Search Results - "Garimella, Rao"

Integrated surface/subsurface permafrost thermal hydrology: Model formulation and proof‐of‐concept simulations by Painter, Scott L., Coon, Ethan T., Atchley, Adam L., Berndt, Markus, Garimella, Rao, Moulton, J. David, Svyatskiy, Daniil, Wilson, Cathy J.

“…The need to understand potential climate impacts and feedbacks in Arctic regions has prompted recent interest in modeling of permafrost dynamics in a warming…”
Get full text

Multi-material swept face remapping on polyhedral meshes by Velechovsky, Jan, Kikinzon, Evgeny, Ray, Navamita, Rakotoarivelo, Hoby, Herring, Angela, Kenamond, Mack, Lipnikov, Konstantin, Shashkov, Mikhail, Garimella, Rao, Shevitz, Daniel

“…•Conservative interpolation of multi-material fields free of mesh-mesh intersections.•Second-order accurate remap at pure material regions and first order…”
Get full text

Conservative remapping of material-dependent fields between possibly misaligned material regions by Rakotoarivelo, Hoby, Garimella, Rao, Herring, Angela, Shashkov, Mikhail, Shevitz, Daniel, Kikinzon, Evgeny, Velechovsky, Jan, Lipnikov, Konstantin, Ray, Navamita

“…In this work, we propose an interpolation or remapping algorithm of material-dependent fields on polyhedral meshes where any source or target cell contains…”
Get full text

Establishing mesh topology in multi-material cells: Enabling technology for robust and accurate multi-material simulations by Kikinzon, Evgeny, Shashkov, Mikhail, Garimella, Rao

“…•We describe the X-MOF interface reconstruction algorithm in 2D, to include the topology of minimeshes created inside of multi-material cells and parent-child…”
Get full text

Finite deformation cohesive polygonal finite elements for modeling pervasive fracture by Chin, Eric B., Bishop, Joseph E., Garimella, Rao V., Sukumar, N.

“…We introduce a framework for modeling dynamic fracture problems using cohesive polygonal finite elements. Random polygonal meshes provide a robust, efficient…”
Get full text

A comparative study of interface reconstruction methods for multi-material ALE simulations by Kucharik, Milan, Garimella, Rao V., Schofield, Samuel P., Shashkov, Mikhail J.

“…In this paper we compare the performance of different methods for reconstructing interfaces in multi-material compressible flow simulations. The methods…”
Get full text

An intermediate-scale model for thermal hydrology in low-relief permafrost-affected landscapes by Jan, Ahmad, Coon, Ethan T., Painter, Scott L., Garimella, Rao, Moulton, J. David

“…Integrated surface/subsurface models for simulating the thermal hydrology of permafrost-affected regions in a warming climate have recently become available,…”
Get full text

Portage: A Modular Data Remap Library for Multiphysics Applications on Advanced Architectures by Herring, Angela, Ferenbaugh, Charles, Malone, Christopher, Shevitz, Daniel, Kikinzon, Evgeny, Dilts, Gary, Rakotoarivelo, Hoby, Velechovsky, Jan, Lipnikov, Konstantin, Ray, Navamita, Garimella, Rao

“…Portage is a scalable and extensible remap library for numerical simulations. It supports state-of-the-art remap schemes for meshes and particles in 2D and 3D…”
Get full text

A second-order accurate material-order-independent interface reconstruction technique for multi-material flow simulations by Schofield, Samuel P., Garimella, Rao V., Francois, Marianne M., Loubère, Raphaël

“…A new, second-order accurate, volume conservative, material-order-independent interface reconstruction method for multi-material flow simulations is presented…”
Get full text

Guest editorial: 17th International Meshing Roundtable Special Issue by Garimella, Rao V.

“…Issue Title: Special Issue: 17th International Meshing Roundtable - 2008; Guest Editor: Rao V. Garimella…”
Get full text

Untangling of 2D meshes in ALE simulations by Vachal, Pavel, Garimella, Rao V., Shashkov, Mikhail J.

“…A procedure is presented to untangle unstructured 2D meshes containing inverted elements by node repositioning. The inverted elements may result from node…”
Get full text

Multi-material incompressible flow simulation using the moment-of-fluid method by Schofield, Samuel P., Christon, Mark A., Dyadechko, Vadim, Garimella, Rao V., Lowrie, Robert B., Swartz, Blair K.

“…This paper compares the numerical performance of the moment‐of‐fluid (MOF) interface reconstruction technique with Youngs, LVIRA, power diagram (PD), and…”
Get full text

Boundary layer mesh generation for viscous flow simulations by Garimella, Rao V., Shephard, Mark S.

“…Viscous flow problems exhibit boundary layers and free shear layers in which the solution gradients, normal and tangential to the flow, differ by orders of…”
Get full text

Material order-independent interface reconstruction using power diagrams by Schofield, Samuel P., Garimella, Rao V., Francois, Marianne M., Loubère, Raphaël

“…We have developed a new, multi‐material, piecewise linear interface reconstruction method that correctly locates the position of each material in the mesh cell…”
Get full text

Polygonal surface mesh optimization by Garimella, Rao V, Shashkov, Mikhail J

“…A procedure has been developed to improve polygonal surface mesh quality while maintaining the essential characteristics of the discrete surface. The surface…”
Get full text

Coupling surface flow and subsurface flow in complex soil structures using mimetic finite differences by Coon, Ethan T., Moulton, J. David, Kikinzon, Evgeny, Berndt, Markus, Manzini, Gianmarco, Garimella, Rao, Lipnikov, Konstantin, Painter, Scott L.

“…•Model surface and subsurface hydrology using mimetic finite differences.•The discretization allows for accurate solutions on complex soil structures.•A new…”
Get full text

Reinforcement learning for block decomposition of planar CAD models by DiPrete, Benjamin C., Garimella, Rao, Cardona, Cristina Garcia, Ray, Navamita

“…The problem of hexahedral mesh generation of general CAD models has vexed researchers for over 3 decades and analysts often spend more than 50% of the…”
Get full text

Recovery of an arbitrary edge on an existing surface mesh using local mesh modifications by Karamete, B. Kaan, Garimella, Rao V., Shephard, Mark S.

“…This study describes an algorithm for recovering an edge which is arbitrarily inserted onto a pre‐triangulated surface mesh. The recovery process does not rely…”
Get full text

CoSyR: A novel beam dynamics code for the modeling of synchrotron radiation effects by Huang, C.-K., Li, F.-Y., Rakotoarivelo, H.N., Shen, B., Domine, J., Carlsten, B., Dilts, G., Garimella, R., Kwan, T., Robey, R.

“…The self-consistent nonlinear dynamics of a relativistic charged particle beam interacting with its complete self-fields is a fundamental problem underpinning…”
Get full text

An efficient linearity and bound preserving conservative interpolation (remapping) on polyhedral meshes by Garimella, Rao, Kucharik, Milan, Shashkov, Mikhail

“…An accurate conservative interpolation (remapping) algorithm is an essential component of most Arbitrary Lagrangian–Eulerian (ALE) methods. In this paper, we…”
Get full text