Results 21 to 30 of about 71,521 (262)
Experimental and Numerical Study on the Flow Characteristics of Synthetic Jets
Journal of Fluid Science and Technology, 2011 Over the last decade, several studies have investigated synthetic jets. However, there are still many clarifications needed, including details of the structure and Coanda effect of synthetic jets.
Koichi NISHIBE +4 more
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Dynamic mode decomposition of inertial particle caustics in Taylor–Green flow
Scientific Reports, 2021 Inertial particles advected by a background flow can show complex structures. We consider inertial particles in a 2D Taylor–Green (TG) flow and characterize particle dynamics as a function of the particle’s Stokes number using dynamic mode decomposition (
Omstavan Samant +3 more
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Stokes flow in lid-driven cavity under inclined magnetic field
Archives of Mechanics, 2022 Stokes flow in a lid-driven cavity under the effect of an inclined magnetic field is studied. The radial basis function (RBF) approximation is employed to the magnetohydrodynamic (MHD) equations which include Navier–Stokes equations of fluid dynamics and
M. Gürbüz-Çaldağ, E. Çelik
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Enhancement of heat transfer in a synthetic jet actuated by piston cylinder
Advances in Mechanical Engineering, 2021 Modern electronics demand more powerful cooling systems due to an increase in heat dissipation. The traditional cooling techniques reached their limit and the synthetic jet impingement arises as a promising method for cooling of modern electronic systems.
Arun Jacob, KA Shafi, KE Reby Roy
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A nonperturbative approximation for the moderate Reynolds number Navier–Stokes equations [PDF]
Proceedings of the National Academy of Sciences, 2009 The nonlinearity of the Navier–Stokes equations makes predicting the flow of fluid around rapidly moving small bodies highly resistant to all approaches save careful experiments or brute force computation. Here, we show how a linearization of the Navier–Stokes equations captures the drag-determining features of the flow and allows simplified or ...
Roper, Marcus, Brenner, Michael P.
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Visualization of synthetic jets at higher Stokes numbers [PDF]
EPJ Web of Conferences, 2012 Visualization of synthetic jets at higher Stokes numbers (S = 90 and 127) by the phase-locked smoke-wire technique is presented and discussed. The working fluid is air. The Reynolds numbers are quantified using hot-wire anemometry. Although our method of visualization essentially provides only qualitative results, the present study also demonstrates ...
Trávníček Zdeněk +2 more
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Distribution of Particles and Bubbles in Turbulence at a Small Stokes Number [PDF]
Physical Review Letters, 2012 The inertia of particles driven by the turbulent flow of the surrounding fluid makes them prefer certain regions of the flow. The heavy particles lag behind the flow and tend to accumulate in the regions with less vorticity, while the light particles do the opposite.
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Collision and Coagulation in the Infinite-Stokes-Number Regime [PDF]
Aerosol Science and Technology, 1998 This paper presents a theoretical description of collision and coagulation in the infinite-Stokes-number limit where particle motions are only weakly correlated with the fluid. A methodology for predicting the collision frequency and the particle mean energy is developed based on the assumption of a Maxwellian velocity distribution.
Walter C. Reade, Lance R. Collins
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Convergence of Parareal for the Navier-Stokes Equations Depending on the Reynolds Number [PDF]
, 2014 The paper presents first a linear stability analysis for the time-parallel Parareal method, using an IMEX Euler as coarse and a Runge-Kutta-3 method as fine propagator, confirming that dominant imaginary eigenvalues negatively affect Parareal's convergence.
Johannes Steiner +3 more
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Kolmogorov's dissipation number and the number of degrees of freedom for the 3D Navier–Stokes equations [PDF]
Proceedings of the Royal Society of Edinburgh: Section A Mathematics, 2019 AbstractKolmogorov's theory of turbulence predicts that only wavenumbers below some critical value, called Kolmogorov's dissipation number, are essential to describe the evolution of a three-dimensional (3D) fluid flow. A determining wavenumber, first introduced by Foias and Prodi for the 2D Navier–Stokes equations, is a mathematical analogue of ...
Cheskidov, Alexey, Dai, Mimi
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