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Mean flow information


In fluid dynamics, the fluid flow is often decomposed into a mean flow and deviations from the mean. The averaging can be done either in space or in time, or by ensemble averaging.

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Mean flow

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In fluid dynamics, the fluid flow is often decomposed into a mean flow and deviations from the mean. The averaging can be done either in space or in time...

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Mean curvature flow

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field of differential geometry in mathematics, mean curvature flow is an example of a geometric flow of hypersurfaces in a Riemannian manifold (for example...

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Fundamental diagram of traffic flow

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macroscopic fundamental diagram (MFD) is type of traffic flow fundamental diagram that relates space-mean flow, density and speed of an entire network with n number...

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Turbulence

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turbulence or turbulent flow is fluid motion characterized by chaotic changes in pressure and flow velocity. It is in contrast to a laminar flow, which occurs when...

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Urban canyon

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locations. When the mean wind direction is perpendicular to the street, the vortex flow formed inside the canyon acts to confine air flow, reduce dispersion...

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Turbulence modeling

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a mean part and a fluctuating part. Averaging the equations gives the Reynolds-averaged Navier–Stokes (RANS) equations, which govern the mean flow. However...

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Gravity wave

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effects cause the waves to break, transferring their momentum to the mean flow. This transfer of momentum is responsible for the forcing of the many...

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Inverse mean curvature flow

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differential geometry and geometric analysis, inverse mean curvature flow (IMCF) is a geometric flow of submanifolds of a Riemannian or pseudo-Riemannian...

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Turbulence kinetic energy

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turbulence kinetic energy (TKE) is the mean kinetic energy per unit mass associated with eddies in turbulent flow. Physically, the turbulence kinetic energy...

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Red River of the South

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River. The total length of the river is 1,360 miles (2,190 km), with a mean flow of over 57,000 cubic feet per second (1,600 m3/s) at the mouth.[citation...

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Radiation stress

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by the presence of the surface gravity waves, which is exerted on the mean flow. The radiation stresses behave as a second-order tensor. The radiation...

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Airy wave theory

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layer. The theory assumes that the fluid layer has a uniform mean depth, and that the fluid flow is inviscid, incompressible and irrotational. This theory...

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Root mean square deviation

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design of flow and thermal equipment and processes. Root mean square Mean absolute error Average absolute deviation Mean signed deviation Mean squared deviation...

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Generalized Lagrangian mean

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for the flow field, but appointed to fixed Eulerian coordinates. In general, it is difficult to decompose a combined wave–mean motion into a mean and a...

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Traffic flow

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statistical methods of examination, such as space mean speed, time mean speed, and “the effect of increase of flow on overtaking” and the resulting decrease in...

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Mammoth Spring

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pool that drains over a high stone dam. The spring generates a harmonic mean flow of about 9 m³/s (322 cubic feet per second). The water emerges at a constant...

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Rossby wave

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planetary wave resonance and extreme weather events. To start with, a zonal mean flow, U, can be considered to be perturbed where U is constant in time and...

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Longest rivers of the United Kingdom

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Yorkshire Ouse. The figures for mean flow are derived from those offered up by the National River Flow Archive, in particular the flow measured at the lowermost...

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Atmospheric waveguide

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wave parameters such as group velocity or vertical wavenumber depend on mean flow direction and strength. Thus, for instance, westerlies might be a good...

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Nonlinear tides

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topography, such as intertidal area and flow curvature can induce specific kinds of nonlinearity. Furthermore, mean flow, e.g. by river discharge, may alter...

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