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
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
Numerical study on the internal flow field of a reversible turbine during continuous guide vane closing [PDF]
, 2017 The unsteady flow field in a reversible pump-turbine is investigated during the continuous load rejection using a 3D computational fluid dynamic analysis.
Benini, Ernesto +3 more
core +1 more source
Rotor wake interactions with an obstacle on the ground [PDF]
, 2018 An investigation of the flow around an obstacle positioned within the wake of a rotor is described. A flow visualisation survey was performed using a smoke wand and particle image velocimetry, and surface pressure measurements on the obstacle were taken.
Giuni, M., Green, R.B., Pickles, D.J.
core +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
Numerical Study of Pressure Fluctuation and Unsteady Flow in a Centrifugal Pump
Processes, 2019 A pump is one of the most important machines in the processes and flow systems. The operation of multistage centrifugal pumps could generate pressure fluctuations and instabilities that may be detrimental to the performance and integrity of the pump.
L. Bai +4 more
semanticscholar +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
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