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Showing 1 to 16 of 16 for “"vertical pipe"”.
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The flow structure under mixed convection in a uniformly heated vertical pipe
For decay heat removal systems in the conceptual Gas-cooled Fast Reactor (GFR) currently under development, passive emergency cooling using natural circulation of a gas at an elevated pressure is being considered. Since GFR cores have high power density and low thermal inertia, relative to the high …
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Pressure drop and phase fraction in oil-water-air vertical pipe flow
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
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The Effect of Natural Convection on Transition to Disturbed Flow in a Vertical Pipe
Made available in DSpace on 2014-12-05T17:15:41Z (GMT). No. of bitstreams: 1 6206225.pdf: 3942747 bytes, checksum: 899735cf3a677aa2b8e0f7407c68532d (MD5) Previous issue date: 1962
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Examination of Fluid-Particle in Turbulent, Non-Dilute, Particle Suspension Flow
… in fully developed turbulent water flow in a vertical pipe (I.D. = 18.4 cm) have been conducted. An analytical model has been developed to predict the stochastic motion of particles in a non-dilute turbulent suspension flow. The model, incorporates hydrodynamic interaction between particles …
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Velocity, temperature and turbulence measurements in air under combined free and forced convection conditions
… buoyancy forces on turbulent upflow of air in a vertical pipe under condit.io:1s of constant wall heat flux at Reynolds numbers of 5000 to 14000. Preliminary velocity and axial turbulence intensity measurements in isothermal flows for Reynolds numbers of 5000 to 32000 are also reported. Velocity …
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Computational fluid dynamics modelling of multi-phase flow transition in presence of solid particles.
… and gas-liquid-solid multi-phase flow in a vertical pipe. A hybrid model, the multi-fluid Euler-Euler and Euler-Euler-Euler model with interfacial area transport equation (IATE), were used to simulate the flow regime spectrum in a large diameter vertical pipe. The hybrid model could simulate …
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The effect of drop concentration on deposition in vertical annular two-phase flow
… needed. Experiments were conducted in a 4.2 cm vertical pipe at an upward superficial gas velocity of 36 m/s and at liquid mass flow rates from 30 to 170 g/s. Photographic drop size measurements were obtained. Measurements of entrainment, gas velocity, slip ratio, and drop concentration were …
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Análise experimental do efeito do ângulo de injeção de gás em um escoamento vertical ascendente de líquido
… effect of the gas injection angle in a upward vertical liquid flow, regarding the bubble size and shape distributions, as well as liquid velocity profile, both in the injection area. The experiments are carried in a 44 mm acrylic vertical pipe, in which water flows and air is injected through …
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Gas lift optimization and flow instability
… processing package “Dynamic studio 2015a” in a vertical transparent pipe (ID: 66 mm, Length: 2 m) thus simulating the prototype sizing of the common artificial gas lift. Numerically a Computational Fluid Dynamics (CFD) models were used with air and water as the working fluids for various cases. …
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Computational Exploration of Thermodynamic Models of Geological CO₂ Injection
… entire flow from injection, down throughout a vertical pipe and into a porous reservoir. To this end, we utilize the MOOSE (Multiphysics Object-Oriented Simulation Environment) framework developed by Idaho National Laboratory to perform finite element simulations. A key contribution of this …
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Three Experiments on Complex Fluids
… a simple yield-stress fluid (Carbopol 940) in a vertical pipe. The Carbopol was displaced from below by an immiscible Newtonian liquid (Fluorinert FC-40) injected at a constant, controlled rate. Rough and smooth-walled pipes were used to study the effects of wall boundary conditions. In the …
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Comprehensive throughflow method for steam turbine development
… is based on empirical deposition measurements in vertical pipe flow, using a coarse estimate of friction velocity. While the choice of friction velocity model is likely to have a strong impact on the deposition rates, most studies use flat-plate boundary layer equations whose flow assumptions …
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Seismic Expressions of Paleokarst
… on seismic data, and paleokarst sinkhole and pipe features were identified. Viola sinkholes can be recognized as structural depressions, characterized by higher seismic variance, and lower positive amplitude, and most-negative curvature. Wapanucka sinkhole features are subtle, show lower …
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The structural setting of the Canaã dos Carajás region and Sossego-Sequeirinho deposits, Carajás – Brazil
… near horizontal (~020° Az) and near vertical respectively. Microstructures in quartz and feldspar indicate deformation at metamorphic conditions compatible with middle to upper amphibolite facies (~650-700°C), overprinted by deformation at middle to upper greenschist facies conditions …
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CFD studies of complex fluid flows in pipes
… and transversal mechanical vibrations on the pipe flow of viscous non-Newtonian fluids of the power-law, Bingham plastic, and Herschel-Bulkley types. Vibration frequencies in the sonic range of 0-300 Hz and linear amplitudes of 0-4 mm were used. The results showed that rotational and …
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Numerical simulations of supercritical water-hydrocarbon mixing in a 3-D cylindrical tee mixer
… in a small-scale cylindrical tee mixer (pipe ID = 2.4mm) under fully miscible conditions. For a Reynolds number at the water inlet of 500 and a [delta]T between the two streams of l00K (Tw,in = 800K, Td,in= 700K), the flow downstream of the mixing joint remained laminar. Most of the …