An Instability Effect on Two-phase Heat Transfer for Subcooled Water Flowing Under Conditions of Zero Gravity

An Instability Effect on Two-phase Heat Transfer for Subcooled Water Flowing Under Conditions of Zero Gravity PDF Author: S. Stephen Papell
Publisher:
ISBN:
Category : Resistance heating
Languages : en
Pages : 24

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Book Description
Subcritical, subcooled boiling heat-transfer data were obtained for distilled water flowing through a resistance-heated tube in a gravity-free environment lasting approximately 15 seconds. Two types of flow models were found to exist under identical test conditions. An instability initiated by a momentary interruption of flow forced the transition from a highly subcooled bubbly flow to a postulated slug flow that resulted in a 16-percent increase in local heat-transfer coefficients. The slug-flow regime was described as consisting of two phases in a highly nonequilibrium thermodynamic state. A duplication of test conditions that produced the transition in a zero-gravity environment failed to do so under Earth-gravity conditions.

An Instability Effect on Two-phase Heat Transfer for Subcooled Water Flowing Under Conditions of Zero Gravity

An Instability Effect on Two-phase Heat Transfer for Subcooled Water Flowing Under Conditions of Zero Gravity PDF Author: S. Stephen Papell
Publisher:
ISBN:
Category : Resistance heating
Languages : en
Pages : 24

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Book Description
Subcritical, subcooled boiling heat-transfer data were obtained for distilled water flowing through a resistance-heated tube in a gravity-free environment lasting approximately 15 seconds. Two types of flow models were found to exist under identical test conditions. An instability initiated by a momentary interruption of flow forced the transition from a highly subcooled bubbly flow to a postulated slug flow that resulted in a 16-percent increase in local heat-transfer coefficients. The slug-flow regime was described as consisting of two phases in a highly nonequilibrium thermodynamic state. A duplication of test conditions that produced the transition in a zero-gravity environment failed to do so under Earth-gravity conditions.

An Instability Effect on Two-phase Heat Transfer for Subcooled Water Flowing Under Conditions of Zero Gravity

An Instability Effect on Two-phase Heat Transfer for Subcooled Water Flowing Under Conditions of Zero Gravity PDF Author: S. Stephen Papell
Publisher:
ISBN:
Category : Resistance heating
Languages : en
Pages : 0

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NASA Technical Note

NASA Technical Note PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 440

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Microgravity Two-phase Flow and Heat Transfer

Microgravity Two-phase Flow and Heat Transfer PDF Author: Kamiel S. Gabriel
Publisher: Springer Science & Business Media
ISBN: 1402051433
Category : Technology & Engineering
Languages : en
Pages : 252

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Book Description
Multiphase thermal systems have numerous applications in aerospace, heat-exchange, transport of contaminants in environmental systems, and energy transport and conversion systems. A reduced - or microgravity - environment provides an excellent tool for accurate study of the flow without the masking effects of gravity. This book presents for the first time a comprehensive coverage of all aspects of two-phase flow behaviour in the virtual absence of gravity.

Monthly Catalog of United States Government Publications

Monthly Catalog of United States Government Publications PDF Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1958

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Basic Aspects of Two Phase Flow and Heat Transfer

Basic Aspects of Two Phase Flow and Heat Transfer PDF Author: V. K. Dhir
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 200

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Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 968

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Monthly Catalog of United States Government Publications, Cumulative Index

Monthly Catalog of United States Government Publications, Cumulative Index PDF Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1250

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Boiling and Two-phase Flow for Heat Transfer Engineers

Boiling and Two-phase Flow for Heat Transfer Engineers PDF Author: Harold Alexander Johnson
Publisher:
ISBN:
Category : Ebullition
Languages : en
Pages : 308

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Energy Research Abstracts

Energy Research Abstracts PDF Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 752

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