Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"Cylinder axis"”.
-
Behavior of Polymer Solutions and Melts in Shearing and Elongational Flow Using Streak Photography and Birefringence
… fluid undergoing flow past a radially oriented cylinder in both a converging and uniform flow field. The glycerin and polyacrylamide solutions are found to follow Newtonian and power law behavior, respectively, in Poiseuille flow between parallel plates and the lubrication approximation was …
-
Finite Coupled Torsion and Inflation of Functionally Graded Mooney-Rivlin Cylinders with and without Residual Stresses
… of functionally graded Mooney-Rivlin circular cylinders, focusing on how radial grading of material moduli can be beneficially utilized. We investigate the finite deformations caused by pressures applied to the bounding surfaces and axial loads or twisting moments on the end faces. We also …
-
Automated segmentation, detection and fitting of piping elements from terrestrial LIDAR data
… raw LIDAR point clouds as input and generating cylinder parameter estimates for pipe segments as the output, which could then be used to produce computer aided design (CAD) models of pipes. The processing chain consists of three stages: (1) segmentation of LIDAR point clouds, (2) detection and …
-
Field induced orientation of semicrystalline and non-crystallne block copolymer microdomain patterns
… crystalline lamellae is achieved parallel to the cylinder axis, completely suppressing spherulite formation. Microdomain structures of block copolymers are also controlled in thin films by directional solidification of a crystallizable solvent. This new method is based on the use of crystalline …
-
Planar and oblique shock wave interaction with a droplet seeded gas cylinder
… interaction with an initially diffuse heavy-gas cylinder seeded with submicron-scale glycol droplets. Unlike most earlier studies, the investigation covers not just a quasi-two-dimensional geometry, where the axis of the cylinder is parallel to the plane of the shock, but also the oblique …
-
Disclinations in Homogeneously Deformed Nematic Elastomers
… homogenous deformation of a right circular cylinder wherein each circular cross-section of the specimen is deformed into an ellipse. We explore the possibility of the existence of disclinations when the molecular conformation is (i) uniaxial and (ii) biaxial. In either scenario, numerical …
-
Boundary Layer Development in Laminar Swirl Flow Inside a Circular Pipe.
… that the fluid, moving in the direction of the axis of the pipe, enters the pipe with an axial component which is practically constant over the whole cross section. A boundary layer initially of zero thickness is formed inside the pipe, and this layer increases in thickness downstream until its …
-
Numerical Solutions for Two- and Three-Dimensional Non-Reacting Flowfields in an Internal Combustion Engine
… coordinates for three-dimensional non-axisymmetric problems when the centerline is included in the region of interest are discussed. A new method which avoids the coordinate- singularity problems associated with such cases is presented and used to obtain the first known four-stroke …
-
Vortex-induced vibration of a linearly-sprung cylinder with nonlinear energy sinks
… attachment to a linearly-sprung circular cylinder undergoing rectilinear vortex-induced vibration (VIV) normal to the mean flow. The attachment is a nonlinear energy sink (NES). The essentially nonlinear coupling between the rectilinear motion of the cylinder and the motion of the NES …
-
Determining the parameters of cylinders using digital photogrammetry for application to pipe measurement in industrial plants
… which represent the silhouette edges of the cylinder. The use of photogrammetry based on lines avoids some of the shortcomings of conventional point-based photogrammetry. It is not necessary to identify conjugate points in images, nor is it even necessary for overlapping images of the …
-
Pattern Formation in Rotating Fluid Systems under the Influence of Magnetic Fields
… instance by an electrical current through the cylinder axis. The motivation of this study has come originally from the geophysical context. This setup is hoped to capture some important features of convection patterns in rotating stars and planets near the equatorial regions. The problem is …
-
The Response of a Structural Target to an Explosive Charge Incorporating Foreign Objects: A Numerical Study
… a non-uniform velocity distribution along the cylinder axis. Overall, there was a good agreement between the 2D model and the experimental measurements, including the distribution of the lower velocity values near the cylinder edges. The ball bearing velocity - crater depth correlation was also …
-
Evaluation of an Objective Visual Image Quality-Based Method to Identify Spectacle Corrections for Individuals with Keratoconus
… based on visual acuity, using a Jackson cross cylinder to determine cylinder axis and power when appropriate) beginning from an autorefractor measurement when possible. To assess the relative performance of the two methods of identifying refraction, visual acuity and subjective preference were …
-
An Experimental Spatio-Temporal Analysis of Separated Flows Over Bluff Bodies Using Quantitative Flow Visualization
… of a low-aspect ratio, surface-mounted, circular cylinder piercing a free surface. The asymmetry of the end conditions combined with the natural unsteadiness of the vortex shedding generates a very complex flow filed which is difficult to study with conventional methods. By employing the …