Plasma synthetic jet actuators for active flow control

In the last few decades, active flow control (AFC) technology has been developed to minimize the aerodynamic drag of transportation vehicles and maximize the propulsion efficiency of thermodynamic engines. The key of this technology is the actuators. Among all the actuators that have been proposed (i.e. fluidic, moving object, or plasma-based),...

Experimental Investigation on Frequency Characteristics of Plasma Synthetic Jets

The performance of a two–electrode plasma synthetic jet actuator (PSJA) is investigated for a wide range of dimensionless actuation frequencies (f*) using high-speed phase-locked Particle Imaging Velocimetry (PIV) measurements. The jet-induced velocity fields in the axisymmetric plane are measured during both...

Numerical Simulations of NS-DBD Plasma Actuators For Flow Control

Nanosecond dielectric barrier discharge (NS-DBD) plasma actuators is relatively<br/>new means of flow control. It has several advantages compared to more conventional<br/>means of flow control, such as small size, low weight, fast response time<br/>and controllability. It has been demonstrated to be able to promote transition of<br/>boundary...

Characterisation of plasma synthetic jet actuators in quiescent flow

An experimental characterisation study of a large-volume three-electrode plasma synthetic jet actuator (PSJA) is presented. A sequential discharge power supply system is used to activate the PSJA. Phase-locked planar particle image velocimetry (PIV) and time-resolved Schlieren imaging are used to characterise the evolution of the induced flow...

Electro-mechanical efficiency of plasma synthetic jet actuator driven by capacitive discharge

A simplified model is established to estimate the jet exit density variation of a plasma synthetic jet actuator (PSJA) driven by a capacitive arc discharge. This model, in conjunction with phase-locked planar particle imaging velocimetry (PIV) measurements, enables the calculation of jet mechanical energy for different operating conditions....

Molecular dynamics simulations of ballistic He penetration into W fuzz

Results are presented of large-scale Molecular Dynamics simulations of low-energy He bombardment of W nanorods, or so-called 'fuzz' structures. The goal of these simulations is to see if ballistic He penetration through W fuzz offers a more realistic scenario for how He moves through fuzz layers than He diffusion through fuzz nanorods....

Process Intensification in Crystallization: Submicron Particle Generation Using Alternative Energy Forms

Crystallization is one of the oldest separation and product formation techniques that continues to be in use today. Despite its long history, it only started to develop significantly in the past few decades. In this thesis, the application of Process Intensification in crystallization is investigated. Process Intensification is a set of often...

Eindrapportage van het onderzoek "Diagnosesysteem plasma-machine"