CFD Review  
Serving the CFD Community with News, Articles, and Discussion
 
CFD Review

User Preferences
Site Sponsorship
Headline Feeds
Mobile Edition
Privacy Policy
Terms of Service
twitter

Submit a CFD Story

Site Sponsors
Siemens PLM Software
Pointwise: Reliable CFD meshing
Software Cradle

Tell a Friend
Help this site to grow by sending a friend an invitation to visit this site.

CFD News by Email
Did you know that you can get today's CFD Review headlines mailed to your inbox? Just log in and select Email Headlines Each Night on your User Preferences page.

 
Convergent Science Partners with LLNL on Chemistry Solver
Posted Tue November 30, 2010 @09:39AM
Print version Email story Tweet story
News Convergent Science, Inc. (CSI) has licensed a combustion chemistry code -- the Multi-Zone Chemistry Solver -- for designing engines from Lawrence Livermore National Laboratory (LLNL).

The Multi-Zone Chemistry Solver is an added-value capability of CSI's industry leading engine computational fluid dynamics (CFD) software, CONVERGE.


Sponsor CFD Review

Utilizing CSI's computational fluid dynamics software with LLNL's efficient detailed chemical kinetics approach provides a powerful tool for design optimization of combustion processes in piston engines, including compression ignition engines (Diesel), spark ignition (gasoline) and for development of advanced engine combustion concepts, such as Homogeneous/Premixed Charge Compression Ignition (HCCI/PCCI), Low Temperature Combustion, and other High Efficiency Clean Combustion (HECC) approaches.

The multi-zone chemistry solver computes finite rate chemistry phenomena in a scalar state-space, as opposed to the physical space in which the fluid mechanics is solved. This approach allows for aggregating the solution of not-necessarily-connected regions of the geometry that undergo similar scalar-state history (e.g., temperature-equivalence ratio history).

The multi-zone approach has inherent efficiencies and is further enhanced with parallelization of the chemical zone calculations in conjunction with the message-passing-interface (MPI) library, as well as implementation of highly efficient numerics for kinetic reactor solution.

The integration of the multi-zone solver will allow CONVERGE users to perform engine CFD simulations considering detailed chemistry with drastically reduced computational requirements. Therefore, CONVERGE users will benefit from shorter run times and the ability to utilize larger chemical mechanisms to accurately predict phenomena such as knock, HCCI and flame propagation.

“We are thrilled to work with major R&D facilities like LLNL to leverage their world class expertise in multi-zone chemistry technologies. Significantly speeding up the chemistry, in addition to standard CONVERGE features such as the elimination of all user meshing time and adaptive mesh refinement, will assure that CONVERGE remains the code of choice for engine CFD analysis,” states Dr. Daniel Lee, director of business development at Convergent Science Inc.

Dr. Daniel Flowers, associate program leader for Combustion and Alternative Fuels at LLNL, observes, "We use CSI's parallel fluid mechanics capabilities, combined with LLNL's efficient computational chemistry, to give us the ability to conduct high-fidelity simulations of engine combustion that resolve flow in complex geometries and include the large detailed chemical kinetic mechanisms needed for practical hydrocarbon fuels."

[ Post Comment ]

Speed and Accuracy of CFD: Achieving Both Successfully | Pointwise CFD Mesher Features Hybrid Boundary Layer Meshing  >

 

 
CFD Review Login
User name:

Password:

Create an Account

Related Links
  • Convergent Science
  • Lawrence Livermore National Laboratory
  • More on News
  • Also by nwyman
  • This discussion has been archived. No new comments can be posted.

    You will soon meet a person who will play an important role in your life. All content except comments
    ©2017, Viable Computing.

    [ home | submit story | search | polls | faq | preferences | privacy | terms of service | rss  ]