Abstract
| Original language | English |
|---|---|
| Title of host publication | 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition |
| Subtitle of host publication | 5-8 January 2009, Orlando, Florida |
| Editors | Rob Vermeland |
| Place of Publication | Reston, VA, USA |
| Publisher | American Institute of Aeronautics and Astronautics Inc. (AIAA) |
| ISBN (Print) | 1-56347-969-9 |
| DOIs | |
| Publication status | Published - 5 Jan 2009 |
| Event | 47th AIAA Aerospace Sciences Meeting 2009: including The New Horizons Forum and Aerospace Exposition - Orlando, United States Duration: 5 Jan 2009 → 8 Jan 2009 Conference number: 47 |
Conference
| Conference | 47th AIAA Aerospace Sciences Meeting 2009 |
|---|---|
| Country | United States |
| City | Orlando |
| Period | 5/01/09 → 8/01/09 |
Fingerprint
Cite this
}
Experimental study on fluidic control of a diffuser : influence of slit geometry. / Smid, Erik; van Noort, Hans; Hirschberg, Avraham; van Emden, Ellen; de Vries, Hein; Stobbe, Herman; Zwart, Guido; Hoeijmakers, Harry.
47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition: 5-8 January 2009, Orlando, Florida. ed. / Rob Vermeland. Reston, VA, USA : American Institute of Aeronautics and Astronautics Inc. (AIAA), 2009.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review
TY - GEN
T1 - Experimental study on fluidic control of a diffuser
T2 - influence of slit geometry
AU - Smid, Erik
AU - van Noort, Hans
AU - Hirschberg, Avraham
AU - van Emden, Ellen
AU - de Vries, Hein
AU - Stobbe, Herman
AU - Zwart, Guido
AU - Hoeijmakers, Harry
PY - 2009/1/5
Y1 - 2009/1/5
N2 - Experiments on fluidic control in an asymmetric diffuser are described. For fluidic control, fluid injection through a cross-flow slit placed upstream of the diffuser is applied. Both continuous and oscillating fluid injection is considered. Geometries of slit edges, slit width and partitioning of the slit have been varied. The control strategies combine three elementary processes: momentum injection in the flow direction, removal of the boundary layer by suction and enhancement of turbulent mixing by means of large scale 3-D vortical-flow structures. Momentum injection is only beneficial when the injection velocity is higher than the main flow velocity. In particular velocities of half the main flow velocity turn out to be most detrimental. Suction remains quite efficient even at low velocities. This explains why oscillating flow with low amplitudes is more efficient than flow with moderately high amplitudes. Partitioning of the slit does clearly promote fluidic control by inducing 3-D vortical-flow structures.
AB - Experiments on fluidic control in an asymmetric diffuser are described. For fluidic control, fluid injection through a cross-flow slit placed upstream of the diffuser is applied. Both continuous and oscillating fluid injection is considered. Geometries of slit edges, slit width and partitioning of the slit have been varied. The control strategies combine three elementary processes: momentum injection in the flow direction, removal of the boundary layer by suction and enhancement of turbulent mixing by means of large scale 3-D vortical-flow structures. Momentum injection is only beneficial when the injection velocity is higher than the main flow velocity. In particular velocities of half the main flow velocity turn out to be most detrimental. Suction remains quite efficient even at low velocities. This explains why oscillating flow with low amplitudes is more efficient than flow with moderately high amplitudes. Partitioning of the slit does clearly promote fluidic control by inducing 3-D vortical-flow structures.
U2 - 10.2514/6.2009-742
DO - 10.2514/6.2009-742
M3 - Conference contribution
SN - 1-56347-969-9
BT - 47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
A2 - Vermeland, Rob
PB - American Institute of Aeronautics and Astronautics Inc. (AIAA)
CY - Reston, VA, USA
ER -