Gas-liquid chromatography (GLC) is an effective method for the measurement of total serum cholesterol. Its use in the clinical laboratory, however, requires careful attention to many variables (flow rate, sample size, sensitivity of solvent and choice of the quantitation method, i.e. peak-height ratio vs. peak height). This report evaluates the effect of these variables on the quantitation of s...

Liquid metal MHD (Magneto-Hydro-Dynamic) systems can be employed to produce electricity from a wide range of heat resources. In such a system, a low-boiling organic fluid and a high-temperature liquid metal fluid mix. The former evaporates, and carries the latter to flow through an MHD channel, where the electricity is generated. The mixing process and the gas-liquid flow characteristics will h...

For the study of transients in gas-liquid flows, the equations of the so-called separated flow model are inadequate, because they possess, in the general case where gas and liquid move at different velocities, complex characteristics. This paper is concerned with the equations of motion for bubbly flow. The equations are discussed with emphasis on the aspects of relative motion and the characte...

A capacitance measurement system is developed for the measurement of gas-liquid two-phase flow in glass micro-pipes with inner diameters of 3.96, 2.65 and 1.56 mm, respectively. As a typical flow regime in a micro-pipe two-phase flow system, slug flow is chosen for this investigation. A capacitance sensor is designed and a high-resolution and high-speed capacitance measurement circuit is used t...

Abstract This study is devoted to the experimental investigation of two-phase water-nitrogen flow in slit microchannel with a gap 20 µm and width 10 mm. The technology fabrication has been developed described detail. Experiments were conducted adiabatic conditions. Using modified schlieren system, four patterns have observed described: jet, bubble, churn, annular. Flow pattern map was plotted a...

We propose the rarefied-gas-cushion model (r-GCM), as an extended version of the gas-cushion model (GCM), to estimate the apparent slip of water flowing over a gas layer trapped at a solid surface. Nanobubbles or gas nanofilms may manifest rarefied-gas effects and the r-GCM incorporates kinetic boundary conditions for the gas component in the slip Knudsen regime. These enable an apparent hydrod...