منابع مشابه
Modelling Buoyancy Induced Flows of Passive Cooling Systems
The main objective of this study is to develop and validate a systematic methodology to model a system of buried pipes, assisted by a solar chimney to promote the natural ventilation, in the whole building simulation software ESP-r (Clarke 2001), from a software user perspective. This development was supported by monitored data collected at an experimental site in Évora, Portugal. A multi-zone ...
متن کاملEvaluation of Buoyancy-induced Flows by a White-light Digital Technique
Optical techniques have a long tradition in studying flow phenomena. In particular, speckle photography, introduced in 1968, has been extensively used. White-light speckle photography has certain advantages with respect to traditional speckle photography, which makes it a more robust method. The aim of this work is to evaluate quantitatively advantages and disadvantages of the technique using b...
متن کاملTurbulence Modeling in Stratified Flows Subject to Advective Buoyancy Fluxes
The goal of this work is to examine in detail how turbulence evolves in the presence of both vertical stratification and horizontal (straining) buoyancy fluxes. Horizontal density gradients are a ubiquitous feature of estuarine and coastal flows, as are sheared velocity profiles. The combination of these two features produces a buoyancy flux which can be either stabilizing or destabilizing, dep...
متن کاملLiquid Particles Tracing in Three-dimensional Buoyancy-driven Flows
Buoyancy-driven convective flows are numerically analyzed in a cubic enclosure, containing a liquid subjected to a temperature difference between opposite lateral walls; all other walls are thermally insulated. The stationary gravity vector is perpendicular to the applied temperature gradient. The steady flow patterns are investigated within the framework of a liquid particles tracing technique...
متن کاملThermally stratifying a wind tunnel for buoyancy influenced flows
A novel method of heating wind tunnel flows to strong thermal stratifications is described. Variable electric heating is employed to create user-selectable temperature profiles in steady, uniform mean flow. Linear temperature gradients of up to 200~ (V/iisfil~i frequencies of 2.5 rad s1) can be sustained. The performance of the facility is discussed in the context of continuouslystratified grid...
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ژورنال
عنوان ژورنال: Journal of Electronic Packaging
سال: 1989
ISSN: 1043-7398,1528-9044
DOI: 10.1115/1.3226555