Objective
Inside the combustion chamber of a reciprocating engine, the flow is highly turbulent. This property directly affects the efficiency of IC engines: it enhances flame propagation, heat transfer through the walls and the quality of mix in Diesel engines. In recent years multidimensional calculations have proven a useful tool for engine designers. However, because of the large range of eddy scales that are present in the flow, numerical computations cannot capture the details of turbulent motion. Consequently a correct description of turbulent fields is essential for better combustion predictions.
The objective of this project is to improve knowledge of turbulence inside internal combustion engines. Theoretical, experimental and numerical investigations will be developed in order to devise and validate refined turbulence models for multidimensional engine calculations. The research proposed will provide the necessary background for combustion studies in IC engines.
The present study will provide new engineering statistical turbulence models, based on new information on length scales, for the prediction of flows and combustion in reciprocating engines (task 1, RWTH-ITM).
To achieve this goal, experimental data on turbulent length scales are necessary. Task 2 (CNRIM) is aimed at providing measurements concerning the behaviour of length scales in situations that are encountered in real engines.
The object of task 3 (ECL-LMFA) is to use a numerical simulation approach in a simple situation. In this case the detailed motion of the large scale turbulent eddies will be solved directly. Results will then be averaged to provide information for the engineering statistical mode1s developed in task 1. Task 4 (CNRS-CORIA) will give additional experimental data on turbulence in the presence of combustion. The influence of compression by burned gases in a constant volume chamber will be examined.
Numerical simulations of these experiments will also be provided.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
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Programme(s)
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
69134 ECULLY
France
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