![]() ![]() POD identifies the most energetic modes and helps flow field reconstruction by reduced number of modes. Here, we analyze the flow past a rotating cylinder at a super-critical rotation rate (=2.5) by the enstrophy-based proper orthogonal decomposition (POD) of direct simulation results. The time integration of the flow equations is carried out for very large dimensionless time. The non-dimensional rotation rate, (ratio of the surface speed and freestream speed), is varied between 0 and 5. The Reynolds number based on the cylinder diameter and free-stream speed of the flow is 200. A stabilized finite element method is utilized to solve the incompressible Navier Stokes equations in the primitive variables formulation. This is due to the local nature of the MIT bag boundary condition, whilemore » the spectral boundary condition is nonlocal.« lessįlow past a spinning circular cylinder placed in a uniform stream is investigated via two-dimensional computations. The rotating thermal expectation values and the Casimir divergences have different properties depending on the boundary conditions applied at the cylinder. We also study the Casimir divergences on the boundary. If the radius of the cylinder is sufficiently small, rotating thermal expectation values are finite everywhere inside the cylinder. Two possible boundary conditions for the fermion field on the cylinder are considered: the spectral and MIT bag boundary conditions. ![]() We study rotating thermal states of a massless quantum fermion field inside a cylinder in Minkowski space-time. Massless rotating fermions inside a cylinderĭOE Office of Scientific and Technical Information (OSTI.GOV)ĪmbruÅŸ, Victor E., E-mail: Winstanley, Elizabeth ![]()
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