Meeting
2023
2023 AIChE Annual Meeting
Computational Molecular Science and Engineering Forum
Practical Applications of Computational Chemistry and Molecular Simulation
Thursday, November 9, 2023 - 2:18pm to 2:36pm
The phase diagrams of complex fluids are essential for understanding solubility and miscibility, properties of central importance in polymer formulation. At a typical industrial resolution of 10 wt%, exhaustive exploration of a ternary phase diagram requires simulation or experimentation at 63 composition points, a number which grows exponentially with the number of components. Using a new objective function derived from Self-Consistent Field Theory (SCFT) computations coupled with a constrained Bayesian optimization algorithm, we demonstrate efficient search of phase boundaries in a sample two-phase ternary modeled by polymer SCFT with 50% fewer simulations than an exhaustive search. Our approach is general, gradient-free, and can be applied to either simulation or experimental campaigns.