Energy, combustion, and environment by Norman Chigier, McGraw-Hill, 1981, 496 pages, $44.95

No Abstract.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/37382/1/690280229_ftp.pd

Dynamics of bullet shaped bubbles encountered in vertical gas liquid slug flow

A theoretical analysis is presented of the liquid film flowing around long, bullet shaped, gas bubbles which characterize the slug-flow regime in two-phase flow through vertical pipe. Integral mass and momentum balances on the liquid film allow the prediction of gas bubble shape, liquid holdup around the bubble, wall shear stress acting on the liquid film, and velocity profiles in the liquid film. These predictions are in good agreement with data available in the literature.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/37336/1/690110415_ftp.pd

Unsteady state gas-liquid slug flow through vertical pipe

Macroscopic mass and momentum balances have been used to predict the unsteady behavior of gas-liquid slug flow through vertical pipe. Equations have been developed to predict the time-dependent pressure drop along the pipe as well as the time-averaged pressure drop. The results of the analysis indicate that the gas bubble lengths and frequencies of generation must be known before the pressure drop can be predicted as a function of time. In this work the bubble generation was specified in two ways: by experimental measurement of the bubble lengths and frequencies of generation from an optical technique developed for this purpose, and by assuming a periodic generation of gas bubbles of uniform length. The comparisons between predicted and measured pressure drops (both time dependent and time averaged) are satisfactory and appear to support the theoretical model. An extension of the results obtained in light of the published information on solid-gas and immiscible liquid-liquid systems in slug flow permits the introduction of generalized concepts of slug flow behavior in two-phase systems.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/37335/1/690110409_ftp.pd

Pressure drops and void fractions in horizontal two-phase flows of potassium

Vapor-liquid flow of a potassium-8% sodium mixture was studied with the use of a boiling heat transfer test loop. Pressure drop data were obtained from a 36-in. long, 0.495-in. I.D. unheated test section. Void fractions were measured at the midpoint of the test section with gamma ray attenuation. Flows were essentially frictional. Quality, total flow rate, and absolute pressure were the principal variables affecting the pressure drop results, which were correlated in terms of a two-phase friction factor. A metallic void fraction correlation was developed from previously reported data for other metallic fluids together with the potassium data of this study. The potassium two phase friction factors fall substantially lower than values predicted by well-known frictional pressure drop correlations. Metallic void friction values are appreciably lower than data for other fluid systems. Velocity slip ratios appear to be much higher than for other fluid systems due to high liquid-to-vapor density ratios and low void fractions.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/37340/1/690120112_ftp.pd

Binary gas diffusion of methane-nitrogen through porous solids

Diffusion rates of nitrogen and methane have been measured across ten porous solids at 35°C and 1 atm by a steady state flow method. The porous plugs used were cylindrical in shape, with diffusion occurring in the direction of the axis. Diffusion data were taken with porous cores either dry or saturated with liquids. Water and n -heptane were used as saturating liquids. The rather complex internal structure of porous solids were indirectly characterized through some auxiliary measurements. These included porosity, permeability, and electrical resistivity factor (yet another indirect measurement of tortuosity). The effective diffusion coefficients were correlated for the gas phase diffusion as a function of porosity. The ratio of effective diffusion coefficient to the open space diffusion coefficient ( De / Do ) was correlated for dry cores using the properties approximately characterizing the pore structure.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/37376/1/690230317_ftp.pd

Strategic Stockpile in Natural Gas

http://deepblue.lib.umich.edu/bitstream/2027.42/96622/1/39015087358274.pd

The Stability Of Liquid Free Surfaces.

PhDMechanical engineeringUniversity of Michigan, Horace H. Rackham School of Graduate Studieshttp://deepblue.lib.umich.edu/bitstream/2027.42/183615/2/0005745.pd

The calculation of transient response using the analog computer

http://deepblue.lib.umich.edu/bitstream/2027.42/8425/5/bad5278.0001.001.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/8425/4/bad5278.0001.001.tx

Flashing and cavitation studies : technical report

http://deepblue.lib.umich.edu/bitstream/2027.42/8430/5/bad4941.0001.001.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/8430/4/bad4941.0001.001.tx

A mathematical model for the poppet nozzle

http://deepblue.lib.umich.edu/bitstream/2027.42/4300/5/bac1541.0001.001.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/4300/4/bac1541.0001.001.tx