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This methodology requires that all pertinent components are assembled into an integrated framework
with a solution procedure that can adequately account for the overall physico-chemical processes
occurring in the practical system of interest. The development and application of the National Combustion Code (NCC)
embodies Combustion Branch's effort in this area.
The development of the NCC has advanced the state-of-the-art in CFD-based design and analysis
of practical combustion systems. The NCC features high-fidelity representation of complex geometry,
advanced models of two-phase turbulent combustion, and massively parallel computing.
It has being used to directly provide analysis and design support for various GRC internal projects.
This research and development would further develop, implement and validate advanced computational tools
and models that would enable high fidelity, predictive simulation of low emissions combustors operating
at real-engine type conditions.
Technology/Capability:
An integrated system of computer codes using unstructured meshes and running
on parallel computing platforms.
- Gaseous flow module solving 3D Navier-Stokes equations.
- Turbulence models including the non-linear k-epsilon models for swirling flows.
- Chemistry module including NOx emission from solving species equations or
using Intrinsic Low Dimensional Manifold method.
- Turbulence-Chemistry interaction module including solving the joint probability
density function for species and enthalpy.
- Spray module for solving the liquid phase equations.
Modules in development:
- Radiative heat transfer.
- Alternative flow solver.
Status:
- Version 1.1.1 released for internal use.
- Validation cases currently being run.
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- Projects currently supported:
- SEC (Smart Engine Components)
- UEET (Ultra Efficient Engine Technology)
- RTA (Revolutionary Turbine Acceelerator)
- PDE (Pulse Detonation Engine) Technology
- Projects previously supported:
- ZCET (Zero CO2 Technology)
- Space Act Agreement with Stanford University for integrated simulation
of engine components under DOE’s ASCI Program.
Deliverables:
- The development has advanced the state-of-art in CFD-based methodology for analysis
and design of combustors.
- A key component to numerical propulsion test cell.
- A testbed for assessing/developing combustion models and computational technologies
in an engineering environment.
Researchers
Anthony C. Iannetti
Nan-Suey Liu
Jeffrey P. Moder
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