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! Purpose of Grid Generation

Divide volume of space surrounding complex geometries into a very large number of small volumes in which physical laws are modeled

! Method of Grid Generation Investigated

Parallel Hierarchical Unstructured Cartesian Mesh Generation (P-HUGG grid generation software system)

! Research Needs

Effective dynamic solution-adaptive grid generation algorithm

Adaptive grid refinement capability, to resolve complex geometries and evolving multiple-scale localized solution physics

Scalable parallel method for generating and partitioning large-scale grids

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! Develop Enhanced Grid Generation Capabilities

Isotropic and anisotropic grid refinement for dynamic adaptationto evolving solutions

Optimization-based and linear-elastic smoothing for quality in dynamically adapting grids

Parallel capability for inserting very thin, surface conforming local grid refinement necessary for high resolution of viscous flow physics

! Evaluate New Capabilities

Primary Test Application - Dynamic adaptive grids for surface-ship maneuvering and sea-keeping in high sea states

=*&>1/*7?@0#%1/<')6,/0)3'+/7'$'71Enables High-Resolution of Physically Complex Simulations

Transonic Shock on Airfoil Trailing-Edge Shock on Airfoil

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*Courtesy of Dr. Robert Wilson

Detail

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Improved fuel efficiency and emissions for class 8 trucks (Tenasi code simulation)

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Hazardous release in large urban environment with agent-based modeling of evacuation (Tenasi code simulation)

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Simulation of environmental air flow over Smoky Mountains (Tenasi code simulation)

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Simulation of Flow in Gulf of Mexico with High-Resolution of Coastal Areas