Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Fixed beds"”.
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Adsorption of acetaldehyde vapour in low concentration in air with fixed-beds of charcoal
Digitized by Kansas Correctional Industries
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A “Human Endeavor”: Killing In Contemporary U.S. Combat Narratives
… numerical model of dam-break flows on movable beds. Three tasks are defined to accomplish the goal of this study. The first task is developing a 3-D hydrodynamic model to simulate dam-break flow on fixed beds with simple geometry and test the water surface tracking technique. This model solves …
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The Effect of Wall Jet Flow on Local Scour Hole
… of the effect of horizontal wall jets on rough, fixed and mobile beds in open channel flow. Experimental tests were carried out, using fixed and mobile sediment beds. Computer simulation models for the flow within the jet and resulting sediment transport were developed and their results analysed …
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Convective Heat Transfer in a Moving Bed with Special Reference to Melting
… melting of metals or organic solids in packed beds in the accepted manner of heat transfer factor or Nusselt number against Reynolds number. it was recognised that melting in a tower furnace was restricted to a short zone at the bottom so, to simplify the problem, Akers (2) simulated the upper …
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Flow-through membrane microreactor for intensified heterogeneous catalysis
… microchannel reactor compared to catalytic fixed beds is proven experimentally. Although the flat and thin geometry of membranes is advantageous in terms of high throughput at minimum contact time, it is unfavorable regarding axial dispersion. This prevents application in consecutive low …
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Local liquid velocity measurement of trickle bed reactor using digitial industrial X-ray radiography
<p>"Trickle Bed Reactors (TBRs) are fixed beds of particles in which both liquid and gas flow concurrently downward. They are widely used to produce not only fuels but also lubrication products. The measurement and the knowledge of local liquid velocities (VLL) in TBRs is less which is essential …
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Adsorption Thermodynamics and Mass Transfer of Toxic Volatile Organic Compounds in Activated -Carbon Fiber -Cloth for Air Pollution Control
… of square matrices of fibers within miniature fixed beds. Reflective lattice boundary conditions were developed to define complex solid configurations and provide a second order accurate solution on the boundaries. The models developed for this research were then integrated into a numerical …
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Hydrodynamic interactions of complex fluids and fibrous media
… and non-Newtonian fluids flowing through fixed arrays of fibers (fibrous media), and ii) fibers suspended in fluids and the rheological changes resulting from the fiber-fluid hydrodynamic interactions. First, the flow of Newtonian fluids through and at the interface of fibrous porous media …
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Investigation of Multiphase Reactor Hydrodynamics Using Magnetic Resonance Imaging
… of the gas and liquid phases in the packed beds, and of the gas and the solid phases in the fluidised bed. This study reports the first spatially resolved velocity measurements of both the gas and liquid phases in a co-current upflow bed, and the gas and solid phases of an isolated bubble in …
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Managing complexity in high-concentration flow modelling aimed at hazard assessment: numerical and practical aspects
… with reference to clear water flows over fixed beds, while knowledge about the influence on high-concentration flows over mobile beds is still limited. Here, a rough, bread new mathematical description is proposed, in order to take into account the 3D morphodynamics effects caused by …