Comprehensive modeling of hydrodynamic forces and torques on non-spherical particles using the PIEP model
ORAL
Abstract
The first aim of this work is to present a general formulation for the force and torque experienced by an isolated non-spherical particle. Then, a working model is introduced for a spheroid subject to uniform flow. To construct this model, particle resolved direct numerical simulations (PRDNS) of flow around a spheroid are performed for sub-critical Reynolds numbers. These PRDNS consider various angles of attack, rotational Reynolds numbers, and axes of rotation. The pairwise interaction extended point-particle (PIEP) model is then utilized to model a spheroid as three spheres, and extensions to other geometries, such as cubes as superposition of nine spheres, are being considered. Lastly, this model is used to predict the dynamics of a settling spheroid. The model's results are compared to PRDNS results.
*This material is based upon work supported by the National Science Foundation Graduate Research Fellowship Program under Grant No. DGE-1315138 and DGE-1842473, by the U.S. Department of Energy, National Nuclear Security Administration, Advanced Simulation and Computing Program, as a Cooperative Agreement under the Predictive Science Academic Alliance Program, under Contract No. DE-NA0002378, and by the Office of Naval Research (ONR) as part of the Multidisciplinary University Research Initiatives (MURI) Program, under grant number N00014-16-1-2617. The views and conclusions contained herein are those of the authors only and should not be interpreted as representing those of ONR, the U.S. Navy or the U.S. Government.
–