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Showing 1 to 14 of 14 for “"pipe flows"”.
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Transition to turbulence and relaminarization of pulsatile pipe flows
… to turbulence and its evolution in pulsatile pipe flows involving both, reverse and no-reverse flows, is the primary focus of this experimental work. A piston driven by a programable DC servo motor was used to set up a water flow system and provide the pulsation characteristics. Time-resolved …
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Concurrent evaporating spray jets in dilute gas-solid pipe flows
… concurrent evaporating spray jets in gas-solids pipe flows. A study that combined experiments, analytical modeling and numerical simulation has been carried out to explore the unique characteristics of phase mixing and spray evaporation. A continuously circulating gas-solids suspension flow …
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Triggered laminar-to-turbulent transition in pipe flows of dilute polymer solutions.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1968.
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Dynamic behavior of unsteady turbulent motion in pipe flows of dense gas-solid suspensions
… in dense gas-solid suspension in horizontal pipe flows at low velocities have been observed, but the means for predicting these motions are lacking. For a dense suspension, the effects of particle-particle interaction, the damping of fluid motion by particles and the phase interactions …
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Intelligent Non-Invasive Thermal Energy Flow Rate Sensor for Laminar and Turbulent Pipe Flows
… flow rate sensor for laminar and turbulent pipe flows. Energy flow rate is the thermal energy that is carried by a fluid, for example, in a pipe to heat or cool a space in a building. It can be measured by an energy flow rate sensor which consists of a volume flow rate meter and supply and …
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An Experimental Study of Near-Wall Turbulence Properties in Highly Drag Reduced Pipe Flows of Pseudoplastic Polymer Solutions
Made available in DSpace on 2014-12-13T18:55:38Z (GMT). No. of bitstreams: 1 7820916.pdf: 7029582 bytes, checksum: 692c2bf438064de8029607fec8446b88 (MD5) Previous issue date: 1978
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Experiments on turbulent flows in rough pipes: spectral scaling laws and the spectral link
… attendant turbulent mean velocity profile in a pipe flow, we establish new scaling laws for the turbulent energy spectra of pipe flows. These new scaling laws— an inner scaling law and an outer scaling law—differ from the scaling laws that were predicated on Townsend’s attached–eddy hypothesis …
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Stable and high order accurate finite difference method for the incompressible laminar boundary layer equations
Numerical simulations of incompressible flows are unequivocally important due to their numerous industrial applications. These applications ranges from the large-scale fluid's flow modelling such as aerodynamics [1], atmospheric-ocean modelling [2] to a simple pipe flows in the petroleum industry …
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Experiments in turbulent soap-film flows: Marangoni shocks, frictional drag, and energy spectra
… of the frictional drag in turbulent soap-film flows over smooth walls. These flows are effectively two-dimensional, and we are able to create soap-film flows with the two types of turbulent spectrum that are theoretically possible in two dimensions: the ``enstrophy cascade,'' for which the …
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Experimental Investigations of Internal Air-water Flows
… analysis techniques to the study of gas-liquid pipe flows, with a focus on conditions occurring in header-feeder systems of nuclear reactors under different accident scenarios. Novel experimental techniques have been proposed for the identification of the flow regime and measurement of the flow …
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Theoretical and Computational Analyses on Transition and Turbulence in Purely Oscillating Pipe Flow
… hydrodynamic instability of purely oscillating pipe flows is investigated in terms of the quasi-steady formulation assuming the temporal changes of the laminar base flow relative to disturbances are slow. A simple model equation is introduced to compare the exact solution of the current approach …
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The development and stability of some non-planar boundary-layer flows.
… research on laminar and transitional corner flows. Part 2, comprising Chapters 6–10, considers the sudden blockage of steady laminar flow within a circular pipe. Even though the blockage occurs almost instantaneously, the fluid takes an appreciable time to come to rest. Accordingly, Chapter 6 …
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Exploring plastron stability and fluid friction reduction on robust micro-textured non-wetting surfaces
… skin friction in viscous laminar and turbulent flows is experimentally and theoretically investigated and is the main focus of this thesis. The development of a surface coating that reduces fluid drag can potentially lead to a number of practical applications such as fuel savings in marine …