Essays about: "Transient duration"

Showing result 11 - 15 of 19 essays containing the words Transient duration.

1. 11. Ultrafast Transient coherent Raman Microscopy(TRaM)

   University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

   Author : Eric Nilsson; [2019]
   Keywords : Physics and Astronomy;

   Abstract : The aim of this project was to construct a measurement setup to be able to measure the decoherence time of optical phonons. Optical phonons lose coherence by decaying to intermediate phonons and eventually to acoustic phonons which can carry heat, which is why measuring the coherence time of optical phonons is important to characterizing heat flow on short time scales. READ MORE

3. 12. Transient Dynamics and Core Tunneling in Vertical Spin-Vortex Pairs

   University essay from KTH/Nanostrukturfysik

   Author : Milton Persson; [2019]
   Keywords : Spin-vortex; ultra fast vortex dynamics; milli-Kelvin temperatures; macroscopic quantum tunneling; Spinnvirvel; ultrasnabb virveldynamik; milli-Kelvin temperaturer; makroskopisk kvanttunnling;

   Abstract : Spin-vortices in vertically spaced pairs of thin elliptical Permalloy nanoparticles are investigated. The two vortex cores with parallel out-of-plane magnetization exhibit a strong monopole-like attraction through the spacer much thinner than the core length, thus forming a bound core-core pair. READ MORE

4. 13. Numerical Analysis ofLatent Thermal Energy Storage in a Cavity

   University essay from KTH/Energiteknik

   Author : Robert Olrog; [2017]
   Keywords : ;

   Abstract : Latent Thermal Energy Storage (LTES) has drawn attention because the technology is a simple and cost-efficient method to store large amounts of energy. Latent energy is either stored or released when the material inside the LTES undergoes phase-change. READ MORE

5. 14. Aeroelastic Analysis of a Morphing Wing for Airborne Wind Energy Applications

   University essay from Lunds universitet/Institutionen för energivetenskaper

   Author : Johannes Hall; [2017]
   Keywords : airborne wind energy; fluid structure interaction; gust wind modelling; Technology and Engineering;

   Abstract : The aim of this thesis is to set up a high-fidelity fluid structure interaction (FSI) simulation environment to study the gust load alleviation capability of camber-morphing airborne wind energy (AWE) wings. The simulation environment will enable studying the transient flow phenomena around the wing when encountering wind gusts and gives the possibility of investigating dynamic instabilities. READ MORE

6. 15. Spacecraft dynamic analysis and correlation with test results : Shock environment analysis of LISA Pathfinder at VESTA test bed

   University essay from Luleå tekniska universitet/Rymdteknik

   Author : Beata Iwona Kunicka; [2017]
   Keywords : FEA FEM; finite element analysis; finite element method; mechanical analysis; structural analysis; dynamic analysis; computational dynamic analysis of structures; shock analysis; shock environment; shock test; shock test campaign; spacecraft dynamic analysis; MSC Nastran; MSC Patran; Dynaworks; Shock Response Spectrum; SRS; space engineering; space science and technology; mechanical engineering; structural engineering; analysis optimisation; analysis parametrisation; mechanical wave propagation; shock propagation; damping; hysteretic damping; viscous damping; structural damping;

   Abstract : The particular study case in this thesis is the shock test performed on the LISA Pathfinder satellite conducted in a laboratory environment on a dedicated test bed: Vega Shock Test Apparatus (VESTA). This test is considered fully representative to study shock levels produced by fairing jettisoning event at Vega Launcher Vehicle, which induces high shock loads towards the satellite. READ MORE