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Showing 1 to 20 of 268 for “"Velocity field"”.
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Bubble migration in a velocity field
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1963
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Improving the Three Dimensional, Structural Velocity Field Reconstruction Process with Computer Vision
This research presents improvements to the velocity field reconstruction process achieved through computer vision. The first improvement of the velocity reconstruction process is the automation of the scanning laser Doppler vibrometer (SLDV) pose procedure. This automated process results in …
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Turbulent Velocity-Field Structure in a Round Jet and Its Relation to Fluctuating Pressure-Fields
Made available in DSpace on 2014-12-11T17:26:11Z (GMT). No. of bitstreams: 1 7500464.pdf: 10583945 bytes, checksum: 41d8db0055a47e033e34aea0c60e2d34 (MD5) Previous issue date: 1974
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Stress- and velocity-field evolution in viscoelastic planar contraction flow dc by Lars Herbert Genieser.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1997.
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Empirical mode decomposition applied to planar and volumetric velocity field measurements of a supersonic separated flow
The supersonic separated flowfield aft of a blunt-faced cylinder aligned with the freestream is highly complex such that a technique able to identify instantaneous turbulent structure within it is valuable. In this study, multi-dimensional extensions of fast and adaptive empirical mode …
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The horizontal velocity field in southern California from a combination of terrestrial and space-geodetic data
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1993.
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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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GPS Velocity Field In The Transition From Subduction To Collision Of The Eastern Sunda And Banda Arcs, Indonesia
… years for many key stations. The resulting GPS velocity field for the active Banda arc-continent collision reveals: 1) several mostly rigid crustal blocks exist in the transition from subduction to collision, 2) relative to an Asian reference frame, most of these blocks move in the same …
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Extracting the Rotational Degrees of Freedom From a Reconstructed Three-Dimensional Velocity Field Along With an Analytical Demonstraton and a Proposed Method for Experimental Verification
… freedom from a reconstructed three-dimensional velocity field has been developed. To extract the angular velocities the curl of the translational velocities must be performed. The three-dimensional velocity field is to be equally spaced so that the DFT-IDFT technique of taking partial …
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Closure Modeling for Accelerated Multiscale Evolution of a 1-Dimensional Turbulence Model
… perform super-resolution reconstruction of the velocity field from lower-dimensional energy spectrum data, enabling seamless transitions between fine and coarse levels of description. The proposed multiscale-machine learning framework significantly accelerates the computation of the …
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A Numerical Study of Continuous Data Assimilation for the 2D-NS Equations Using Nodal Points
… In this context, observations of the Eulerian velocity field given at a finite resolution of nodal points in space may be used to recover the exact velocity field over time. We also consider nodal measurements of the vorticity field and stream function. The main difference between this new …
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Application of Finite-State Wake Models to Rotors Re-entering Their Own Wake
… the Peters-Morillo wake model to determine the velocity field on and above the helicopter rotor and the Peters-Fei model to compute the velocity field below the rotor. The specific case of nonzero net thrust was evaluated under assumptions of axial flow and potential flow theory. Results consist …
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Non-Hydrostatic Models For Wave Propagation, Breaking, And Run-Up
… momentum equations are solved for a provisional velocity field, and then the non-hydrostatic pressure is obtained by satisfying the divergence-free velocity field condition, subsequently the velocity field is corrected by the non-hydrostatic pressure. Finally the free surface elevation is …
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Mesospheric Kelvin-Helmholtz instability
… of a region of constant vorticity to compute the velocity field. The velocity field is used to transport initial contours representing the vorticity boundary and lines of constant scalar. The nonlinear instability is found to produce thin regions of large scalar gradient which wind about a …
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Visualizing internal wave generation by finite cylinder oscillations using stereo particle image velocimetry
… effects by the production of an out-of-plane velocity field as the cylinder span is decreased. Four cylinders are used. Stereoscopic PIV is utilized for flow visualization and velocity field quantification of the three-dimensional internal wave field evolution. This data is analyzed to …
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Geometrical formulation and traveltime computation in heterogeneous layered media
… subject of seismic traveltime computation. The velocity field is represented by an arbitrary distribution of rectangular or square cells. The cells with an interface crossed are represented by two non-rectangular cells. Each cell is assigned a constant velocity. A geometrical approach is …
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Jet/Wall Interaction: An Experimental Study with Applications to VSTOL Aircraft Ground Effects
The flow field of a twin jet impinging on ground plane with and without free-stream and at low jet-height-to-diameter ratios was investigated using the Particle Image Velocimetry (PIV) technique. Detailed, time-averaged flow field data are obtained via the high-resolution and the high-sampling rate …
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