Journal article
LES of turbulent jet in cross-flow: Part 1 – A numerical validation study
Department of Wind Energy, Technical University of Denmark1
Meteorology, Department of Wind Energy, Technical University of Denmark2
Department of Mechanical Engineering, Technical University of Denmark3
Fluid Mechanics, Coastal and Maritime Engineering, Department of Mechanical Engineering, Technical University of Denmark4
The paper presents results of a LES based numerical simulation of the turbulent jet-in-cross-flow (JICF) flowfield, with Reynolds number based on cross-flow velocity and jet diameter Re=2400 and jet-to-cross-flow velocity ratio of R=3.3. The JICF flow case has been investigated in great detail, involving conduction of two independent precursor simulations, prior to the main JICF simulation, as the considered case has turbulent inflow conditions on both jet and cross-stream side.
The LES results are directly compared to pointwise Laser Doppler Anemometry (LDA) measurements, showing a very good agreement on the level of various statistical quantities in all flow regions but the immediate jet-to-cross-flow exhaustion zone. Several LES computations involving grids of up to 15million grid points have been conducted, showing no improvement in the agreement between numerical results and measurements, possibly indicating a LDA measurement problem in this particular region.
| Language: | English |
|---|---|
| Year: | 2012 |
| Pages: | 18-34 |
| ISSN: | 18792278 and 0142727x |
| Types: | Journal article |
| DOI: | 10.1016/j.ijheatfluidflow.2011.12.009 |
| ORCIDs: | Cavar, Dalibor and Meyer, Knud Erik |
