Author: Raymond N. Laoulache
Publisher:
ISBN:
Category :
Languages : en
Pages : 346
Book Description
Theoretical and Empirical Study of Single Substance, Upward Two-phase Flow in a Constant-diameter Adiabatic Pipe
Author: Raymond N. Laoulache
Publisher:
ISBN:
Category :
Languages : en
Pages : 346
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 346
Book Description
Theoretical and Empirical Study of Single-substance, Upward, Two-phase Flow in a Constant-diameter Adiabatic Pipe
Author: Raymond N. Laoulache
Publisher:
ISBN:
Category :
Languages : en
Pages : 173
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 173
Book Description
Theoretical and Empirical Study of Single-substance, Upward Two-phase Flow in a Constant-diameter Adiabatic Pipe
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 193
Book Description
A Scheme is developed to describe the upward flow of a two-phase mixture of a single substance in a vertical adiabatic constant area pipe. The scheme is based on dividing the mixture into a homogeneous core surrounded by a liquid film. This core may be a mixture of bubbles in a contiguous liquid phase, or a mixture of droplets in a contiguous vapor phase. Emphasis is placed upon the latter case since the range of experimental measurements of pressure, temperature, and void fraction collected in this study fall in the slug-churn''- annular'' flow regimes. The core is turbulent, whereas the liquid film may be laminar or turbulent. Turbulent stresses are modeled by using Prandtl's mixing-length theory. The working fluid is Dichlorotetrafluoroethane CCIF2-CCIF2 known as refrigerant 114 (R-114); the two-phase mixture is generated from the single phase substance by the process of flashing. In this study, the effect of the Froude and Reynolds numbers on the liquid film characteristics is examined. The compressibility is accounted for through the acceleration pressure gradient of the core and not directly through the Mach number. An expression for an interfacial friction coefficient between the turbulent core and the liquid film is developed; it is similar to Darcy's friction coefficient for a single phase flow in a rough pipe. Finally, an actual steam-water geothermal well is simulated; it is based on actual field data from New Zealand. A similarity theory is used to predict the steam-water mixture pressure and temperature starting with laboratory measurements on the flow of R-114.
Publisher:
ISBN:
Category :
Languages : en
Pages : 193
Book Description
A Scheme is developed to describe the upward flow of a two-phase mixture of a single substance in a vertical adiabatic constant area pipe. The scheme is based on dividing the mixture into a homogeneous core surrounded by a liquid film. This core may be a mixture of bubbles in a contiguous liquid phase, or a mixture of droplets in a contiguous vapor phase. Emphasis is placed upon the latter case since the range of experimental measurements of pressure, temperature, and void fraction collected in this study fall in the slug-churn''- annular'' flow regimes. The core is turbulent, whereas the liquid film may be laminar or turbulent. Turbulent stresses are modeled by using Prandtl's mixing-length theory. The working fluid is Dichlorotetrafluoroethane CCIF2-CCIF2 known as refrigerant 114 (R-114); the two-phase mixture is generated from the single phase substance by the process of flashing. In this study, the effect of the Froude and Reynolds numbers on the liquid film characteristics is examined. The compressibility is accounted for through the acceleration pressure gradient of the core and not directly through the Mach number. An expression for an interfacial friction coefficient between the turbulent core and the liquid film is developed; it is similar to Darcy's friction coefficient for a single phase flow in a rough pipe. Finally, an actual steam-water geothermal well is simulated; it is based on actual field data from New Zealand. A similarity theory is used to predict the steam-water mixture pressure and temperature starting with laboratory measurements on the flow of R-114.
Energy Research Abstracts
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 424
Book Description
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 424
Book Description
Dissertation Abstracts International
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 468
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 468
Book Description
Workshop Report
Author:
Publisher:
ISBN:
Category : Geothermal engineering
Languages : en
Pages : 328
Book Description
Publisher:
ISBN:
Category : Geothermal engineering
Languages : en
Pages : 328
Book Description
Two-Phase Flows
Author: Shih-i Pai
Publisher: Springer-Verlag
ISBN: 3322863484
Category : Science
Languages : de
Pages : 373
Book Description
Publisher: Springer-Verlag
ISBN: 3322863484
Category : Science
Languages : de
Pages : 373
Book Description
A Study of Adiabatic, Two-phase Flow of a Single-component Fluid in Horizontal Pipes
Author: Michael Iserhien Osarugiuwa Ero
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 62
Book Description
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 62
Book Description
Single-substance, Two-phase Duct Flow
Author: Dimitris Evangelos Nikitopoulos
Publisher:
ISBN:
Category :
Languages : en
Pages : 422
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 422
Book Description
An Index to the Two-phase Gas-liquid Flow Literature
Author: S. William Gouse
Publisher:
ISBN:
Category : Two-phase flow
Languages : en
Pages : 902
Book Description
Publisher:
ISBN:
Category : Two-phase flow
Languages : en
Pages : 902
Book Description