HIGH ACCELERATION FIELD HEAT TRANSFER FOR AUXILIARY SPACE NUCLEAR POWER SYSTEMS. Quarterly Technical Report, March 1 through May 31, 1962

Technical Report · Thu Oct 31 04:00:00 EST 1963

OSTI ID:4734743

Poppendiek, H F; Greene, N D; Wright, H R; Thompson, A S

Research resuits on liquid metal heat and momentum transfer are presented. A summary of the experimental single and two-phase (water and air) pressure drop measurements in a single fluted helix is presented; photographic descriptions of the geometrical characteristics of the two-phase flow are also given. The experimental pressure drop results are compared with Martinelli's correlation and the viscous-turbulent separated. twophase flow pressure drop solution presented in the previous quarterly report. Analytical studies are outlined for the velocity decay of thin laminar and turbulent liquid layers in vortex motion in a circular pipe. The predictions for single-phase flow are compared with experimental decay measurements. Velocity decay solutions for the case where gaseous films exist between the thin rotating liquid layers and the stationary wall are also described. A description is given of the characteristics of the Hg heat transfer system whose components are being procured. Equations were derived for void coefficients of reactivity in bare, homogeneous, uniform reactors cooled by boiling liquid metals. It is shown that for a boiling coolant having a fixed ratio of absorption-to-scattering cross section, there is a size of reactor above which the void coefficient is positive and below which it is negative. (auth)

• Research Organization: Geoscience Ltd., Solana Beach, Calif.
• NSA Number: NSA-17-019691
• OSTI ID: 4734743
• Report Number(s): TID-16052; GLR-9
• Country of Publication: United States
• Language: English

Related Subjects

ABSORPTION
BOILING
CROSS SECTIONS
EQUATIONS
EVAPORATION
FILMS
FLUID FLOW
HEAT TRANSFER
HOMOGENEOUS REACTORS
LIQUID METAL COOLANT
LIQUID METALS
LIQUIDS
LOSSES
MEASURED VALUES
MERCURY
POWER
PRESSURE
REACTORS
SCATTERING
SPACE APPLICATIONS AND TECHNOLOGY
SPACE VEHICLES
SURFACES
THERMAL DIFFUSION
TUBES
TURBULENCE
VAPOR QUALITY
VAPORS
VISCOSITY
VORTEX FLOW
WATER