Many fluid flows of practical and scientific interest involve fluids flowing past surfaces with complex shapes or with shapes that change in part due to the flow. Examples include sediment transport in estuaries, biomedical flows such as blood flow in the heart and air flow in lungs, bio-inspired propulsion and flow past moving deformable objects. Predicting the dynamics of these flows is especially challenging when the flow rates are high, but that is often the case of most interest. This project will develop a new method, called Immersed Boundary-Modeled Large Eddy Simulations, to compute flow fields in turbulent flows past complex and deforming surfaces. The method will combine numerical computation with models of turbulence near boundaries to produce accurate predictions of flow dynamics at much lower computational cost than comparable methods. The models will be formulated to handle arbitrary deformations of immersed objects. The project will also support educational initiatives to inspire K-12 students to pursue STEM careers, which will help expand the future science and engineering workforce This project will introduce a novel framework that incorporates Immersed Boundaries and turbulence closures consistently. This framework is formulated using volume-filtering and differs from regular Large Eddy Simulation filtering in the treatment of the solid-fluid interface, which is key to incorporating Immersed Boundaries and turbulence closures consistently. The propo