Immersogeometric Analysis

Immersogeometric analysis is a geometrically flexible technique for solving computational fluid-structure interaction (FSI) problems involving large, complex structural deformations. In immersogeometric analysis, a surface representation of a solid object is immersed into a non-boundary-fitted discretization of the background fluid domain. This background discretization is then used to solve for the flow physics using finite-element-based computational fluid dynamics (CFD). The main motivation behind the immersogeometric method is to alleviate the difficulties associated with mesh generation around complex geometries, while still maintaining high accuracy of the simulation results. This project is being developed in collaboration with Ming-Chen Hsu at Iowa State University.

Flow over B-Rep CAD Models

We have developed methods to perform fluid-flow simulations over complex boundary-representation (B-Rep) based CAD models consisting of NURBS surfaces. Please refer to the following CAGD paper for more details.

Rapid Model Preprocessing with Analytic Surfaces

We have extended our immersogeometric methods to perform fluid-flow simulations over complex CAD models consisting of analytic surfaces. We have also developed methods to generate adaptively-refined fluid domain mesh that is able to accurately capture the flow near the immersed surfaces. Please refer to the following CAGD paper for more details.