Numerical Simulation of Glow Discharges for High-Speed Flow Control

2004 ◽  
Author(s):  
Jonathan Poggie
Keyword(s):  
Numerical Simulation ◽  
Flow Control ◽  
High Speed ◽  
High Speed Flow ◽  
Glow Discharges ◽  
Speed Flow

Numerical Simulation of Non-Equilibrium Plasma Discharge for High Speed Flow Control

2016 ◽  
Vol 98 (3) ◽  
pp. 285-293 ◽  
Author(s):  
Ramakrishnan Balasubramanian ◽  
Karupannasamy Anandhanarayanan ◽  
Rajah Krishnamurthy ◽  
Debasis Chakraborty
Keyword(s):  
Numerical Simulation ◽  
Flow Control ◽  
High Speed ◽  
Plasma Discharge ◽  
High Speed Flow ◽  
Equilibrium Plasma ◽  
Speed Flow ◽  
Non Equilibrium

scholarly journals Plasma Synthetic Jet Actuators for Active Flow Control

Actuators ◽  
2018 ◽  
Vol 7 (4) ◽  
pp. 77 ◽  
Author(s):  
Haohua Zong ◽  
Matteo Chiatto ◽  
Marios Kotsonis ◽  
Luigi de Luca
Keyword(s):  
Flow Control ◽  
High Speed ◽  
High Reynolds Number ◽  
Mechanical Efficiency ◽  
Synthetic Jet ◽  
High Speed Flow ◽  
Speed Flow ◽  
Jet Actuators ◽  
Characterization Studies ◽  
High Reynolds

The plasma synthetic jet actuator (PSJA), also named as sparkjet actuator, is a special type of zero-net mass flux actuator, driven thermodynamically by pulsed arc/spark discharge. Compared to widely investigated mechanical synthetic jet actuators driven by vibrating diaphragms or oscillating pistons, PSJAs exhibit the unique capability of producing high-velocity (>300 m/s) pulsed jets at high frequency (>5 kHz), thus tailored for high-Reynolds-number high-speed flow control in aerospace engineering. This paper reviews the development of PSJA in the last 15 years, covering the major achievements in the actuator working physics (i.e., characterization in quiescent air) as well as flow control applications (i.e., interaction with external crossflow). Based on the extensive non-dimensional laws obtained in characterization studies, it becomes feasible to design an actuator under several performance constraints, based on first-principles. The peak jet velocity produced by this type of actuator scales approximately with the cubic root of the non-dimensional energy deposition, and the scaling factor is determined by the electro-mechanical efficiency of the actuator (O(0.1%–1%)). To boost the electro-mechanical efficiency, the energy losses in the gas heating phase and thermodynamic cycle process should be minimized by careful design of the discharge circuitry as well as the actuator geometry. Moreover, the limit working frequency of the actuator is set by the Helmholtz natural resonance frequency of the actuator cavity, which can be tuned by the cavity volume, exit orifice area and exit nozzle length. In contrast to the fruitful characterization studies, the application studies of PSJAs have progressed relatively slower, not only due to the inherent difficulties of performing advanced numerical simulations/measurements in high-Reynolds-number high-speed flow, but also related to the complexity of designing a reliable discharge circuit that can feed multiple actuators at high repetition rate. Notwithstanding these limitations, results from existing investigations are already sufficient to demonstrate the authority of plasma synthetic jets in shock wave boundary layer interaction control, jet noise mitigation and airfoil trailing-edge flow separation.

High-Speed Flow Control with Electrical Discharges

2011 ◽  
Author(s):  
Jonathan Poggie ◽  
Nicholas Bisek ◽  
Igor Adamovich ◽  
Munetake Nishihara
Keyword(s):  
Flow Control ◽  
High Speed ◽  
Electrical Discharges ◽  
High Speed Flow ◽  
Speed Flow

scholarly journals Features of high-speed aircraft numerical simulation

2020 ◽  
Author(s):  
M.M. Alekseeva ◽  
N.A. Brykov ◽  
I.A. Vikhrova
Keyword(s):  
Numerical Simulation ◽  
Gas Dynamics ◽  
High Speed ◽  
Simulation Method ◽  
High Speed Flow ◽  
Flight Tests ◽  
High Speeds ◽  
Physical Experiments ◽  
Speed Flow ◽  
Flow Around A Body

Currently, the creation of new high-speed aircraft is of great interest. The development of such aircraft is associated with the need for experiments and flight tests. The organization of real physical experiments in the field of high speeds is fraught with significant difficulties that can be solved using the numerical simulation method, which makes it possible to significantly simplify the process of creating new products. When developing a high-speed aircraft, it is necessary to take into account the specific aerodynamic and thermophysical features of the processes occurring on the surface of the aircraft and in the shock layer. In this paper, the features of the processes at high speeds are considered on the example of solving the external and internal problems of the gas dynamics of an aircraft. Based on the specifics of these processes, we built a mathematical model that allows us to study the aerodynamics of a high-speed flow around a body in dense layers of the atmosphere and the processes that occur in the combustion chamber.

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