..., Keio University, Japan, now at MHI 2Department of Mechanical Engineering, Keio University, Japan ABSTRACT In disk drive systems, flow-induced vibration, often attributed to turbulent fluid motion, presents a significant challenge due to its wide-ranging frequency spectra. Helium-filled enclosures have...

... wind shear pressure load wind power turbulence Abstract Experimental investigations and field tests of wind shear from passing a vehicle have been performed. The goal of the investigation was to experimentally assess wind energy potential from passing vehicles on freeways and highways...

... combustion and reactive flows computational fluid dynamics turbulence Abstract We investigate the kinetic energy flux across different spatial scales for a premixed flame in a realistic configuration. We use PeleC, a fully-compressible reacting flow code with adaptive mesh refinement...

..., vortex shedding, compressible flow, acoustics, cavity transition, juts, turbulence, computational aeroacoustics, cavity flow, shear layer, cavity flow control, passive flow control FIGURE 1: FLOW CONTROL JUTS VISUALIZATION NOMENCLATURE Depth of the cavity Length of the cavity Mach number Freestream...

... turbulence Abstract Resolvent analysis is utilized to model the temporal mean of experimental measurements of a turbulent boundary layer over streamwise aligned, spanwise alternating rough surfaces, where large counter-rotating rolls are observed. Without detailed knowledge...

... and the associated costs (capital and operating costs) accurately. This study reviews different empirical correlations and turbulence modelling approaches for pressure drop prediction. Flow through packed beds relies on properties such as flow velocity, orientation, particle packing density, and particle shape. Most...

...Proceedings of the ASME 2023 International Mechanical Engineering Congress and Exposition IMECE2023 October 29-November 2, 2023, New Orleans, Louisiana IMECE2023-115131 IMPROVEMENT OF STANDARD K-EPSILON TURBULENCE MODEL FOR ROUND FREE JETS BY ADJUSTING CLOSURE COEFFICIENTS Cem Turutoglu, Sertac...

... and Reynolds numbers. This new metric may provide a way of assessing the roughness of an internal flow through non-invasive means. Keywords: Fluid Dynamics, Turbulence, Acoustics, 3-D Printing, Bio-Inspired NOMENCLATURE Roman letters Bispectrum [V3 s2] Bicoherence [unitless] Hydraulic Diameter [m] Frequency...

... with increasing restriction. The bicoherence indicates phase coupling decreases with increasing restriction, providing another quantitative measure of restriction intensity. fluid dynamics turbulence acoustics 3-D printing bio-inspired Proceedings of the ASME 2023 International Mechanical Engineering...

.... aerospace systems experimentation wind tunnel turbulence unsteady flows particles Proceedings of the ASME 2023 International Mechanical Engineering Congress and Exposition IMECE2023 October 29-November 2, 2023, New Orleans, Louisiana IMECE2023-111752 DEVELOPMENT AND AERODYNAMIC PERFORMANCE...

... Abstract Wind turbines deployed in utility scale wind farms can help to meet future energy demands and reduce carbon dioxide emissions by reducing energy needs from fossil fuels. Wind turbines, however, produce downstream wakes and turbulence. In wind farms such turbulence can negatively impact...

... , where freestream turbulence ( fst ) is 1.2%. A protuberance of height, k = 3 mm is placed at an angle of 60 from the theoretical stagnation point. The characteristic Re based on the diameter of the element and freestream velocity is 1442. The protuberance sheds streamwise vortices leading...

...– 80 Hz band, show significantly increased overall energy in these model cases. While all restricted cases demonstrate a nominal amount of increased energy, there appears to be more significant changes when the narrowing exceeds an area reduction of 40%. turbulence fluid dynamics bio-inspired...

... Abstract The supersonic mixing flow field of a Helium jet in cross-stream air is numerically simulated in the present study by solving the two-dimensional Reynolds-Averaged Navier-Stokes equations. Turbulence contribution is obtained from the Realizable k-ε and the SST k-ω model. Each model...

... Abstract The self-preserving properties of round nonbuoyant turbulent starting jets, puffs and interrupted jets were studied experimentally and theoretically for flows in still and unstratified environments. The experiments involved dye-containing fresh water sources injected into still fresh...

... Abstract Wind turbines can create turbulence and downstream wakes which can introduce generation losses of downstream impacted turbines. These downstream turbine-induced losses are due to two different conditions. The first is from power-producing rotating blades of upstream wind turbines...

... Abstract This paper describes preliminary experiments carried in a wind tunnel to study the effect of different turbulence intensities (nominally Tu = 0.6, 0.8 and 1.0%) on the dynamics of a flexible silicone filament (length to diameter ratio L/D = 83) hanging in crossflow in the range...

... separation vortex and the trailing vortex of downstream lead to a large gas pulsation which makes noise radiation enhanced in the compressor pipe flow field in screw compressor exhausting orifice. Combination turbulence and vortex-pair phenomena in coherent structures, based on the vortex sound equation...

... Paper deals with the effect of turbulence on steady state performance characteristics of an eccentrically loaded 120° single pad externally adjustable fluid film bearing. The bearing has an aspect ratio of one and operates over a wide range of eccentricity ratios and adjustments. Two load-offset...

... 07 07 2010 The use of numerical approach to support design and product development on industrial applications is nowadays quite widespread. Many industrial applications involve turbulent fluid flows, whose modeling still represents the bottleneck for a wider usage of numerical methods...