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A study of hydrodynamics and mass transfer in small bore deep shaft reactors.08 September 2010 (has links)
The phenomenology of vertical two phase flow was examined / Thesis (Ph.D.)-University of Natal, Durban, 1984.
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Wave propagation and choking in two-phase two-component flowLiles, Dennis Richardson 12 1900 (has links)
No description available.
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Modeling of once-through steam generator thermal-hydraulics during a loss of coolant accidentKamboj, Brij Kumar 05 1900 (has links)
No description available.
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Two-phase flow regime maps and pressure drop in microchannelsTriplett, Kimberly Ann 12 1900 (has links)
No description available.
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Bubble pump design and performanceWhite, Susan Jennifer 08 1900 (has links)
No description available.
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Steady turbulent gas desorption in a horizontal pipelineNaghash, Mahmood 05 1900 (has links)
No description available.
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Onset of flow instability and critical heat flux in uniformly-heated microchannelsRoach, Gregory M., Jr. 08 1900 (has links)
No description available.
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Slug Velocity Measurement and Flow Regime Recognition Using Acoustic Emission TechnologyAlssayh, Muammer Ali Ahmed 07 1900 (has links)
Slug velocity measurement and flow regime recognition using acoustic emission technology are presented. Two non-intrusive and three intrusive methods were employed to detect the slug regime and measure its velocity using AE sensors. For the non-intrusive methods, AE sensors were placed directly on the exterior of the steel pipe section of the test rig with and without clamps. The intrusive method involved using different waveguide configurations with the AE sensors flush with the inner wall of the pipe.
The experimental study presented investigated the application of Acoustic Emission (AE) technology for detecting slug velocity in addition to differentiating flow regime in two-phase (gas/liquid) flow in horizontal pipes. It is concluded that the slug velocity can be determined with acoustic emission (AE) sensors. The results were compared to slug velocities measured using high speed camera (HSC) and Ultrasound Transit Time (UST) techniques with good agreement between the three techniques at low gas void fraction (GVF). However, at high GVF (up to 95%) where the UST technique has limitations in application, the AE and HSC offered a good agreement. Flow regimes were also differentiated by using a combination of AE technology and Kolmogorov–Smirnov test technique. Stratified, slug and bubble regimes were recognised differentiated.
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自由界面波上のリップル形成に関する実験的研究辻, 義之, TSUJI, Yoshiyuki, 野沢, 幸司, NOZAWA, Kouji, 関, 紘介, SEKI, Kousuke, 久木田, 豊, KUKITA, Yutaka 07 1900 (has links)
No description available.
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Onset and Subsequent Transient Phenomena of Liquid Loading in Gas Wells: Experimental Investigation Using a Large Scale Flow LoopWaltrich, Paulo 2012 August 1900 (has links)
Liquid loading in gas wells is generally described as the inability of the well to lift the co-produced liquids up the tubing, which may ultimately kill the well. There is a lack of dedicated models that can mimic the transient features that are typical of liquid loading. Improved characterization of liquid loading in gas wells and enhanced prediction of future well performance can be achieved from the measurements and analyses resulting from this project.
An experimental investigation was carried out to study the onset of liquid loading and the subsequent transient phenomena, using a large scale flow loop to visualize two-phase flow regimes, and to measure pressure and liquid holdup along a 42-m long vertical tube.
From this investigation, it is possible to conclude that liquid loading should not be characterized based on onset criteria alone, and that it may not be a wellbore-only problem, as it would seem that the reservoir also plays a key role in determining if/when/how liquid loading manifests itself.
Additionally, the results from the experimental campaign were used to compare the performance of different wellbore flow simulators. State-of-the-art simulators do not seem to fully capture the nature of liquid loading in vertical tubes. A simplified model is roposed here to evaluate the liquid transport during the transition from one flow regime to another, during the loading sequence.
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