CFD Modeling of IC engines using KIVA-3V
From autolab
Computational Fluid Dynamics (CFD) Modeling of Internal Combustion (IC) Engines using KIVA-3V
Contents |
[edit] Researchers
- Aristotelis Babajimopoulos
- Bruno Vanzieleghem
- Seung Hwan Keum
[edit] Sponsors
- Automotive Research Center (U.S. Army TACOM)
- Department of Energy (Sandia National Lab)
- General Motors
[edit] Abstract
To accurately predict and comprehend engine operation, detailed three-dimensional models are crucial. KIVA-3V sub models are being developed to improve its modeling performance. Work is being done for Compression Ignition, Spark Ignition and Homogeneous Charge Compression ignition engines. Each application requires different modeling approaches, as outlined in the goals below. All modeling approaches are being supported by experimental work performed at the W. E. Lay Auto lab and from other sources.
[edit] Goals
- To improve predictive capabilities for both spark ignition and compression ignition direct injection engines, improvements to KIVA-3V are being focused on several areas: Spray initiation and breakup models, wall impingement models, combustion models and emission models. A Low Pressure breakup model and a conservation of energy based approach wall-impingement model have been developed to improve mixture preparation predictions. The Eddy Dissipation Concept has been applied to model Compression Ignition combustion, in combination with a Soot Transport Model. A coherent flame model is under development to simulate the heterogeneous combustion of Direct Injection Gasoline Engines.
- To improve Homogeneous Charge Compression Ignition modeling, work is underway to improve modeling capabilities by incorporating detailed chemistry modeling using Chemkin into the KIVA-3V framework, while keeping computational times acceptable.
