Learn More
An accurate, effcient and scalable cubed-sphere grid framework is described for simulation of magnetohydrodynamic (MHD) space-physics flows in domains between two concentric spheres. The unique feature of the proposed formulation compared to existing cubed-sphere codes lies in the design of a cubed-sphere framework that is based on a genuine and consistent(More)
A high-order central essentially non-oscillatory (CENO) finite-volume scheme in combination with a block-based adaptive mesh refinement (AMR) algorithm is proposed for solution of the Navier-Stokes equations on body-fitted multi-block mesh. The spatial dis-cretization of the inviscid (hyperbolic) term is based on a hybrid solution reconstruction procedure(More)
In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: Keywords: Magnetohydrodynamics (MHD) High-order schemes Essentially non-oscillatory(More)
A high-order central essentially non-oscillatory (CENO) finite-volume scheme is developed for the compressible ideal magnetohydrodynamics (MHD) equations solved on three-dimensional (3D) cubed-sphere grids. The proposed formulation is an extension to 3D geometries of a recent high-order MHD CENO scheme developed on two-dimensional (2D) grids. The main(More)
A scalable parallel and block-adaptive cubed-sphere grid simulation framework is described for solution of hyper-bolic conservation laws in domains between two concentric spheres. In particular, the Euler and ideal magnetohy-drodynamics (MHD) equations are considered. Compared to existing cubed-sphere grid algorithms, a novelty of the proposed approach(More)
  • Lucian Ivan, Hans De Stercka, Scott A. Northrupb, Clinton P. T. Grothb
  • 2012
An accurate, efficient and scalable parallel, cubed-sphere grid numerical framework is described for solution of hyperbolic conservation laws in domains between two concentric spheres. The particular conservation laws considered in this work are the well-known Euler and ideal magnetohydrodynamics (MHD) equations. Our main contribution compared to existing(More)
A fourth-order accurate finite-volume scheme for hyperbolic conservation laws on three-dimensional (3D) cubed-sphere grids is described. The approach is based on a central essentially non-oscillatory (CENO) finite-volume method that was recently introduced for two-dimensional compressible flows and is extended to 3D geometries with structured hexahedral(More)
A "dirty bomb" is a type of radiological dispersal device (RDD) that has been the subject of significant safety and security concerns given the disruption that would result from a postulated terrorist attack. Assessing the risks of radioactive dose in a hypothetical scenario requires models that can accurately predict dispersion in a realistic environment.(More)
  • 1