منابع مشابه
Experimental Investigation of Impinging Axisymmetric Turbulent Fountains
The behaviour of a turbulent, axisymmetric, Boussinesq, vertical fountain that impinges on a horizontal plate a distance H from the fountain source is investigated. Images from Light Induced Fluorescence visualisation of the flow provide a clear picture of the internal structure of the impinging flow. The interaction between the impinging fountain and the plate results in a buoyant radial wall ...
متن کاملGalactic Fountains as Magnetic Pumps
We study a simple, kinematical model of a galactic fountain ow and show that a horizontal eld in the galactic plane can be pumped into the halo to a height of several kiloparsecs. This pumping eeect results from the topological structure of the ow in which the updraughts (represented by hot gas) form a connected network, whereas the downdraughts (associated with isolated cool clouds) are discon...
متن کاملFountains, histograms, and q-identities
Merlini and Sprugnoli [6] discuss fountains and histograms; for the reader’s convenience, we review a few key issues here. A fountain with n coins is an arrangement of n coins in rows such that each coin in a higher row touches exactly two coins in the next lower row. A p-histogram is a sequence of columns in which the height of the ( j +1)st column is at most k + p, if k is the height of colum...
متن کاملCfd Analysis of Impinging Axisymmetric Turbulent Fountains
When a positively buoyant vertical fluid jet directed downwards from its source impinges on a horizontal flat surface, the resulting flow is termed an “impinging fountain”. These flows arise in a number of practical situations, for example, in gas metal arc welding (GMAW). Developing a description of this flow presents the researcher with a number of challenges and forms the motivation for this...
متن کاملThe biology of joy.
Richard Davidson was in a lab observing a Buddhist Monk Sink deep into serene meditation when he noticed something that sent his own pulse racing. Davidson, a professor of psychology and psychiatry at the University of Wisconsin, hurriedly double-checked the data streaming to his computer from electrodes attached to the monk's skull, but there was no mistake. Electrical activity in the left pre...
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ژورنال
عنوان ژورنال: International Journal of Hospitality Beverage Management
سال: 2018
ISSN: 2639-1376
DOI: 10.34051/j/2019.6