Results 31 to 40 of about 9,236,417 (302)

Effects of Simultaneous Suction and Blowing over an Airfoil on Flow Behavior and Aerodynamic Coefficients [PDF]

Iranica Journal of Energy and Environment, 2022
In this study, the simultaneous effect of suction and blowing on the boundary layer and the effect of control parameters on the flow separation from a NACA 0012 airfoil is numerically analyzed.
S. Abbasi, S. Esmailzadeh Vali
doaj   +1 more source

Multi-Session Separation of Duties (MSoD) for RBAC [PDF]

, 2007
Separation of duties (SoD) is a key security requirement for many business and information systems. Role Based Access Controls (RBAC) is a relatively new paradigm for protecting information systems. In the ANSI standard RBAC model both static and dynamic
Laborde, Romain, Xu, Wensheng, Wensheng Xu, Nasser, Bassem, Bassem Nasser, David W Chadwick, Sassa Otenko, Romain Laborde, Otenko, Sassa, Chadwick, David W.   +9 more
core   +1 more source

Study of Separation Control of Vortex Generators on Transonic Wings

Journal of Fluid Science and Technology, 2011
Flows around vortex generators (VGs), which serve as one of the important flow control methods, are investigated by solving Reynolds-Averaged Navier-Stokes (RANS) equations. The influences on the main flow of VGs are intended to explore.
Jingbo HUANG, Song FU, Zhixiang XIAO, Miao ZHANG   +3 more
doaj   +1 more source

Control of shock-induced boundary layer separation at supersonic speeds [PDF]

, 2007
PhDThe results of a systematic experimental investigation into the effects that Sub- Boundary Layer Vortex Generators (SBVGs) have on reducing normal shock-induced turbulent boundary layer separation are presented.
Cohen, Giel S, Cohen, Giel S.
core   +1 more source

Separation principle for networked control systems with multiple-packet transmission

, 2011
The authors investigate a class of observer-based discrete-time networked control systems (NCSs) with multiple-packet transmission where random packet dropouts occur independently in both the sensor-to-controller (S/C) and controller-to-actuator (C/A ...
Wu, Jun, Chen, Sheng, Wu, Dongxiao
core   +2 more sources

Airborne Separation Assurance Systems: towards a work programme to prove safety [PDF]

, 2004
With Full Delegation Airborne Separation Assurance System (ASAS), separation control would be delegated to the (properly equipped) aircraft, i.e. aircraft pilots are responsible for aircraft separation.
Peter Brooker, Brooker, Peter
core   +1 more source

Structural Manipulation of 3D Graphene-Based Macrostructures for Water Purification

Gels, 2022
The rapid development of graphene-based nanotechnologies in recent years has drawn extensive attention in environmental applications, especially for water treatment.
Zijun Yu, Li Wei, Lun Lu, Yi Shen, Yang Zhang, Jun Wang, Xiaoyao Tan   +6 more
doaj   +1 more source

Optimal output-feedback control and separation principle for Markov jump linear systems modeling wireless networked control scenarios

, 2021
The communication channels used to convey information between the components of wireless networked control systems (WNCSs) are subject to packet losses due to time-varying fading and interference.
Pepe P., D'Innocenzo A., Impicciatore A., Lun Y. Z.   +3 more
core   +1 more source

Numerical Investigation of Stage Separation Control of Tandem Hypersonic Vehicles Based on Lateral Jet

Aerospace
The stage separation of hypersonic vehicles is critically challenged by severe aerodynamic interference, which induces significant attitude deviations and jeopardizes subsequent flight missions.
Wenhua Guo, Jiawei Fu, Pengzhen He, Shuling Tian   +3 more
doaj   +1 more source

Extremum Seeking Adaptive Separation Control on a Wing with Plasma Synthetic Jet Actuator

Journal of Fluid Science and Technology, 2012
Plasma synthetic jet actuator (PSJA) is a flow control device which has structure that insulator is tucked with electrode pair. It generates electrohydrodynamic (EHD) effect and induces a flow.
Kakuji OGAWARA, Ryota KOJIMA, Shoji MATSUMOTO, Hidenori SHINGIN   +3 more
doaj   +1 more source