Viscous fingers in superheated geothermal systems

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In this paper we investigate the physical controls upon the rate of vaporization of liquid as it is injected into a porous layer containing superheated vapour. We develop a simple model of the process and show that if liquid is injected at a relatively high rate, a small fraction of the liquid vaporizes and the porous layer becomes filled with hot liquid. In contrast, at low rates of injection a large fraction of the liquid may vaporize. We also describe a new and fundamental instability that can develop at a migrating liquid-vapour interface if the rate of injection is sufficiently ... continued below

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217-221

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Fitzgerald, Shaun D.; Woods, Andres W. & Shook, Mike January 20, 1994.

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Description

In this paper we investigate the physical controls upon the rate of vaporization of liquid as it is injected into a porous layer containing superheated vapour. We develop a simple model of the process and show that if liquid is injected at a relatively high rate, a small fraction of the liquid vaporizes and the porous layer becomes filled with hot liquid. In contrast, at low rates of injection a large fraction of the liquid may vaporize. We also describe a new and fundamental instability that can develop at a migrating liquid-vapour interface if the rate of injection is sufficiently small. This phenomenon is manifest in the form of liquid fingers growing from a liquid-vapour interface and is investigated through the use of analytical, experimental and numerical techniques.

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217-221

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  • Proceedings, nineteenth workshop on geothermal reservoir engineering, Stanford University, Stanford, CA, January 18-20, 1994

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  • Report No.: SGP-TR-147-31
  • Grant Number: AC07-76ID01570
  • Office of Scientific & Technical Information Report Number: 889213
  • Archival Resource Key: ark:/67531/metadc873153

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Office of Scientific & Technical Information Technical Reports

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  • January 20, 1994

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 2, 2016, 6:13 p.m.

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Fitzgerald, Shaun D.; Woods, Andres W. & Shook, Mike. Viscous fingers in superheated geothermal systems, article, January 20, 1994; United States. (digital.library.unt.edu/ark:/67531/metadc873153/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.