| 摘要 |
This invention relates to a method of controlling vortex bursting on an aerodynamic surface ( 20 ) associated with separated flows and, in particular, relates to control of separated flows over aerodynamic or hydrodynamic surfaces ( 20 ) that may have highly swept leading edges ( 26 ). A method of controlling vortex bursting on an aerodynamic surface or a hydrodynamic surface ( 20 ) is provided, the surface ( 20 ) comprising a gas source ( 22 ) located on or in the surface ( 20 ) and the method comprising the step of repeatedly operating the gas source ( 22 ) thereby to eject a flow of gas into an airflow passing over the surface ( 20 ). Effective control of the frequency at which the gas source ( 22 ) is operated has been found to reduce pressures on the surface ( 20 ) caused by vortex bursting. The present invention also provides a synthetic jet actuator ( 22 ) and an aerodynamic or hydrodynamic surface ( 20 ) comprising a plurality of such discrete synthetic jet actuators ( 22 ). |
