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Journal Articles
Publisher: ASME
Article Type: Review Articles
J. Fluids Eng. September 2024, 146(9): 090801.
Paper No: FE-23-1438
Published Online: April 12, 2024
..., brakes, and control mechanisms, and (f) lower levels of noise. Based on the types of torque-generating fluid dynamic forces, the VATs are usually categorized into (i) lift-based and (ii) drag-based turbines. In the first category, Darrieus turbine is the most prevalent one. Since its...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. October 2022, 144(10): 101207.
Paper No: FE-22-1102
Published Online: May 19, 2022
...Puxuan Li; Matthew Campbell; Ning Zhang; Steve J. Eckels This study proposes a numerical model to collect and analyze relationships between flow structures and drag forces on a microfin enhanced surface. We utilized a large eddy simulation (LES) with a localized, dynamic kinetic energy, subgrid...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. June 2022, 144(6): 061113.
Paper No: FE-21-1455
Published Online: April 5, 2022
... and drag are compared with the results on the flat substrate. Enhanced drag and significantly enhanced lift are observed as the test particle is situated near the summit of the hill. drag lift aerosolization dustiness computational fluid dynamics National Institute for Occupational Safety...
Includes: Supplementary data
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021105.
Paper No: FE-18-1156
Published Online: August 16, 2018
... Aerodynamics Compressible flows Drag Free shear layers Gas dynamics Supersonic flows Transonic flows Unsteady flows Wakes Base and afterbody flow constitute an important class of separated flows that govern the performance and stability of an aerospace vehicle. Investigations into the base...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2019, 141(2): 021102.
Paper No: FE-17-1726
Published Online: June 29, 2018
... lock-in error as the difference between Triantafyllou's fish Strouhal number and the tangent of the vortex-shedding angle, an experiment is discussed for measuring the minimum drag of live fish. Contributed by the Fluids Engineering Division of ASME for publication in the J OURNAL OF F LUIDS E...
Journal Articles
Publisher: ASME
Article Type: Review Articles
J. Fluids Eng. February 2019, 141(2): 020801.
Paper No: FE-17-1623
Published Online: June 29, 2018
... investigated in CFD was not optimized, downforce and drag were slightly increased from those of the plane-surface diffuser by 1% and 0.4%, respectively due to the pressure–velocity behavior of the curved section. Fig. 29 Midplane time-averaged streamwise velocity ( u ) profiles within the sub...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. January 2019, 141(1): 011103.
Paper No: FE-18-1056
Published Online: June 27, 2018
... analysis are also carried out for the pitching blade. The performance of the investigated turbulence models is evaluated at various critical points on the hysterias loop of lift and drag coefficients. The predictions of the investigated turbulence models are in good agreement at lower angle of attack, i.e...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. December 2018, 140(12): 121202.
Paper No: FE-17-1634
Published Online: June 26, 2018
... Drag Lift Unsteady flows Wakes Flow past rotating cylinders is one of the widely studied problems in fluid dynamics. It gives valuable insights into the flow control aspects of bluff body flows. Some researchers have used rotating cylinders as lifting surfaces by utilizing the magnus effect...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. December 2018, 140(12): 121101.
Paper No: FE-17-1509
Published Online: June 13, 2018
... configuration is actuated by means of a synthetic jet boundary condition. Overall, the effect of the actuation is beneficial. The actuation of the AFC decreases drag, stabilizes the flow, and reduces the size of the side recirculation bubble. Fig. 19 Instantaneous streamwise flow velocity: unactuated...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. October 2018, 140(10): 101108.
Paper No: FE-17-1573
Published Online: May 18, 2018
...Upender K. Kaul; Nhan T. Nguyen A Reynolds-averaged Navier–Stokes (RANS) computational study was conducted to investigate the effect of various variable camber continuous trailing edge flap (VCCTEF) configurations on the lift and drag of a NASA generic transport model (GTM) wing section. Out...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. June 2018, 140(6): 061205.
Paper No: FE-17-1104
Published Online: March 27, 2018
... width, ( 19.28 mm ≤ W ≤ 25.75 mm ), and angle of attack, ( 0 deg ≤ ψ ≤ 12.6 deg ). A total of six wheels and five tires were tested. Coefficient of drag area ( C d A ) and coefficient of side force area ( C s A ) versus angle of attack (ψ) were measured using a multi-axis force transducer. Wind tunnel...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. May 2018, 140(5): 051204.
Paper No: FE-17-1437
Published Online: January 24, 2018
...Xin Zhang; Xili Duan; Yuri Muzychka Flow drag reduction induced by chemical additives, more commonly called drag-reducing agents (DRAs), has been studied for many years, but few studies can manifest the mechanism of this phenomenon. In this paper, a new mathematical model is proposed to predict...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. May 2018, 140(5): 051202.
Paper No: FE-17-1103
Published Online: January 9, 2018
... ] was not considered here. A comparison is attempted between the present solution and the numerical solution of Wang and Tong [ 26 ].Their pipe diameter was 0.025 m, but they did not specify the length of the bubble. 17 02 2017 05 11 2017 Bubbly flows Drag Fluid transients Gas-liquid...
Topics: Bubbles, Pipes
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. May 2018, 140(5): 051101.
Paper No: FE-17-1300
Published Online: December 26, 2017
...Michell Luiz Costalonga; Bruno Venturini Loureiro; Edson J. Soares We analyze the use of water solutions of Xanthan Gum (XG) for drag reduction (DR) in annular spaces. We provide a direct quantitative comparison between the DR in an annulus and that in straight tubes. We can fairly compare the data...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. April 2018, 140(4): 041202.
Paper No: FE-17-1283
Published Online: November 17, 2017
... Drag Flows in biological systems Fluid-structure interaction Naval hydrodynamics Turbulence Unsteady flows The world is becoming acoustically noisier. For example, due to the rapid rise in shipping, the low-frequency ambient acoustic noise in the ocean is increasing at an average rate...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. March 2018, 140(3): 031204.
Paper No: FE-17-1224
Published Online: October 19, 2017
.... Assoc. Editor: Daniel Livescu. 12 04 2017 02 09 2017 Complex flows Drag Duct Rotating fluids Channel Pipe flows Ball valve, as a necessary component in the pipeline system, is commonly used to regulate flow rate and flow direction or control the stopping and starting...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. January 2018, 140(1): 011104.
Paper No: FE-17-1171
Published Online: September 20, 2017
... AOA at Re = 4 × 10 4 for U b /U of 0, 2, 4, and 6: ( a ) lift coefficient C L , ( b ) drag coefficient C D , ( c ) lift-to-drag ratio C L /C D , and ( d ) C L max and Stall AOA The control strategy depends on simple boundary layer physics. Usually, due to friction, the flow...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. December 2017, 139(12): 121204.
Paper No: FE-16-1495
Published Online: September 20, 2017
... ] or the Sigal-Danberg [ 7 ] based correlation. A f = forward projected surface area of a single roughness element A s = windward wetted surface area of the element C = a constant in the velocity profile, Eq. (4) C D = form drag coefficient C f = 2 τ w / ρu 2...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. October 2017, 139(10): 101102.
Paper No: FE-16-1437
Published Online: July 19, 2017
... to carry approximately 80% of the total lift load. The top surface caused a pitching moment reversal associated with nonlinearity in the lift curve. c = chord C d = drag coefficient (= d /(0.5 ρU 2 S )) C dmin = minimum drag coefficient C do = drag coefficient...