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

Nonfiction, Science & Nature, Science, Physics, Thermodynamics, Technology, Engineering, Mechanical
Cover of the book Buoyancy-Thermocapillary Convection of Volatile Fluids in Confined and Sealed Geometries by Tongran Qin, Springer International Publishing
View on Amazon View on AbeBooks View on Kobo View on B.Depository View on eBay View on Walmart
Author: Tongran Qin ISBN: 9783319613314
Publisher: Springer International Publishing Publication: July 25, 2017
Imprint: Springer Language: English
Author: Tongran Qin
ISBN: 9783319613314
Publisher: Springer International Publishing
Publication: July 25, 2017
Imprint: Springer
Language: English

This thesis represents the first systematic description of the two-phase flow problem. Two-phase flows of volatile fluids in confined geometries driven by an applied temperature gradient play an important role in a range of applications, including thermal management, such as heat pipes, thermosyphons, capillary pumped loops and other evaporative cooling devices.  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.

View on Amazon View on AbeBooks View on Kobo View on B.Depository View on eBay View on Walmart

This thesis represents the first systematic description of the two-phase flow problem. Two-phase flows of volatile fluids in confined geometries driven by an applied temperature gradient play an important role in a range of applications, including thermal management, such as heat pipes, thermosyphons, capillary pumped loops and other evaporative cooling devices.  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.

More books from Springer International Publishing

Cover of the book Dental Composite Materials for Direct Restorations by Tongran Qin
Cover of the book Towards Paraconsistent Engineering by Tongran Qin
Cover of the book Vacuum Drying for Extending Food Shelf-Life by Tongran Qin
Cover of the book Integration of Large-Scale Renewable Energy into Bulk Power Systems by Tongran Qin
Cover of the book The International Dimensions of Democratization in Egypt by Tongran Qin
Cover of the book African Female Entrepreneurship by Tongran Qin
Cover of the book Against the Hypothesis of the End of Privacy by Tongran Qin
Cover of the book Graph Drawing and Network Visualization by Tongran Qin
Cover of the book Lasers in Materials Science by Tongran Qin
Cover of the book Shaping American Democracy by Tongran Qin
Cover of the book Recent Advances on Soft Computing and Data Mining by Tongran Qin
Cover of the book Shaping Peace in Kosovo by Tongran Qin
Cover of the book Nanotechnology: Principles and Practices by Tongran Qin
Cover of the book Hybrid Dynamical Systems by Tongran Qin
Cover of the book Complex Analysis for Practical Engineering by Tongran Qin
We use our own "cookies" and third party cookies to improve services and to see statistical information. By using this website, you agree to our Privacy Policy