Two-Component Two-Phase Flow Parameters for Low Circulation Rates

PDF Version Also Available for Download.

Description

Two-phase flow parameters for upward cocurrent vertical flow were studied in air--water, nitrogen- Freon-113, and nitrogen-- mercury mixtures. Tests were performed in natural-circulation loops at atmospheric pressure. The superficial liquid velocity ranged from 0 to 1 ft/sec; quality ranges were as follows: for air-water, 0.0125 to 0.100; for nitrogen-- Freon-113, 0.002 to 0.006; for nitrogen-mercury, 0.00005 to 0.0024. The studies of air--water and nitrogen-- Freon-113 mixtures were made in 2.75-in.-ID test section; the nitrogen- - mercury study was made in a 2-in.-ID pipe. The two-phase flow parameters were found to change significantly with superficial liquid velocity and quality in this ... continued below

Physical Description

Pages: 68

Creation Information

Smissaert, G. E. July 1, 1963.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 21 times . More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Publishers

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

Two-phase flow parameters for upward cocurrent vertical flow were studied in air--water, nitrogen- Freon-113, and nitrogen-- mercury mixtures. Tests were performed in natural-circulation loops at atmospheric pressure. The superficial liquid velocity ranged from 0 to 1 ft/sec; quality ranges were as follows: for air-water, 0.0125 to 0.100; for nitrogen-- Freon-113, 0.002 to 0.006; for nitrogen-mercury, 0.00005 to 0.0024. The studies of air--water and nitrogen-- Freon-113 mixtures were made in 2.75-in.-ID test section; the nitrogen- - mercury study was made in a 2-in.-ID pipe. The two-phase flow parameters were found to change significantly with superficial liquid velocity and quality in this low-circulation range. Slip ratios were found to be directly proportional to the surface tension of the liquid, and inversely proportional to the dynamic viscosity of the liquid. Dimensional analysis was used to correlate slip ratios and gas-to-liquid holdups as a function of four dimensionless groups which included the liquid circulation rate, the gas circulation rate, the surface tension of the liquid, the dynamic viscosity of the liquid, the density of the liquid, the density of the gas, the pipe diameter, and the acceleration due to gravity. Empirical relations were developed to evaluate slip ratios and void fractions as a function of the above-listed parameters. Flow-pattern effects were found to be conveniently described by means of a variable exponent of the Froude number. This exponent was observed to be a linearly decreasing function of the logarithm of the ratio of the volumetric flow rates. (auth)

Physical Description

Pages: 68

Source

  • Other Information: Orig. Receipt Date: 31-DEC-63

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Report No.: ANL-6755
  • Grant Number: W-31-109-ENG-38
  • DOI: 10.2172/4690066 | External Link
  • Office of Scientific & Technical Information Report Number: 4690066
  • Archival Resource Key: ark:/67531/metadc1033506

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • July 1, 1963

Added to The UNT Digital Library

  • Oct. 18, 2017, 7:39 a.m.

Description Last Updated

  • Jan. 9, 2018, 10:43 a.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 1
Total Uses: 21

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Smissaert, G. E. Two-Component Two-Phase Flow Parameters for Low Circulation Rates, report, July 1, 1963; Illinois. (digital.library.unt.edu/ark:/67531/metadc1033506/: accessed September 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.