Flow Field Computation for Simplified High Voltage Gas Circuit Breaker Model by Upwind Meshfree Method

Abstract

To effectively design high voltage (HV) circuit breakers, the upwind meshfree (UM) scheme which was proposed by Choe et al.[5] and Park et al.[6] is tested. The UM scheme is implemented to a simplified model for the HV circuit breaker and showed a robust behavior even in a severe boundary condition. A good shock capturing is shown in the computations and a delicate gas diffusion through a slit is also computed, which is usually difficult to catch. Vector splitting method is employed to exploit the merit of meshfree methods in the hyperbolic problems.

Virtual Interpolation Point Method for Viscous Flows in Complex Geometries

“…The use of a virtual staggered structure arrangement, which stores all the variables at the same physical location and employs only one set of nodes using virtual interpolation points(see, Figure 1), reduces the geometrical complexity. In the present study, the VIP scheme, as in Park et al [6,7,8] is applied to satisfy the continuity for the local stencil in complex domains.…”

“…using the MLS approximations in (7). The Laplacians in (3), ( 4),and ( 6) are all replaced with the operator in (8).…”

“…Recently, an upwind meshfree method using virtual local stencil approach was presented by Park et al [6,7,8], who simulated the compressible flow for the high voltage gas blast circuit breaker with the moving boundary.…”