1-19 of 19
Keywords: vortex
Close
Sort by
Proceedings Papers

Proc. ASME. FEDSM2022, Volume 1: Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC), V001T03A020, August 3–5, 2022
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-87552
... of the cutback cooling unit. The results show that the elliptic and whisker lip can significantly improve film cooling effectiveness. In particular, whisker Case-3 can achieve the best results at the medium blowing ratio. The analysis shows that the whiskered lip structure weakens the strength of the vortex shed...
Proceedings Papers

Proc. ASME. FEDSM2022, Volume 1: Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC), V001T02A007, August 3–5, 2022
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-87569
... for the appearance of instabilities, but also the vortex structure of vortices. It can have a stabilizing effect for a regime flow and a destabilizing effect for another, i.e., the transition to Taylor vortices occurred at higher or lower Taylor numbers. In such destabilizing cases, the vortices are either folded...
Proceedings Papers

Proc. ASME. FEDSM2022, Volume 1: Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC), V001T03A013, August 3–5, 2022
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-87002
... forces acting on the airfoil. However, the flow fields formed by the interaction between the sweeping jet and the main flow and their flow mechanisms are poorly understood. In particular, the vortex structure and flow mechanism formed by the interaction with respect to the velocity ratio between...
Proceedings Papers

Proc. ASME. FEDSM2022, Volume 2: Multiphase Flow (MFTC); Computational Fluid Dynamics (CFDTC); Micro and Nano Fluid Dynamics (MNFDTC), V002T05A001, August 3–5, 2022
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2022-79617
... Abstract The vortex structure generated by a single jet emit into the main flow is known as a jet in cross flow and is a fundamental phenomenon that has been reported in many studies. On the other hand, high-velocity, oscillating, sweeping jets are also attracting attention...
Proceedings Papers

Proc. ASME. FEDSM2021, Volume 3: Fluid Mechanics; Micro and Nano Fluid Dynamics; Multiphase Flow, V003T05A033, August 10–12, 2021
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2021-66012
... Abstract Liutex is a vortex identification method that provides a vector interpretation of local fluid rotation. Liutex produces a vector quantity which can be used to determine the absolute and relative strength of a vortex, the local rotation axis of a vortex, the vortex core center, the size...
Proceedings Papers

Proc. ASME. FEDSM2021, Volume 3: Fluid Mechanics; Micro and Nano Fluid Dynamics; Multiphase Flow, V003T05A031, August 10–12, 2021
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2021-65513
... Abstract The flow field around moving airfoils capable of flexible elastic deformation has become a focus of attention. These flow fields may be understood as a fluid-structure interaction (FSI) problem, and the motion and deformation of elastic airfoils, as well as the associated vortex flow...
Proceedings Papers

Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D, 321-329, July 24–29, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJK2011-06062
... of the three-dimensional steady numerical simulation, the distributions of velocity field in the impeller are obtained at the five different operating conditions. The analysis of the numerical simulation results shows that there is an obvious vortex in the impeller passage at off-design conditions...
Proceedings Papers

Proc. ASME. FEDSM2010, ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting: Volume 1, Symposia – Parts A, B, and C, 481-487, August 1–5, 2010
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM-ICNMM2010-30058
... successfully used to a large pumping station. Forebay Pumping station Flow pattern Numeric simulation vortex STUDY ON IMPROVING THE FLOW IN FOREBAY OF THE PUMPING STATION Chao Liu, Jiren Zhou, Li Cheng, Yan Jin College of Hydraulic Engineering, Yangzhou University 131 Jiangyang Middle Road...
Proceedings Papers

Proc. ASME. FEDSM2009, Volume 1: Symposia, Parts A, B and C, 1399-1407, August 2–6, 2009
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2009-78272
...). Keywords: Bluff bodies, Wake, Vortex, Pressure distribution, Velocity and CFD Analysis INTRODUCTION Bluff bodies are objects in which the length along their stream is equal or near the length perpendicular to the stream. Hence, a unique characteristic of bluff bodies is that, the skin friction drag is much...
Proceedings Papers

Proc. ASME. FEDSM2009, Volume 1: Symposia, Parts A, B and C, 2163-2174, August 2–6, 2009
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2009-78294
... 30 07 2010 This study presents the numerical simulation of flow development around NACA-2412 airfoil which utilized the backward facing step to explore the possibility of enhancing airfoil aerodynamic performance by trapped vortex lift augmentation. This article concentrate...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 2: Fora, Parts A and B, 947-955, July 30–August 2, 2007
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2007-37509
... 26 03 2009 Vortex in pump station sumps could lead to equipment operation with vibration and cavitations, and its impact is even stronger in large scale pump station sumps. In this study, the flow structure and vortex behavior in the sumps of a large scale pump station were...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 359-367, July 30–August 2, 2007
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2007-37379
... Three devices for treating contaminated water using a cavitating vortex have been developed and tested. The first device uses stationary twin volute casings to generate cavitating vortices. Observation of the collisions among the opposing counter-rotating vortices revealed that their end...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 2: Fora, Parts A and B, 1151-1155, July 30–August 2, 2007
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2007-37536
..., are discussed. Third, spanwise velocity fluctuation and sound pressure level on the wall are discussed. bump vortex acoustics high-order computation Proceedings of FEDSM2007 5th Joint ASME/JSME Fluids Engineering Conference 1 Copyright © 2007 by ASME dimensional bump are studied. In this search...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 1679-1687, July 30–August 2, 2007
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2007-37210
... on Oscillation Mode of Underexpanded Impinging Jet and Behaviour of Plate Shock Wave . Transactions of the Japan Society for Aeronautical and Space Sciences, Vol. 43, pp. 137-142. 9 Compressible Flow Impinging Jet Oscillation Vortex Visualization Numerical Simulation This paper presents a movement...
Proceedings Papers

Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 1171-1178, July 30–August 2, 2007
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2007-37222
... 26 03 2009 The unsteady flow at low Reynolds number regions has been attracted significant attentions in recent years. However, detailed vortex flow structures and characteristics of dynamic forces acting on an unsteady airfoil at a low Reynolds number region have not been clarified...
Topics: Airfoils, Thrust
Proceedings Papers

Proc. ASME. FEDSM2002, Volume 1: Fora, Parts A and B, 1143-1149, July 14–18, 2002
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2002-31344
... three-dimensional effects, and to broaden the spectrum around the shedding frequency. The airfoil leading edge is the dominant acoustic source region. Post-processing tools combining Proper Orthogonal Decomposition and new vortex identification algorithms are applied to PIV measurements in order...
Proceedings Papers

Proc. ASME. FEDSM2005, Volume 1: Symposia, Parts A and B, 475-480, June 19–23, 2005
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2005-77176
... 14 10 2008 Vortex-induced vibration (VIV) tests have been performed on long, flexible pipes with various levels of roughness, in sheared flows in a circular towing tank at high Reynolds numbers. The test pipes, made of fiberglass composite, were mounted horizontally beneath a rotating...
Proceedings Papers

Proc. ASME. FEDSM2005, Volume 2: Fora, 145-153, June 19–23, 2005
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2005-77220
...-mail : nonomura@flab.eng.isas.jaxa.jp) Kozo Japan Aerospace E Institute of Space and A Department of Space Tra 3-1-1 Yoshinodai, Sagamihara Keywords jet, vortex, acous ABSTRACT Flow fields of two dimensional jets impinging on the sharp edge are computationally simulated and the effect of various parameters...
Proceedings Papers

Proc. ASME. FEDSM2006, Volume 2: Fora, 737-742, July 17–20, 2006
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2006-98487
... Airfoil Wake Vortex Thrust Visualization PIV The detailed vortex flow structure behind a combination airfoil at a low Reynolds number region was measured by PIV. Moreover, the dynamic thrust acting on a combination airfoil was measured by a six-axes sensor in water tunnel...