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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 20 of 135 for “"crossflow"”.
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Flow Visualization Study of Wake-Stabilized Diffusion Flames in a Crossflow: Effects of Crossflow Turbulence
… In the current work, two conditions of upstream crossflow are tested to investigate the effects of turbulence on the flame, including the turbulent flow with enhanced freestream turbulence that is generated by a passive grid placed upstream of the burner, and smooth flow with ambient turbulence …
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Evaporating crossflow sprays in gas-solid flows
… the fundamental mechanism of evaporating Crossflow spray jets in gas-solid flows. In this study, in addition to a laboratory scale circulating fluidized bed to provide a continuous gas-solid flows, a laser/lamp-light assisted visualization and image analysis system and a computer aided …
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Grain damage studies in modified crossflow dryers
Thesis (M.S.)--Michigan State University. Dept. of Agricultural Engineering, 1973
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LES of Jets and Sprays Injected into Crossflow
… numerically simulate a fluid jet injected into a crossflow of the same or another fluid, respectively. Such flows are encountered in many engineering applications in which cooling or mixing plays an important role, e.g. gas turbine combustors. The jet in crossflow (JICF) is used both for cooling …
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Buoyant Surface Jets Discharged Into a Strong Crossflow
Made available in DSpace on 2014-12-13T19:31:38Z (GMT). No. of bitstreams: 1 7726701.pdf: 9332542 bytes, checksum: dc27a58773336fd530635b20892579cc (MD5) Previous issue date: 1977
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Innovative Transverse Jet Interaction Arrangements in Supersonic Crossflow
… with sonic, normal injection into a supersonic crossflow. Therefore, in application to hypersonic, high-altitude missile maneuvering, the firing of a thruster with such an array would result in both added force and a reduction of the moment usually associated with the pressure field on the …
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Turbulent Simulations of a Buoyant Jet-in-Crossflow
… for a thermally buoyant jet in a stratified crossflow has motivated the studies presented. A computational approach using the incompressible Navier--Stokes equations (NSE) under the Boussinesq approximation is utilized. Temperature and salinity scalar transport equations are utilized in …
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An experimental investigation of transverse jets in supersonic crossflow
… flow features of Transverse Jets In Supersonic Crossflow (TJISC), to present the shear layer vortex shedding frequency and the related controlling parameters, to extract the dominating coherent structures, and to present the mean and fluctuating pressure loads on the wall around the jet port …
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Numerical Investigation of Crossflow Instability on the HIFiRE-5
… of the HIFiRE-5 elliptic-cone forebody to study crossflow-induced transition in hypersonic boundary layers. A resolution study consisting of three grids (30e6, 45e6, and 91e6 points) indicated that the fine grid was sufficiently resolved. Results were largely insensitive to grid resolution over …
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Heat transfer from a circular cylinder in a pulsating crossflow
… well-defined harmonic disturbances in the mean crossflow on heat transfer from a circular cylinder were experimentally determined. Local, time-averaged heat transfer data at constant wall temperature is reported for Reynolds numbers between 3 x 10<sup>4</sup> and 9 x 10<sup>4</sup>. Pulsation …
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CHARACTERIZATION OF THE INITIAL SPRAY FROM A JET IN CROSSFLOW
… on the initial spray from a liquid jet in air crossflow was conducted using Shadowgraphy and Particle Image Velocimetry (PIV) techniques. Momentum ratio and gas Weber number were varied to study their effects on the column trajectory, spray trajectory, breakup locations and spray …
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Transpiration cooling of a cylinder in crossflow : an experimental investigation
… injection on heat transfer from a cylinder in crossflow. The Reynolds number based on cylinder diameter and free stream conditions was varied from 31,200 to 119,000 for the dimensionless injection parameter, f , = (p V /Poo Uoo )//Re(q>range of approximately 0.5 to 2.5; the flow being …
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Laboratory experiments of multi-phase plumes in stratification and crossflow
… m square by 2.4 m deep, glass-walled tank), and crossflow generated by a towed source (using a 28 m long flume with 0.8 m square cross-section). Size spectra of droplets and bubbles were measured using a phase Doppler particle analyzer. To control particle size, sediment was also used; sediment …
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Crossflow stability and transition experiments in a swept-wing flow
An experimental examination of crossflow instability and transition on a 45° swept wing is conducted in the Arizona State University Unsteady Wind Tunnel. The stationary-vortex pattern and transition location are visualized using both sublimating-chemical and liquid-crystal coatings. Extensive …
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Improved prediction methods for finned tube bundle heat exchangers in crossflow
… heat transfer and pressure drop performance of crossflow heat exchangers with finned tubes have concentrated on developing correlations. These correlations have been based on the researchers observations of what geometric parameters may affect the performance, and then dimensionless groups …
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Numerical Simulations of Multi-Confined Jets in Crossflow at Supercritical Pressure
… of two and three confined jets in crossflow (JICF) at supercritical pressure using K-ℇ and K-ꞷ turbulence models as well as the Large Eddy Simulation (LES) method using Siemens CCM+ software. The JICF has many applications such as in gas turbine film cooling system, fuel atomization …
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Generation of crossflow vortices in a three-dimensional flat plate flow
The ability to generate a crossflow vortex pattern on a swept flat plate, that is typical of swept-wing flows, is presented. A swept flat plate with an elliptic leading edge is mounted vertically in the VPI&SU Stability Wind Tunnel opposite to a swept wall-bump; along with floor and ceiling …
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