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Showing 1 to 20 of 58 for “"non-axisymmetric"”.
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Three-Dimensional Non-Axisymmetric Anisotropic Stress Concentrations
Unified explicit analytical solutions for the (non-axisymmetric) first and second boundary value problems of elasticity theory for a spheroidal cavity embedded in a transversely isotropic medium are presented. The analysis is based upon solutions of the homogeneous displacement equations of …
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Design of a non-axisymmetric stator for improved propeller performance
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering and Dept. of Mechanical Engineering, 1987.
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Global modeling of non-axisymmetric disruptions and halos currents in tokamaks
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1997.
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Eddy shedding from non-axisymmetric, divergent anticyclones with application to the Asian Monsoon anticyclone
… near the tropopause, the dynamics are strongly nonlinear. An alternative explanation, which is consistent with the nonlinear nature of the flows, involves the shedding of vortices from the directly forced monsoon anticyclone. The vortices, or eddies, are capable of drifting to the far field to …
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Enhanced Heat Transfer Performance by Shape Optimization of a Non-axisymmetric Droplet Evaporating on a Heated Micropillar
… Transfer Performance by Shape Optimization of a Non-axisymmetric Droplet Evaporating on a Heated Micropillar</p> <p>By</p> <p>Haotian Wu</p> <p>Department of Mechanical Engineering and Materials Science</p> <p>Washington University in St. Louis, 2019</p> <p>Research Advisor: Professor Damena …
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An Approximate Finite-Element Method of Stress Analysis of Non-Axisymmetric Bodies With Elastic-Plastic Material Behavior
Made available in DSpace on 2014-12-14T04:42:05Z (GMT). No. of bitstreams: 1 8004169.pdf: 3939092 bytes, checksum: c62798484346ea9cbe97d14c33327385 (MD5) Previous issue date: 1979
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Axisymmetric and non-axisymmetric modes of instability for flow between rotating cylinders with a transverse pressure gradient
… investigations of this problem have assumed axisymmetric disturbances and that the critical mode of instability was of a stationary cellular motion. This investigation has not been restricted to this assumption but considered three conditions: (1) Assuming axisymmetric disturbances imposed on …
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On the Evaluation of Common Design Metrics for the Optimization of Non-Axisymmetric Endwall Contours for a 1-stage Turbine Rotor
… between the blades on the hub or shroud, non-axisymmetric endwall contouring is a reasonably recent technique which relaxes this constraint, and allows the geometry of the endwalls to depart from that of a plain cylinder. Although a number of studies have shown non-axisymmetric endwall …
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Modeling the performance of the piston ring-pack with consideration of non-axisymmetric characteristics of the power cylinder system in internal combustion engines
… in internal combustion engines. Because of non-axisymmetric characteristics of the power cylinder system, the performance of a ring varies along its circumference. Investigating these variations is of great interest for developing advanced ring-packs, but is out of the capabilities of the …
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Capillary flows in flexible structures
… to collapse and coalesce spontaneously through non-axisymmetric buckling, and develop criteria for the initial deformation and complete collapse of a circular tube under capillary pressure. Experimental results are presented for capillary rise and evaporation of a liquid in a flexible tube. …
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High bandwidth rotary fast tool servos and a hybrid rotary/linear electromagnetic actuator
… lathe) to allow generating free-form non-axisymmetric or textured surfaces on a workpiece. A rotary fast tool servo produces an in-and-out motion of the tool relative to a workpiece by swinging the tool along an arc having a fixed radius. The rotary fast tool servos developed in this …
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An analytical and experimental investigation of the longitudinal vibrational response of an empty and unpressurized Agena-B vehicle
… classical longitudinal. modes of the structure. Non-axisymmetric shell response (shell vibration modes) was noted extensively during the experimental tests. Comparison of the analytical and results indicates that a one-dimensional analytical model gave good results in comparison with experimental …
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Stress reduction in a plate with a hole by applied induced strains
… is the radius of the hole. It was found that the axisymmetric applied induced strains could reduce the stress concentration factor (SCF) from 3 to 2. With non-axisymmetric applied induced strain distribution the SCF could be reduced to 1.45. Numerical optimizations based on finite element …
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The Effect of Endwall Contouring On Boundary Layer Development in a Turbine Blade Passage
… increased part temperatures. Three-dimensional (non-axisymmetric) contouring of the endwall surface has been shown to reduce aerodynamic losses, but the effect of the contouring on endwall heat transfer is not well understood. This research focused on understanding the general flow physics of …
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Effects of blade damage on low pressure ratio fan windmill aerodynamics
… fan, as well as fans with different types of axisymmetric and non-axisymmetric damage. Steady pressure measurements are used to characterise the windmill operating point, and hot-wire measurements are used to resolve the rotor blade-to-blade flow field and investigate the effects of …
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Thermomechanical Stability of Automotive Clutches and Brakes
… increasing thermal loads constantly result in axisymmetric buckling modes. When the maximum values of thermal loads were located at the medium radii of the models, the non-axisymmetric modes became dominant. The buckling mode and buckling temperature of the model in which the profile of thermal …
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Zonal flows in accretion discs and their role in gravito-turbulence
… self-sustenance, a compressible non-linear spectral code (dubbed CASPER) was developed from scratch in C; its equations and specifications are laid out in Chapter 3. In Chapter 4 an ideal (no viscosities or cooling) linear stability analysis to non-axisymmetric perturbations is …
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On the Dynamics of Noncircular Accretion Discs
… disc is of a geometrically thin, nearly axisymmetric, fluid flow undergoing supersonic circular motion and slowly accreting due to angular momentum transport by the disc turbulence. There are, however, strong theoretical and observational grounds for considering non-circular motion in …
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Formation of polymer nanofibers from electrified fluid jets
… has been attributed to the splaying phenomenon, in which a single jet splits into multiple smaller jets due to radial charge repulsion. Using high-speed photography and an aqueous solution of poly(ethylene oxide) as a model fluid, it was shown that the jet does not splay but instead …
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