Sökning: "ansys"

Visar resultat 1 - 5 av 37 avhandlingar innehållade ordet ansys.

1. 1. Optimering av styrstavsbladets huvuddimensioner med hjälp av FE-programmet ANSYS, LiTH-IKP-Ex-1017

   Författare :Niclas Strömberg; Jönköping University; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

3. 2. Prediction of forced convection heat transfer to Lead-Bismuth-Eutectic

   Författare :Roman Thiele; Henryk Anglart; Martin Rohde; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Lead-bismuth-eutectic; Forced convective heat transfer; Turbulence-modeling; GEN-IV reactors;

   Sammanfattning : The goal of this work is to investigate the capabilities of two different commercial codes, OpenFOAM and ANSYS CFX, to predict forced convection heat transfer in low Prandtl number fluids and investigate the sensitivity of these predictions to the type of code and to several input parameters.The goal of the work is accomplished by predicting forced convection heat transfer in two different experimental setups with the codes OpenFOAM and ANSYS CFX using three different turbulence models and varying the input parameters in an extensive sensitivity analysis. LÄS MER

4. 3. Modelling and Simulation of Reactor Pressure Vessel Failure during Severe Accidents

   Författare :Peng Yu; Weimin Ma; Walter Villanueva; Sevostian Bechta; Florian Fichot; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; RPV failure; thermo-fluid-structure coupling; creep modelling; melt pool heat transfer; severe accident; CFD; FEA; transIVR;

   Sammanfattning : This thesis aims at the development of new coupling approaches and new models for the thermo-fluid-structure coupling problem of reactor pressure vessel (RPV) failure during severe accidents and related physical phenomena. The thesis work consists of five parts: (i) development of a three-stage creep model for RPV steel 16MND5, (ii) development of a thermo-fluid-structure coupling approach for RPV failure analysis, (iii) performance comparison of the new approach that uses volume loads mapping (VLM) for data transfer with the previous approach that uses surface loads mapping (SLM), (iv) development of a lumped-parameter code for quick estimate of transient melt pool heat transfer, and (v) development of a hybrid coupling approach for efficient analysis of RPV failure. LÄS MER

5. 4. Development of Concentrating Photovoltaic-Thermal Solar Collectors

   Författare :João Gomes; Björn O. Karlsson; Mats Rönnelid; Göran Lundgren; Heimo Zinko; Högskolan i Gävle; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solar Energy; Photovoltaic-Thermal PVT ; Concentration; Collector Testing; Silicon Cell Encapsulation; Ray Tracing; Market Survey; String Layout; Prototype Collectors; Solenergi; Fotovoltaisk-termisk PVT ; Koncentration; Solfångarprovning; Inkapsling av kiselceller; Strålgångsberäkning; Marknadsundersökning; Strängdesign; Solfångarprototyper; Hållbar stadsutveckling; Sustainable Urban Development;

   Sammanfattning : Fossil fuels have greatly improved human living standards and saved countless lives. However, today, their continued use threatens human survival, as CO2 levels rise at an unprecedented pace to levels never seen during human existenceon earth. LÄS MER

7. 5. Shear in Concrete Structural Elements Subjected to Dynamic Loads

   Författare :Johan Magnusson; Anders Ansell; Mikael Hallgren; Richard Malm; Jaap Weerheijm; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dynamic load; initial response; shear failure; shear capacity; numerical simulations; bond; shear span; support reactions; Dynamisk last; initial respons; skjuvbrott; skjuvkapacitet; numeriska simuleringar; förankring; skjuvspännvidd; upplagsreaktioner; Civil and Architectural Engineering; Byggvetenskap;

   Sammanfattning : Concrete structural elements subjected to severe dynamic loads such as explosions at close range may cause shear failures. In the Oklahoma City bombing in 1995 two concrete columns on the ground level were reported to have failed in shear. LÄS MER