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Showing 1 to 15 of 15 for “"Jet Mixing"”.
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Concentration fluctuations in ducted jet-mixing
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1961.
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Jet mixing: the role of numerical flow visualization
… geometry of the shear layer, with an elliptical jet, for example, exhibiting much greater entrainment than a circular one. It was desired to characterize the entrainment process and to explore the means by which the entrainment might be further enhanced by using the tool of numerical flow …
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Jet Mixing Under the Influence of a Pressure Gradient
Made available in DSpace on 2014-12-10T22:48:10Z (GMT). No. of bitstreams: 1 7114686.pdf: 2819159 bytes, checksum: 67d50c40f2bfada45676a49287c9ff24 (MD5) Previous issue date: 1970
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Quantitative Acetone PLIF Measurements of Jet Mixing with Synthetic Jet Actuators
Fuel-air mixing enhancement in axisymmetric jets using an array of synthetic jet actuators around the perimeter of the flows (primarily parallel to the flow axis) was investigated using planar laser-induced fluorescence of acetone. The synthetic jets are a promising new mixing control and …
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The computer modelling and experimental study of confined jet mixing with application to jet pump design
As an, aid to jet pump design and performance analysis, a theoretical investigation on turbulent confined jet mixing in a non-uniform axisymmetric duct typically used in jet pumps and ejectors has been undertaken. A so-called Prandtl-Kolmogorov two-equation turbulence model, with turbulent kinetic …
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The Non-Isoenergetic Turbulent Jet Mixing of a Two-Dimensional Supersonicjet With Consideration of Its Influence on The Base Pressure Problem
Made available in DSpace on 2014-12-05T19:15:51Z (GMT). No. of bitstreams: 1 0013542.pdf: 2446937 bytes, checksum: 1ad23c458f116f75349fc30ffd504036 (MD5) Previous issue date: 1955
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Planar Laser Induced Fluorescence Experiments and Modeling Study of Jets in Crossflow at Various Injection Angles
… measure the scalar fields of an axisymmetric freejet and an inclined jet-in-crossflow as applicable to film cooling. From the scalar fields, jet-mixing and trajectory characteristics were obtained. In order to validate the technique, the canonical example of a nonreacting freejet of Reynolds …
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Novel Ignition Approaches for Improved Hydrogen Ignition
… schlieren imaging, pressure trace analysis, jet mixing modeling, and constant-pressure homogeneous reactor (CHR) simulations. At 1000K, the 1st injection advanced 2nd injection ignition delay, reducing it from 9.66ms (single-injection) to 0.62ms relative to its start of injection, depending …
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The effect of flow structure on the combustion and heat transfer in a scramjet combustor
… injector configurations was conducted in a scramjet combustor. The object of the study was to determine the effect of mixing augmentation, resulting from the streamwise vortices generated by injector ramps, on scramjet engine operation characteristics, combustion, and heat transfer. Hydrogen was …
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Flow Field Computations of Combustor-Turbine Interactions in a Gas Turbine Engine
… trends were found for the case without dilution jets. The computational predictions of the combustor flow with dilution jets indicated that the turbulence models under-predicted jet mixing. The combustor exit profiles showed non-uniformities both radially and circumferentially, which were …
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The Analysis and Prediction of Jet Flow and Jet Noise about Airframe Surfaces
… These concepts exhibit situations where the jet exhaust interacts with an airframe surface. Jet flows interacting with nearby surfaces exhibit a complex behavior in which acoustic and aerodynamic characteristics are altered. The physical understanding and accurate modeling of these …
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Wake Filling Techniques for Reducing Rotor-Stator Interaction Noise
… and a chord length of 4 inches. Trailing edge jets, trailing edge slots, ejector pumps, and pressure/suction side jets were among the configurations tested for wake filling. A range of mass flow percentages were applied to each configuration and a pressure loss coefficient was determined for …
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Mathematical modeling and design of novel semi-continuous and continuous crystallizations
… antisolvent crystallization in a dual impinging jet crystallizer with cooling crystallization in a mixing tank. This proposed semi-continuous process provides higher degrees of control of the CSD than those obtainable with past crystallizer designs. The proposed approach extends that the …
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IMPACT OF NEW CHEVRON CONFIGURATIONS ON MIXING ENHANCEMENT IN SUBSONIC JETS
… to the overall noise of an aircraft is jet noise – the noise generated by the gases exiting the exhaust nozzle of a jet engine. One approach to mitigate jet noise is through the implementation of chevron nozzles. In the present context, first, a baseline axisymmetric separate-flow …
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Synthesis and Characterization of Surface-Functionalized Magnetic Polylactide Nanospheres
Polylactide homopolymers with pendent carboxylic acid functional groups have been designed and synthesized to be studied as magnetite nanoparticle dispersion stabilizers. Magnetic nanoparticles are of interest for a variety of biomedical applications including magnetic field-directed drug delivery …