Sökning: "cylindrical geometries"
Visar resultat 1 - 5 av 18 avhandlingar innehållade orden cylindrical geometries.
1. Waveguide slot antennas with cylindrical outer structures
Sammanfattning : .... LÄS MER
2. Direct numerical simulation of turbulent flow in plane and cylindrical geometries
Sammanfattning : This thesis deals with numerical simulation of turbulentflows in geometrically simple cases. Both plane and cylindricalgeometries are used. The simplicity of the geometry allows theuse of spectral methods which yield a very high accuracy usingrelatively few grid points. A spectral method for planegeometries is implemented on a parallel computer. LÄS MER
3. Development of Numerical Methods for Turbulent Flow in Complex Rotating Systems
Sammanfattning : A computer code has been developed to predict three-dimensional incompressible turbulent flow in complex rotating geometries. The application in mind is turbomachinery in general. However such a code is able to treat a large number of problems in fluid mechanics. LÄS MER
4. Mechanical impedance gauge based on measurement of strains on a vibrated or impacted rod
Sammanfattning : A mechanical impedance gauge based on measurement of strains at two cross-sections of a slender rod is studied. The gauge rod is in contact with the object at one end while the other end is excited harmonically with a vibrator or transiently through the impact of a hammer. LÄS MER
5. Analytical and Numerical Investigations of Steady and Unsteady Turbulent Swirling Flow in Diffusers
Sammanfattning : Swirling flows are found in many technical applications, e.g. turbines, pumps, fans, compressors and combustors. The objective of the present work is to acquire an understanding of the physics of swirling flow in general and unsteady swirling flow in draft tubes of water turbines in particular. LÄS MER