On the unsteady throttling dynamics and scaling analysis in a typical hypersonic inlet–isolator flow [PDF]
, 2020 The flow field in a two-dimensional three-ramp hypersonic mixed-compression inlet in a freestream Mach number of $M_\infty=5$ is numerically solved to understand the unsteady throttling dynamics.
K. Sekar +3 more
semanticscholar +1 more source
Investigation of thrust vector angle control law based on micro-turbojet engine
AIP Advances, 2022 The fluid thrust vectoring nozzle has a fixed profile, few moving parts, and lightweight structure, providing effective flight control for high maneuvering aircraft. The nonlinear control law of the jet deflection angle is one of the critical problems of
Shaoqing Chi +3 more
doaj +1 more source
An implicit unified gas-kinetic scheme for unsteady flow in all Knudsen regimes [PDF]
Journal of Computational Physics, 2018 The unified gas-kinetic scheme (UGKS) is a direct modeling method for multiple scale transport. Based on the ratio of time step to the particle collision time, the local evolution solution on the mesh size and time step scales is used in the construction
Yajun Zhu, Chengwen Zhong, Kun Xu
semanticscholar +1 more source
The Influence of Gas Models on Numerical Simulations of Cryogenic Flow
Aerospace, 2023 At cryogenic temperatures, gases exhibit significant deviations from ideal behaviour, and the commonly employed gas model may inadequately represent the thermodynamic properties of cryogenic gases, subsequently impacting numerical simulations using ...
Ruifan Hu +3 more
doaj +1 more source
Numerical study of wedge-induced oblique detonations in unsteady flow
Journal of Fluid Mechanics, 2019 Oblique detonation waves (ODWs) have been studied widely to facilitate their employment in hypersonic propulsion, but the effects of continuous unsteady inflow have never been addressed so far.
Pengfei Yang, H. D. Ng, H. Teng
semanticscholar +1 more source
Characteristics of a nanosecond pulsed sliding discharge plasma actuator at low pressure
AIP Advances, 2023 The behavior of a nanosecond pulsed sliding discharge plasma actuator with the ambient pressure from 27 to 101 kPa is experimentally investigated. The electric characteristics, discharge morphologies, and surface temperature distribution of the actuator ...
Qijie Sun +5 more
doaj +1 more source
Study on Characteristics of an AC Sliding Discharge Plasma Actuator Operating at Different Pressures
Actuators, 2023 Dielectric barrier discharge (DBD) has been one of the most promising techniques for flow control, but the practical application needs a large plasma surface.
Qijie Sun +5 more
doaj +1 more source
Experimental Investigation on Jet Vector Deflection Jumping Phenomenon of Coanda Effect Nozzle
Applied Sciences, 2022 The Coanda effect nozzle is a fluid thrust vectoring technology that uses the Coanda effect to control jet vector deflection. The jumping phenomenon often occurs in the process of controlling jet vector deflection.
Shaoqing Chi, Yunsong Gu
doaj +1 more source
Unsteady Flow Physics of Airfoil Dynamic Stall
AIAA Journal, 2019 A series of wind-tunnel experiments was conducted on a dynamically pitching NACA 0012 airfoil in order to understand the unsteady flow physics associated with dynamic stall at a transitional Reynol...
Rohit Gupta, Phillip J. Ansell
semanticscholar +1 more source
Experimental and numerical investigation of flow over spiral grooved cylinders
Advances in Mechanical Engineering, 2022 This study experimentally and numerically investigates the performance of a circular cylinder with a spiral grooved surface in terms of reducing wind drag.
Jun Zhang +4 more
doaj +1 more source