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Proceedings Papers

Proc. ASME. FEDSM2022, Volume 1: Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC), V001T03A028, August 3–5, 2022
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-87647
... performance of a simplified geometry such as the Ahmed body can improve the geometric optimization of road vehicles for fuel economy improvement. Therefore, this paper examines the three-dimensional wake dynamics of a 28° slanted Ahmed body and proposes a flow control method for its drag reduction...
Proceedings Papers

Proc. ASME. FEDSM2021, Volume 2: Fluid Applications and Systems; Fluid Measurement and Instrumentation, V002T03A025, August 10–12, 2021
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2021-65115
... of the experimental data, flow visualization, and CFD results focusing especially on the flow features in the vaneless space and at the runner inlet, the onset and development of the flow instabilities were explored. Furthermore, a flow control technology that entailed injecting air and water in the vaneless space...
Proceedings Papers

Proc. ASME. FEDSM2020, Volume 1: Fluid Applications and Systems; Fluid Measurement and Instrumentation, V001T01A040, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20275
...Investigation of the flow instabilities of a low specific speed pump-turbine: Part 2 Flow control with fluid injection Sabri Deniz1, Martin von Burg, Manuel Tiefenthaler Lucerne University of Applied Sciences Horw, 6048 SWITZERLAND ABSTRACT This the second part of a two-part paper focusing...
Proceedings Papers

Proc. ASME. FEDSM2020, Volume 2: Fluid Mechanics; Multiphase Flows, V002T03A020, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20457
.... These conclusions are highly generalizable and represent previously undiscovered universal behavior. biomimicry biomimetics shark skin flow control turbulent boundary layer Couette flow PASSIVE BRISTLING OF SHARK SKIN SCALES AT THE MICRO-LEVEL: A FUNDAMENTAL VISCOUS FLOW STUDY TO UNDERSTAND...
Proceedings Papers

Proc. ASME. FEDSM2020, Volume 2: Fluid Mechanics; Multiphase Flows, V002T03A024, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2020-20317
... and shown to be quite consistent with polymer injection results using the maximum polymer concentration to define the polymer properties. polymer drag reduction turbulent boundary layer flow control polyethylene oxide experimental COMPARISON OF TURBULENT BOUNDARY LAYER PROFILES MODIFIED...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 2: Computational Fluid Dynamics, V002T02A045, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-4724
... Abstract Flow behaviors of a downstream object can be affected significantly by an upstream object in close proximity. This concept is used for flow control in this study to maximize the lift/drag ratio on a NACA0012 airfoil. A cylinder with cross-flow translational motion is placed upstream...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 4: Fluid Measurement and Instrumentation; Micro and Nano Fluid Dynamics, V004T04A006, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-5377
... of the backflow. Additionally, the fluctuation of the jet boundary layer became stronger as the duty ratio was increased. From these factors, it is considered that the backflow by the plasma induced flow effectively works on the diffusion of the jet structure. jet mixing plasma actuator flow control...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 4: Fluid Measurement and Instrumentation; Micro and Nano Fluid Dynamics, V004T04A007, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-4667
... of steady wind with the same mean velocity 7 m/s. wind tunnel flow control natural wind embedded system turbulence wind turbine power coefficient AN EXPERIMENTAL STUDY OF HORIZONTAL AXIS WIND TURBINE PERFORMANCE IN ARTIFICIAL NATURAL WIND BY AN ACTIVE CONTROL MULTI-FAN TURBULENT WIND TUNNEL...
Proceedings Papers

Proc. ASME. AJKFluids2019, Volume 1: Fluid Mechanics, V001T01A005, July 28–August 1, 2019
Publisher: American Society of Mechanical Engineers
Paper No: AJKFluids2019-5121
.... Therefore, novel flow control technology is desired to enable small aerodynamic drag with excellent design. In the present study, a dielectric barrier discharge plasma actuator is installed on a simplified vehicle model with the round-shaped rear end to control the flow around the rear end for drag...
Proceedings Papers

Proc. ASME. FEDSM2012, Volume 1: Symposia, Parts A and B, 909-913, July 8–12, 2012
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2012-72256
... Vertical fence wake Separation bubble Vortex generator jet Flow control The separated shear flows developed from the vertical fence was manipulated by using the vortex generator jets located in front of the fence. The experiments were carried out in a circulating water channel...
Proceedings Papers

Proc. ASME. FEDSM2010, ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C, 1179-1188, August 1–5, 2010
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM-ICNMM2010-30437
... long axial extent. Slender body of revolution High-incidence aerodynamics Asymmetric vortical flow Minute jet Flow control 1 Copyright © ASME 2010 CONTROL OF FLOW ASYMMETRY AROUND SLENDER BODY OF REVOLUTION AT HIGH INCIDENCE WITH MINUTE JETS Xiaorong Guan School of Aerospace, Tsinghua...
Proceedings Papers

Proc. ASME. FEDSM2009, Volume 1: Symposia, Parts A, B and C, 1585-1591, August 2–6, 2009
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2009-78366
.... And the specific jet condition which were effective to reduce the separation bubble behind the fence were found Keywords: Vertical fence wake, Separation bubble, Pulsating jet, Phase-averaged DPIV, Flow control INTRODUCTION Separated shear flows around surface-mounted obstacles have received considerable attention...
Proceedings Papers

Proc. ASME. FEDSM2009, Volume 1: Symposia, Parts A, B and C, 1557-1565, August 2–6, 2009
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2009-78136
... the airfoil at Re( d ) = 500, 800, 1200, and 17,000, and flow visualization at Re( d ) = 2200 indicate that λ z has an average value of 2.2d. An active flow control mechanism based on the three dimensional wake instabilities is proposed, to attenuate the fluctuating aerodynamic forces of the airfoil...
Proceedings Papers

Proc. ASME. FEDSM2008, Volume 1: Symposia, Parts A and B, 493-497, August 10–14, 2008
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2008-55076
... 10 07 2009 The objective of the present research is to study the effectiveness of steady and pulsed vortex generator jets in reducing inlet flow distortion and in improving pressure recovery by effective secondary flow control in uniform inflow Serpentine duct diffuser...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 2: Fora, Parts A and B, 1477-1478, July 30–August 2, 2007
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2007-37700
..., fabricate and test a MEMS shear stress sensor for hypersonic aeropropulsion test and evaluation applications. MEMS Sensor Shear Stress Supersonic Flow Hypersonic Flow High Temperature Propulsion Flow Control Boundary Layer Separation New York City, NY, USA A e c M n c s h a a c h c c w fa...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 2: Fora, Parts A and B, 1347-1352, July 30–August 2, 2007
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2007-37410
... layer oscillation modes and recirculating vortices in the cavity. We also demonstrate that oscillations are suppressed by our control method using moving bottom wall. Cavity Flow Self-sustained Oscillations Incompressible Flow CFD Analysis Flow Control Proceedings of FEDSM2007 5th Joint...
Proceedings Papers

Proc. ASME. HT-FED2004, Volume 4, 891-901, July 11–15, 2004
Publisher: American Society of Mechanical Engineers
Paper No: HT-FED2004-56825
... . synthetic jets crossflow rectangular orifices flow control mixing Proceedings of ASME HTFED04: E Heat Transfer/Fluids Engineering Summer Conference I from the ori Consequently dome meas reference for For AR = 16 velocity defi for AR = 4. dome and th deficit. At low J traces of the Increase...
Topics: Jets, Orifices
Proceedings Papers

Proc. ASME. FEDSM2002, Volume 1: Fora, Parts A and B, 1443-1448, July 14–18, 2002
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2002-31059
... the skin-friction drag when opposition control is carried out with appropriate timing. turbulence boundary layers flow control drag reduction Proceedings of ASME FEDSM'02 2002 ASME Fluids Engineering Division Summer Meeting RB controlled with a relatively simple control scheme. For example...
Proceedings Papers

Proc. ASME. FEDSM2002, Volume 1: Fora, Parts A and B, 1339-1344, July 14–18, 2002
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2002-31041
... acceleration of the flow close to the surface with a relative good efficiency when compared with other actuators. electroaerodynamics flow control flat plate Proceedings of ASME FEDSM 02: FLOW INSTABILITIES AND CONTROL FORUM 2002 Fluids Engineering Division Summer Meeting FLA AT ABSTRACT Th...
Proceedings Papers

Proc. ASME. FEDSM2003, Volume 1: Fora, Parts A, B, C, and D, 2673-2680, July 6–10, 2003
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2003-45230
... n /2. Coaxial Jet Excited Jet Flow Control Phase Difference Flow Visualization Particle Image Velocimetry Proceedings of FEDSMí03 4TH ASME_JSME Joint Fluids Engineering Conference Honolulu, Hawaii, USA, July 6-11, 2003 velocities were performed on a coaxial jet at a Reynolds number...