CONICET | Buscador de Institutos y Recursos Humanos

p { margin-bottom: 0in; direction: ltr; color: rgb(0, 0, 0); text-align: justify; widows: 2; orphans: 2; }p.western { font-family: "Times New Roman",serif; font-size: 11pt; font-weight: bold; }p.cjk { font-family: "Times New Roman",serif; font-size: 11pt; font-weight: bold; }p.ctl { font-family: "Times New Roman",serif; font-size: 10pt; }a:link { color: rgb(0, 0, 255); } Abstract. The optimization of internal combustion engines is an important strategy to reduce theglobal energy requirements and pollutant emissions. The design of new engines needs to use efficientengineering tools to reduce development time and economic resources. Regarding to this, computationalfluid dynamics in general and the OpenFOAM R suite in particular have shown to be adequate tools forthe development of engines with the advantages for the latter of being a free code with a large userscommunity.Typical engine simulation cases involve multiple fluid regions with relative motion. The enginekinematics requires a mesh adaptation in order to preserve the connection between the subdomaininterfaces and to manage large mesh deformations. In this context, this work presents an extensionof the OpenFOAM R ?s dynamic mesh library which performs automatic mesh topological actions forengine problems. The implementation combines the mesh topological modifiers like layering for thetreatment of mesh large deformations and sliding interfaces to accomplish the connection of fixed andmoving subdomains. Further, a set of new features are added on the layering mesh modifier to allow theconfiguration of multiple motion regions and the use of different mesh size zones.The library is used within a compressible flow solver for the resolution of a real problem. A new designof an opposite piston engine is tested and the performance of the in-house code is evaluated.

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