Digital Image Analysis (DIA) has been employed to characterize the time evolution of a bubble injected from a single orifice into a pseudo 2-dimansional gas-solid fluidized bed. The injected bubble diameter increased with the square root of time before detachment. During bubble free flight in the bed, its diameter remains approximately constant. The center of mass of the bubble increases with t...

Input modeling software tries to fit standard probability distributions to data assuming that the data are independent. However, the input environment can generate correlated data. Ignoring the correlations might lead to serious inaccuracies in the performance measures. In the past few years, several dependence modeling packages with different properties have been developed. In our dissertation...

In this work, we introduce a novel data-driven formulation, the Koopman-Linearly-Time-Invariant (Koopman-LTI) analysis, for analyzing Fluid-Structure Interactions (FSI). An implementation of Koopman-LTI on subcritical free-shear flow over prism at Re=22,000 corroborated configuration-wise universal Koopman system, which approximated configuration's nonlinear dynamics with stellar accuracy. The ...

Systems driven by multiple physical processes are central to many areas of science and engineering. Time discretization multiphysics systems is challenging, since different have levels stiffness characteristic time scales. The multimethod approach discretizes each process with an appropriate numerical method; the methods coupled appropriately such that overall solution has desired accuracy stab...