Buoyancy-Thermocapillary Convection of Volatile Fluids in Confined and Sealed Geometries

  • Aug 08, 2017
  • Google
  • Others
  • 137
B7ec59f19f672763769a1b4e577f7a92


0 reviews

Aug, 2017

READ       REVIEWS       DOWLOAD

Description

Previously, this problem has been addressed using a piecemeal approach that relied heavily on correlations and unproven assumptions, and the science and technology behind heat pipes have barely evolved in recent decades. The model introduced in this thesis, however, presents a comprehensive physically based description of both the liquid and the gas phase. The model has been implemented numerically and successfully validated against the available experimental data, and the numerical results are used to determine the key physical processes that control the heat and mass flow and describe the flow stability. One of the key contributions of this thesis work is the description of the role of noncondensables, such as air, on transport. In particular, it is shown that many of the assumptions used by current engineering models of evaporative cooling devices are based on experiments conducted at atmospheric pressures, and these assumptions break down partially or completely when most of the noncondensables are removed, requiring a new modeling approach presented in the thesis. Moreover, Numerical solutions are used to motivate and justify a simplified analytical description of transport in both the liquid and the gas layer, which can be used to describe flow stability and determine the critical Marangoni number and wavelength describing the onset of the convective pattern. As a result, the results presented in the thesis should be of interest both to engineers working in heat transfer and researchers interested in fluid dynamics and pattern formation.

Publish

Title: Buoyancy-Thermocapillary Convection of Volatile Fluids in Confined and Sealed Geometries
Language: English
Publication Date: 2017-08-08
NOTICE: BOOK CONTENT AND LINKS HAVE COLLECTED FROM THE INTERNET, YOU MAY GET BROKEN LINK OR COPYRIGHT COMPLAINT. YOU CAN BUY THIS BOOK OR PLEASE MAIL TO daviddlinville at GMX dot COM TO REPORT

Tags