Towards Wall modeled Large Eddy Simulation of a Turning Body of Revolution

Accurate simulation of flow over bodies of revolution (BOR) is necessary for force and moment predictions of maneuvering vehicles in naval applications. Large eddy simulation (LES) can provide the means for the level of fidelity needed; however, LES for a BOR still remains challenging for practical engineering applications due to the vast range of scales and large domain size needed to capture all the relevant flow features. In this work, we present an approach to simulate flow over a BOR under steady turning conditions. To reduce the domain size, analytical potential flow solutions are used for the far-field boundary condition. To reduce the near-wall resolution requirement, a wall model is used as a wall stress boundary condition. To keep to the benefits of a simple Cartesian grid, the BOR is mapped to a flat plate where computations are performed. This approach permits LES of these challenging flows to inform maneuvering predictions. First, the modeling framework needed is discussed along with the associated cost savings. Then, the numerical aspects of the code are outlined. Finally, preliminary details for performing wall modeled LES of a BOR undergoing steady turning conditions are discussed.