Aspect ratio 1 Coarse-grained modeling 1 Degrees of freedom (mechanics) 1 Dimensional dynamics 1 Direct-numerical-simulation 1 Elliptical cylinder 1 Elliptical particles 1 Fluidization 1 Freedom of motion Geometry 1 Immersed boundary methods 1 Minor axis 1 Reynolds number 1 Signed distance function 1 Turbulent flow 1 Two-dimensional 1 Upward flow 1