In this paper, the equivalent circuit model of the slotted ground structures (SGSs) underneath the microstrip line is presented. The slotted ground structures are etched off on the ground plane to provide the stopband over the desired frequency range. The frequency response of the stopband can be determined by the dimensions of SGSs. The interaction between the SGSs can equivalent to a parallel...

This paper investigates the feasibility of a high order finite difference weighted essentially nonoscillatory(WENO) scheme for large eddy simulations(LES) with implicit subgrid scale model. In this paper, the 5th-order WENO scheme with a conservative 4th-order central differencing for viscous terms are used to simulate the flow past a circular cylinder at ReD = 3900. The turbulent effects near ...

The unsteady compressible flow around a body tail projectile is numerically solved with a Large Eddy Simulation (LES) method, Smagorinsky-Lilly model was used as the Sub-Grid Scale (SGS). The computed results are obtained in supersonic flow regime for a viscous fluid in order to determine the aerodynamic coefficients with different angles of attack. The flow around a body tail projectile was so...

This report describes the state of smart grid security in Europe, specifically the Netherlands, and the cyber security of substations in particular. The focus of this study is the perception of risks and threats in smart grid cyber security and the international standards implemented in smart grids. The created overview is based on semi-structured interviews with 13 experts originating from eig...

MEMBERS OF THE SALIVARY GLAND SURFACE PROTEIN FAMILY (SGS) ARE MAJOR IMMUNOGENIC COMPONENTS OF MOSQUITO SALIVA Jonas G. King, Kenneth D. Vernick and Julián F. Hillyer From the Department of Biological Sciences and Institute for Global Health, Vanderbilt University, Nashville, TN 37235, and the Department of Parasitology and Mycology, Institut Pasteur, Paris, France Running title: SGSs are immun...

Subglottic stenosis is considered one of the most complex and challenging aspects of pediatric otolaryngology, with the most common etiology being prolonged endotracheal intubation. The surgical treatment of SGS can be either endoscopic or open, but recent advances have pushed the limits of the endoscopic approach so that in practice an open laryngotracheal surgical approach is considered only ...

Purely dissipative eddy–viscosity subgrid models have proven very successful in large–eddy simulations (LES) at moderate resolution. Simulations at coarse resolutions where the underlying assumption of small–scale universality is not valid, warrant more advanced models. However, non-eddy viscosity models are often unstable due to the lack of sufficient dissipation. This paper proposes a simple ...

High Reynolds number turbulent flows of incompressible fluids in plane channels and annuli are simulated using a finite difference procedure which integrates the NavierStokes equations in time and in three-dimensional space. This paper describes the finite difference procedure and the subgrid scale (SGS) motion model. The model differs from earlier ones in the following points. The finite diffe...

Existential rules, also known as data dependencies in Databases, have been recently rediscovered as a promising family of languages for Ontology-based Query Answering. In this paper, we prove that disjunctive embedded dependencies exactly capture the class of recursively enumerable ontologies in Ontology-based Conjunctive Query Answering (OCQA). Our expressive completeness result does not rely ...

The feasibility of using an industrial compressible CFD code for large eddy simulations (LES) is evaluated. Dynamic subgrid scale (SGS) models developed at CTR have been implemented into the code and tested in a fully developed turbulent channel flow. In order to evaluate the effects of the SGS model compared with the numerical dissipation inherent in the upwind-biases schemes, computations wit...