Sökning: "Complex modal analysis"
Visar resultat 1 - 5 av 35 avhandlingar innehållade orden Complex modal analysis.
1. Global stability analysis of complex fluids
Sammanfattning : The main focus of this work is on the non-Newtonian effects on the inertial instabilities in shear flows. Both inelastic (Carreau) and elastic models (Oldroyd-B and FENE-P) have been employed to examine the main features of the non-Newtonian fluids; shear-thinning, shear-thickening and elasticity. LÄS MER
2. Modal analysis and synthesis in transient vibration and structural optimization problems
Sammanfattning : .... LÄS MER
3. Stability analysis and inertial regimes in complex flows
Sammanfattning : In this work we rst study the non-Newtonian effects on the inertial instabilities in shear flows and second the inertial suspensions of finite size rigid particles by means of numerical simulations.In the first part, both inelastic (Carreau) and elastic models (Oldroyd-B and FENE-P) have been employed to examine the main features of the non-Newtonian fluids in several congurations; flow past a circular cylinder, in a lid-driven cavity and in a channel. LÄS MER
4. Hybrid and Dynamic Substructuring Methods for Energy Flow Analysis
Sammanfattning : Modeling techniques and solution tools to analyze the dynamic and vibro-acoustic behavior of complex built-up structures are matters of increasing interest, especially for thin walled structures as in transportation vehicles, such as automobiles, trucks, trains and aircraft. In structures like these, the reduction of cost, weight, sound and vibration levels are primary issues for research and development. LÄS MER
5. Fluid-conveying beams in transverse vibration
Sammanfattning : .... LÄS MER