Thesiss

6 works - Thesiss.

"6" Result

This work is on recursive state estimators for general classes of nonlinear stochastic models. First, a brief coverage of linear and nonlinear state estimation is given. Then a couple of numerical modifications are being introduced for extending the applicability of the extended…

In this document a highly detailed stochastic soot model limited to 0D simulations is coupled to 3D domains through the use of a Lagrangian parcel-Eulerian fluid method. Although both the stochastic soot model used and the Lagrangian parcel-Eulerian fluid method have long histor…

Presented in this dissertation are novel models and techniques to analyze the whirling vibration of drillstrings during oil and gas (O&G) operations. Mathematical models are developed to solve for the dynamic whirl response. For this purpose, the drillstring is modeled by a syst…