Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"pulsed jets"”.
-
Parallel pulsed jets for precise underwater propulsion
… nature's swimmers, applying the principles of pulsed jet propulsion to robotic thrusters. Although most developments have focused on single jet actuators, nature provides some indications that multi-jet systems can provide propulsive benefits -- marine invertebrates called sales connect into …
-
Study of Steady and Pulsating Impinging Jets
… on the fluid mechanics of steady and pulsed impinging jets is presented in this thesis. An experimental facility was custom-builtin order to generate axisymmetric and incompressible impinging jets (pulsed and steady). In order to ensure that the velocity profiles at the exit were fully …
-
Phase Locked Flow Measurements of Steady and Unsteady Vortex Generator Jets in a Separating Boundary Layer
<p>Vortex generator jets (VGJs) have been found to be an effective method of active separation control on the suction side of a low pressure turbine (LPT) blade at low Reynolds numbers. The flow mechanisms responsible for this control were studied and documented in order to provide a basis for …
-
Reaction Control Jet Actuators for Air-Breathing Hypersonic Vehicles
… high frequency actuators. Reaction control (RC) jets are an attractive solution, as they are commonly used to supplement aerodynamic control surfaces for exo-atmospheric control of hypersonic vehicles, and can operate at high frequency. If RC jets are operated within the atmosphere, an …
-
Numerical methods for the unsteady incompressible Navier-Stokes equations and their application to the Direct Numerical Simulation of turbulent flows
… for this particular type of flow. A DNS of a pulsed jet is performed to analyze the effect of external pulsing on the flow structures and the resulting mixing of the jet with the crossflow. As the problem is inherently unsteady, the key to the successful prediction of such flows is the ability …