THE DEVELOPMENT AND EVALUATION OF THREE-DIMENSIONAL MODELS OF COLD FLOW IN INTERNAL COMBUSTION ENGINES
This report describes the first phase of a programme aimed at developing a series of computer models capable of describing the air flow and turbulence in cylinders of internal combustion engines. During the course of this first phase programme a computer code has been developed which is capable of simulating the flow and turbulence field within a limited but useful range of chamber geometries. The computer code allows for the description of simple cylinder head recesses and offset "bowl in pistons" along with two possible representations of values. Velocity and turbulence measurements have been made using laser doppler anemometry on plexiglass engines for code evaluation. Flow measurements at the valve have been made to establish inlet conditions for steady and unsteady flows and in-cylinder data acquired for a range of chamber geometries. Extensive code testing has been performed to ensure that the code is free of computing "bugs". Code evaluation has been made against the experimental data base and against results obtained from other studies. Workzhops have been held for the purpose of familiarising the JRC with the operation of the code. A fully documented version of the code has been released to the members of the JRC who have mounted it on their own computers in support of their internal research and development programmes. All the major objectives of the programme have been achieved and it is the intention of the JRC to continue this work hopefully with the continued support of the Commission.
Bibliographic Reference: EUR 10812 EN (1986) MF, 13 P., BFR 150, BLOW-UP COPY BFR 200, EUROFFICE, LUXEMBOURG, POB 1003
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Record Number: 1989125027000 / Last updated on: 1987-03-01
Available languages: en