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Effect of ambient turbulence on mixing of a round jet in cross-flowHuang, Shengcheng, 黃晟程 January 2014 (has links)
published_or_final_version / Civil Engineering / Master / Master of Philosophy
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FLOW NEAR THE OUTLET OF A GEOTHERMAL ENERGY RESERVOIRMurphy, Hugh Donald January 1979 (has links)
No description available.
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Investigation of buoyancy effects on turbulant nonpremixed jet flames by using normal and low-gravity conditionsIdicheria, Cherian Alex, 1977- 07 July 2011 (has links)
Not available / text
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A study of the angular velocity in a liquid induced by a vortex in an emptying containerHartman, James Paul, January 1963 (has links) (PDF)
Thesis (M.S.)--University of Missouri, School of Mines and Metallurgy, 1963. / Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed July 1, 2008) Includes bibliographical references (p. 32).
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A parametric study of rigid body-viscous flow interactionMoorty, Shashi January 1987 (has links)
This thesis presents the numerical solution for two-dimensional incompressible viscous flow over a rigid bluff body which is elastically supported or alternately undergoing a specified harmonic oscillations. Solutions for the related associate flow in which the body is at rest in a two-dimensional incompressible time-dependent viscous flow have also been -obtained. This work is an extension of the work by Pattani [19] to include the effect of a steady far field flow on an oscillating body.
The numerical model utilizes the finite element method based on a velocity-pressure primitive variable representation of the complete Navier-Stokes equations. Curved isoparametric elements with quadratic interpolation for velocities and bilinear interpolation for pressure are used. Nonlinear boundary conditions on the moving body are represented to the first order in the body amplitude parameter. The method of averaging is used to obtain the resulting periodic motion of the fluid. Three non-dimensional parameters are used to completely characterise the flow problem: the frequency Reynolds number Rω , the Reynolds number of steady flow Rℯ₁ and the Reynolds number for time-dependent flow Rℯ₂.
Numerical results are obtained for a circular body, a square body and an equilateral triangular body. A parametric study is conducted for different values of the Reynolds numbers in the viscous flow regime. In all cases, results are obtained for streamlines, streaklines, added mass, added damping, added force and the drag coefficients. The limiting cases of steady flow over a fixed body and an oscillating body in a stationary fluid are checked with known results. Results for the associated flow are also obtained. The transformations derived, between the two associated flows are checked. Good agreement is obtained between the present results and other known results. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate
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Velocity profile measurement in a horizontal fluid layer containing heat sources using the technique of Laser-Doppler anemometryMcGriff, Robert Wayne January 2011 (has links)
Digitized by Kansas Correctional Industries
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A model study of buoyant jetsLien, Hwachii. January 1956 (has links)
Call number: LD2668 .T4 1956 L54 / Master of Science
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Flow development in the initial region of a submerged round jet in a moving environmentOr, Chun-ming., 柯雋銘. January 2009 (has links)
published_or_final_version / Civil Engineering / Master / Master of Philosophy
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Prediction of the effects of aerofoil surface irregularities at high subsonic speeds using the Viscous Garabedian and Korn (VKG) methodEl-Ibrahim, Salah Jamil Saleh January 2000 (has links)
No description available.
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Highly transient axi-symmetric squeeze flowsKrassnokutski, Alexei E. Krass de 04 April 2011 (has links)
The aim of this work was to use experimental, analytical and computational Computational Fluid
Dynamic - CFD methodologies to investigate so-called highly transient axi-symmetric squeeze flows.
These flows occur between two co-axial and parallel discs which are subjected to an impact, arising from
a falling mass, which induces a constant energy squeezing system, as distinct from the traditionally
investigated constant force or constant velocity squeezing systems.
Experiments were conducted using a test cell comprising two parallel discs of diameter 120 mm with a
flexible bladder used to contain fluid. This test cell was bolted onto the base of a drop-weight tester used
to induce constant energy squeeze flows. Glycerine was used as the working fluid, the temperature of
which was appropriately monitored. Disc separation, together with pressures at three radial positions,
were measured throughout the experimental stroke typically less than 10 ms duration. Two additional
pressure transducers at the same radial position as the outermost transducer were also used to monitor
and subsequently correct for minor non-axi-symmetries that arose in the system. Approximately 150
tests were conducted, embracing combinations of drop height from 0.1 to 1 m, drop mass from 10 to 55
kg and initial disc separation from 3 to 10 mm.
Three elementary features were typically observed: a distinct preliminary pressure spike 1 immediately
after impact corresponding to very large accelerations exceeding over 6 km/s2 in some experiments, a
secondary major pressure spike 2 towards the termination of the stroke corresponding to diminishing
disc separations and a bridging region 3 joining the two spikes corresponding to somewhat reduced
pressures. While pressure distributions were observed to be closely parabolic during the major pressure
spike, some uncertainty was present during the preliminary pressure spike, ascribed to sensitivities to
deviations from axi-symmetry, and the likelihood of inertially generated pressures at the edge of the disc.
The former feature appears not to have been reported on in the formal literature.
iii
Four analytical models were considered, invoking the parallel flow assumption in conjunction with the
Navier Stokes equations: an inviscid/inertial model, a viscous model the lubrication approximation, a
quasi-steady linear QSL model and a quasi-steady corrected linear QSCL model. The first two of these
models, on incorporation of measured disc separations, and the derived velocities and accelerations,
achieved acceptable correlations with pressure measurements largely within uncertainty bounds during
the initial impact and towards the end of the stroke, respectively. The QSL model agreed satisfactorily
with measurements throughout the entire duration of the experiment, while the QSCL model, by
incorporating non-linear effects in an approximate linear way, yielded somewhat better correlations. By
invoking the parallel flow assumption, all four models predict a parabolic radial pressure distribution.
Utilizing a hypothetical case in which variations of disc separation, velocity and acceleration were
considered employing similar magnitudes and timescales to those that were measured, outputs of the
QSL model yielded results that correlated closely with CFD predictions, while the QSCL data were
somewhat better. On the basis of the CFD data it was also inferred that, within practical uncertainty
bounds, the parallel flow assumption was valid for the range of disc separation to radius ratios embraced
in the current investigation.
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