Accession Number:

ADA214937

Title:

Design Manual for Microgravity Two-Phase Flow and Heat Transfer

Descriptive Note:

Final rept. Sep 1988-Jun 1989

Corporate Author:

CREARE INC HANOVER NH

Report Date:

1989-10-01

Pagination or Media Count:

141.0

Abstract:

This report documents two-phase fluid flow and heat transfer methods for microgravity environments. The applications of the work are thermal management, propulsion, and fluid storage and transfer systems for spacecraft. In the near future, these systems will include two-phase, vapor-liquid flows. This Design Manual is intended for use by designers of these systems. Design methods are presented for predicting two-phase flow regimes and pressure drops in pipe flows from earth gravity to microgravity conditions. Forced convection boiling heat transfer methods for pipes with uniform heat flux are included. Also included are methods for analyzing high-vapor-shear condensation in pipes. The analysis methods are mechanistic that is, based upon fundamental physical principles which should apply to heat transfer liquids with Pr approx 1 and scale with pipe size and fluid properties. This Manual incorporates simplified methods easy-to-use design charts, detailed descriptions of the analysis methods, comparisons with existing microgravity data, and recommended approaches to quantify the range of uncertainty in design calculations. Keywords Fluid flow Heat transfer Space technology Spacecraft components Thermodynamics Two phase flow. jhd

Subject Categories:

  • Fluid Mechanics
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE