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 20 of 1399 for “"viscous"”.
-
Controlling Viscous Fingering
Viscous fingering occurs when one fluid displaces another fluid of a greater viscosity in a porous medium or a Hele-Shaw cell. Linear stability analysis is used to predict methods of suppressing instability. Then, experiments in which nonlinear growth dominates pattern formation are analysed to …
-
Viscous fluid sheets
… a general theory for the dynamics of thin viscous sheets. Employing concepts from differential geometry and tensor calculus we derive the governing equations in terms of a coordinate system that moves with the film. Special attention is given to incorporating inertia and the curvature …
-
Viscous flow past plates
… For the oscillating, we compared the viscous simulation using FDMHS with an inviscid vortex sheet method. Both are in excellent agreement at early times. There are difference at later times. most likely caused by wall vorticity which is not accounted for by the vortex sheet model. The …
-
Catenaries in Viscous Fluid
… moving with a uniform velocity and axial flow in viscous fluid. The string is acted upon by local, anisotropic, linear drag forces and a uniform body force. Generically, the configurations of the string are planar, and we provide analytical expressions for the equilibrium shapes of the string as a …
-
Instability of electrified viscous films
… der Waals and electrically induced forces for a viscous incompressible fluid. The film is assumed to be sufficiently thin, and the surface tension and electrically induced forces are large enough that gravity can be ignored to the leading order. Our target is to analyse the nonlinear stability of …
-
A viscous-viscoelastic creep model
… theory were compared with the creep data. In the viscous-viscoelastic creep model the total strain was separated into four strain components: elastic, time-independent plastic, time-dependent-recoverable viscoelastic, and time-dependent-nonrecoverable viscous strain. In this project, only the …
-
Viscous liquids in bubble columns
… dissertation is concerned with studies of highly viscous Newtonian and non-Newtonian liquids in bubble columns with, and without, draft tubes. The importance of the parameters influencing bubble column reactors is discussed with reference to previous work. The shapes and rise velocities of single …
-
Adaptation methods for viscous flows
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1989.
-
Viscous fingering instabilities and gravity currents.–—
… A well-known example of this occurs when a less viscous fluid displaces a more viscous immiscible fluid either in a porous medium or in a Hele-Shaw cell, which is commonly referred to as the Saffman–Taylor instability. There are three related problems studied in this thesis: a single-layer …
-
Particle Interactions in Slow Viscous Flows
Made available in DSpace on 2014-12-10T22:48:25Z (GMT). No. of bitstreams: 1 7500412.pdf: 3394711 bytes, checksum: 297e27e1005fca6e3ace18bde0b76cc0 (MD5) Previous issue date: 1974
-
Viscous streaming-enhanced inertial particle transport
… to fulfill these wide range of tasks is viscous streaming, a non-linear effect characteristic of the scales above. In this thesis, we first show that numerical simulations based on the Remeshed Vortex Method (RVM) can accurately and efficiently capture viscous streaming dynamics. We test …
-
Contact and coalescence of viscous drops
… we consider theoretically the flow in two viscous drops with inertia either side of this topological transition. The deformation of drops prior to contact sets the initial shape of the drops for the subsequent coalescence. We consider a mechanism for contact between nearby, effectively …
-
Wrinkling and sagging of viscous sheets
… the wrinkling and sagging behavior of thin viscous Newtonian sheets and filaments motivated by analogous scenarios in elasticity. These problems involve dynamic free boundaries and geometric nonlinearities but use simple physics. The first problem examined concerns an annular viscous sheet …
-
Calendering of an elastic-viscous material
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1955.
-
Viscous-inviscid interactions of dense gases
The interaction of oblique shocks and oblique compression waves with a laminar boundary layer on an adiabatic flat plate is analyzed by solving the Navier-Stokes equations in conservation-law form numerically. The numerical scheme is based on the Beam and Warming’s implicit method with approximate …
-
Laminar viscous resuspension in two-dimensional channels
The laminar viscous resuspension of sphere particles in two-dimensional channel with gravity and electrostatic effects is studied numerically. The constitutive equation for particles include the shear-induced diffusion flux, gravitational sedimentation flux and electro-static diffusion flux. In …
-
Numerical Solution of Plane Viscous Shock Reflections
Made available in DSpace on 2014-12-09T22:17:27Z (GMT). No. of bitstreams: 1 6604289.pdf: 2394133 bytes, checksum: 41e29f0a83e0729fb70c97b229c41ac7 (MD5) Previous issue date: 1965
-
Effects of shape geometry in viscous streaming
Viscous streaming flows generated by objects of constant curvature (circular cylinders, infinite plates) have been well understood. Yet, characterization and understanding of such flows when multiple body length- scales are involved has not been looked into, in rigorous detail. We propose a …
-
Viscous streaming in 3D and its applications
… milli-meter scale, a second-order fluid effect—viscous streaming—becomes relevant as a label-free and contactless method for such applications. In this thesis, we extend an existing 3D numerical flow–structure interaction (FSI) solver based on Remeshed Vortex Method (RVM) for the simulation and …
-
Viscous and diffusive effects in magnetoplasmadynamic flows
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
Page 1 of 70