| 词汇 | advection |
| 释义 | advection noun[ U ] physics specializeduk /ədˈvek.ʃən/ us /ədˈvek.ʃən/ the transport of a substance or of heat by the flow of a liquid: （液体流动引起的物质或热量的）移流 Transport of pollutants in a river by bulk water flow downstream is an example of advection.河流中大量的水将污染物质带到下游便是一个移流的例子。 This movement can be viewed as the advection of fluid across a coordinate surface. In oceanography, advection often refers to the horizontal transport of the heat, humidity or salinity of the ocean. In this model, moisture transport is accomplished through advection. A light breeze favours advection fog more than a stiff breeze. Physical & chemical processes absorbable absorptive absorptive capacity absorptivity acidification endothermic reaction excitation excite exergonic exothermic exothermic reaction fermentation impregnate reabsorb react reboil recondense redox scald vaporize Examples of advectionadvection Constructing a multi-dimensional oscillation preventing scheme for the advection equation by a rational function. The fundamental physical idea is that of a balance of vorticity brought into the jet by advection and diffused by friction. Another desirable property of an advection scheme is the synchronous transport of fluid and tracers. In this equation the nonlinear terms on the left side represent an advection of the quantity u with advective velocity (u, v, w). This formulation facilitates the usage of (nearly) nonoscillatory advection schemes for solving these equations numerically. After the numerical advection step based on (4.2) and (4.3), we need to review the segment structure. At the outer edges of the plume, however, the production and destruction terms rapidly approach zero and advection and transport balance each other. However, in interpreting the results of chaotic advection, it must be recognized that solutes diffuse and solid particles move relative to the fluid locally. Corresponding transverse variation is induced in the downstream periphery; however, it displays significantly greater axial advection due to the greater flow speed there. In this paper we investigate the spectral and evolutionary properties of relatively simple, linear, advection-diffusion equations. However, contours of their sum, plotted in figure 23, have been drawn from the negative of the sum of the production and advection terms. In computing the response function, we want to capture the deformation of the fluid eddies while excluding the simple advection due to a large-scale flow. Advection-diffusion equations occur in a wide variety of fields in many contexts of active and passive transport in fluids and plasmas. It follows that chaotic advection for irrotational flows without circulation is possible only for two- or three-dimensional unsteady flows. The important feature which leads to chaotic advection is the breaking of heteroclinic orbits. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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