FOllin is an excellent fluid for achieving mobility control of gas in porous media. Practical application of fOllins for EOR processes, however requires a predictive model of foam displacement. Further, quantitative information on fOllin-flow behavior at reservoir flow rates llild pressures is required as input to llily field-scale modeling. An experimental and mechanistic-modeling study is rep...

reaction to fire of fire-retarded rigid pur foams and two types of metal faced rigid polyurethane foam core sandwich panel was evaluated by using cone calorimeter test method. the tests were carried out in various radiative heat fluxes from 15 to 75 kw/m2. the radiation rate effect on reaction to fire parameters, including time to ignition (tti), peak of heat release rate (prhr), total heat rel...

This study presents a method to measure the void fraction in presence of stratified three-phase flow with an opaque fluid like foam. The commonly used resistive probes, which were successfully applied for air-water flows, fail detecting liquid/foam interface due variable conductivity To overcome this problem, new optical was developed. A probe consisting steel rod covered red vinyl plastic blac...

Liquid foams have important practical applications in mineral separation and oil recovery. However, the details of the foam mechanics in these applications are poorly understood. Foam scientists have used 2D foam simulations to model foam behavior and 2D visualization solutions have helped them explore and analyze their data. Three-dimensional foam simulations remove some of the simplifying ass...

The relative immobility of foam in porous media suppresses the formation of fingers during oil displacement leading to a more stable displacement which is desired in various processes such as Enhanced Oil Recovery (EOR) or soil remediation practices. Various parameters may influence the efficiency of foam-assisted oil displacement such as properties of oil, the permeability and heterogeneity of...

Some aspects of wheat pasture bloat have been researched extensively, but few studies have evaluated the effect of wheat type or variety on bloat. Eight Gelbvieh x Angus ruminally cannulated heifers (515 +/- 49 kg of BW) and 48 Angus heifers (238 +/- 12 kg of BW) grazed 1-ha pastures of hard-red or soft-red winter wheat (Triticum aestivum L.) to evaluate the effect of wheat variety on bloat pot...

1. Abstract 2. Introduction 3. Nature of lipid in foam cells 4. Sources of cholesterol that accumulates in foam cells 5. Significance of foam cell formation 5.1. Trapping lipid in lesions versus removing lipid from lesions 5.2. Alteration of macrophage function 6. The use of cultured macrophages to study foam cell formation 7. In vitro foam cell formation 7.1. Plasma lipoproteins 7.2. Non-lipop...

In this paper, we present an immersed boundary (IB) method to simulate a dry foam, i.e., a foam in which most of the volume is attributed to its gas phase. Dry foam dynamics involves the interaction between a gas and a collection of thin liquidfilm internal boundaries that partition the gas into discrete cells or bubbles. The liquid film boundaries are flexible, contract under the influence of ...

Artificial foam structures are used in all kinds of applications, for example, filters, where non‐metallic inclusions filtered out the molten metal. The flow‐through fluid leads to a mechanical loading, which is influenced by flow velocity, viscosity fluid, morphology, and shape filter. Analytical numerical approaches being study influence different parameters on response impact local stresses ...