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Showing 1 to 20 of 38 for “"Swirling flow"”.
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Heat transfer analysis of thermoelectric driven swirling flow
… heat flux without significant evaporation. A swirling flow pattern was observed during the experiment which was firstly believed to be Marangoni effect. To reveal the truth of this flow the Solid/Liquid Lithium Divertor Experiment (SLiDE) was constructed at University of Illinois, Center for …
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Fuel-NOx Formation during Low-Grade Fuel Combustion in a Swirling-Flow Burner
… of biomass tests in a pilot-scale (0.2 MW), swirling flow burner. Two-dimensional gas species mole fraction data were collected with state-of-theart instruments from nine experiments, composing one herbaceous biomass (straw), one woody biomass (sawdust), a low sulfur sub-bituminous coal …
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The Numerical solution of the radial-equilibrium equation for swirling flow in arbitrarily shaped ducts
… The complete equation is derived for nonviscous flow and the simplifications are indicated. Five different techniques for the solution of three-dimensional compressible flow in a duct are examined in detail. A comparison with M. Vavra's results (11) is given for an accelerating bend with …
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Velocity field measurements of a jet confined to a swirling flow using digital particle image velocimetry cinematography
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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The impact of unsteady swirling flow in a single gland labyrinth seal on rotordynamic stability : theory and experiment
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
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Experimental investigation of the mixing of an axial jet within a swirling flow, utilizing laser Doppler velocimetry and particle image velocimetry
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.
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Numerical Analysis of Flow and Heat Transfer through a Lean Premixed Swirl Stabilized Combustor Nozzle
… well as numerical approaches for several inlet flow conditions under both non-reacting and reacting flows. These studies may be expected to provide valuable insights for the industrial design communities towards identifying thermal hot spot locations as well as in quantifying the heat transfer …
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Effect of inlet configurations on the aerodynamics of swirl combustors
The flowfield in a swirling combustor with a Confinement Ratio of 1.6 was simulated in water. Qualitative measurements were made from flow visualization in a horizontal water rig with the help of Pliolite beads and liquid dye. Velocity and turbulence measurements were made in a cold air flow rig. …
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Departure from nucleate boiling and pressure drop prediction for tubes containing multiple short-length twisted-tape swirl promoters
… fuel is the continuous medium and the moderator flows through coolant channels, has potential to outperform a traditional pressurized water reactor (PWR). Similar to the traditional PWR, the IPWR design involves a tradeoff between core pressure drop and the minimum departure from nucleate boiling …
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Heat Transfer and Flow Measurements on a One-Scale Gas Turbine Can Combustor Model
… convective heat load to combustor liner due to swirling flow generated by swirler nozzles. An experimental combustor test model was designed and fitted with a swirler nozzle provided by Solar Turbines Inc. Heat transfer and pressure distribution measurements were carried out along the combustor …
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The role of impeller outflow conditions on the performance and stability of airfoil vaned radial diffusers
… the relative importance of the impeller outflow angle, Mach number, non-uniformity and unsteadiness on diffuser performance, through diffuser experiments in a compressor stage and in a swirling flow test rig combined with steady and unsteady Reynolds-Averaged Navier Stokes computations. The …
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New Methodology for the Estimation of StreamVane Design Flow Profiles
… which is considered a type of non-uniform inflow inlet distortion, is characterized by the presence of swirling flow in an inlet. The presence of swirling flow entering an engine can affect the compression systems performance and operability, therefore it is an area of current research. A …
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Lattice Boltzmann Methods for Diffuse and Mobile Interfaces
… of LB models which approximate Navier-Stokes flows. Improved LB models are formulated and validated through point-by-point comparison with limiting benchmark flows. Finally, the modified LB models are used to study a complex swirling flow in the strongly non-linear regime and to elucidate the …
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CFD Study of Taylor-Like Vortices in Swirling Flows
<p>Swirling flows are complex fluid motions that appear in various natural phenomena and man-made devices. Numerous engineering applications such as turbomachinery, jet engine combustion chambers, mixing tanks and industrial burners involve swirling flows. This wide range of applications is due to …
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An engine air-brake integration study
… ratio (BPR) fan rotor to produce drag quietly by swirling flow out of the fan nozzle. The swirling motion yields low pressure in the vortex core from simple radial equilibrium, thereby generating pressure drag. The 4-BB internal plug and 5-BB external plug nozzles of BPR 8 are chosen to provide a …
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Investigation of Dynamics in Turbulent Swirling Flows Aided by Linear Stability Analysis
Turbulent swirling flows are important in many applications including gas turbines, furnaces and cyclone dust separators among others. Although the mean flow fields have been relatively well studied, a complete understanding of the flow field including its dynamics has not been achieved. The work …
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Experimental aero-acoustic assessment of swirling flows for drag applications
… presented in this thesis regards the use of swirling exhaust flows capable of generating pressure drag quietly by establishing a steady streamwise vortex. The simple concept of a so called swirl tube, a ducted set of stationary turning vanes, was implemented to experimentally assess the …
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Heat Transfer and Flow Characteristic Study in a Low Emission Annular Combustor
… (DLE) combustors are characterized by highly swirling and expanding flows that makes the convective heat load on the combustor liner gas side difficult to predict and estimate. A coupled experimental-numerical study of swirling flow and its effects on combustor liner heat transfer inside a DLE …
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Dynamics of swirling jets and flames
Even the simplest swirling jet flows possess an astonishing degree of complexity. This complexity is a two-edged sword, presenting both a unique opportunity to advance the science of fluid mechanics as well as a major barrier for a variety of engineering applications. In particular, swirling jet …
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