DOI: 10.1615/TSFP5
DIRECT NUMERICAL SIMULATION OF A TRANSITIONAL JET IN CROSSFLOW WITH MIXING AND CHEMICAL REACTIONS
摘要
The paper describes DNS of a jet in crossflow at Re=650 and jet-to-crossflow velocity ratio R=3.3. Laminar boundary conditions are employed which makes the present flow configuration advantageous for benchmarking. Use is made of local grid refinement in the region of transition to turbulence. Comparison with Re=325 is carried out for some appropriate quantities. Nine passive scalars, reacting and non-reacting, are introduced. This allows to systematically study the influence of the Schmidt number and the Damkohler number with first order reactions. The presence of chemical reactions is a particular feature of the present study. Quantitative results for mean flow and turbulent quantities are provided and discussed. Also, the interaction between turbulence and scalar is quantified. Reference data are made available for later benchmarking.