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CDP: the Unstructured LES Code

CDP is the flagship unstructured LES code being developed by the LES group. The code is named after the late Charles David Pierce (1969-2002). CDP is designed to integrate with the block-structured TFLO code and support the center’s overarching goal of full engine simulations. CDP can also be run as a standalone LES code.

The current version of CDP has the following capabilities:

• Unstructured collocated finite volume discretization of low-Ma number variable-density Navier-Stokes equations
• Lagrangian particle tracking for liquid fuel spray
• Steady Flamelet/Progress Variable combustion model
• Dynamic Smagorinsky subgrid scale closures
• Parallel preprocessing
• Particle-mesh load balancing

In support of the ASC mission to verify and validate the developed multi-physics codes, CDP has been used to simulate a wide variety of flows where experimental data is available. For more information, see the CDP applications page.

In support of the ASC mission to demonstrate large-scale computations on the massively parallel ASC computing systems, CDP is a highly scalable parallel LES code, capable of time-dependent simulations on fully unstructured grids with over 100 million control volumes.