Essays about: "geometry pre-processing"

Showing result 1 - 5 of 9 essays containing the words geometry pre-processing.

1. 1. Streamlining 3D City Modeling for Urban Flow Simulations by Automatic Integration of Multisource Topography

   University essay from Umeå universitet/Institutionen för fysik

   Author : Klara Lindroth; [2023]
   Keywords : automatic 3D city models; surface reconstruction; geometry pre-processing; CFD; OSM height attributes;

   Abstract : In the workflow of computational fluid dynamics, geometry preparation is commonly the most time-consuming step. For a fast CFD simulation, automatic surface reconstruction to obtain 3D city models for a chosen area is essential. To address this need, a literature study was conducted to map available data suitable for 3D city models. READ MORE

3. 2. Automatic processing of LiDAR point cloud data captured by drones

   University essay from Linköpings universitet/Institutionen för datavetenskap

   Author : Leon Li Persson; [2023]
   Keywords : machine learning; supervised learning; random forest; point cloud segmentation;

   Abstract : As automation is on the rise in the world at large, the ability to automatically differentiate objects in datasets via machine learning is of growing interest. This report details an experimental evaluation of supervised learning on point cloud data using random forest with varying setups. READ MORE

4. 3. Method Development for Heat Transfer Predictions in Channel Flows : An efficient CFD approach for ribbed stationary channels

   University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

   Author : Martin Leskovec; [2016]
   Keywords : CFD; roughened channels; heat transfer coefficient; HTC; Nu number; CAE process;

   Abstract : Gas turbines are today used in numerous industrial and aeronautical applications. To increase the specific power output and efficiency, a high turbine inlet gas temperature is desired. The high temperature leads to the need of cooling critical components in the hot gas path. READ MORE

5. 4. Offset modeling of shell elements : A study in shell element modeling using Nastran

   University essay from Linköpings universitet/Mekanik och hållfasthetslära

   Author : David Klarholm; [2016]
   Keywords : Offset shell elements; finite element; Nastran; shell element modeling; Rigid body connection; Rigid links; Kirchhoff shells; Multipoint constraint;

   Abstract : At Saab Aerostructures they are manufacturing a lot of parts for Airbus and Boeing. When these components are investigated using finite element analysis four-node Kirchhoff shell elements and a very fine mesh is often used. READ MORE

6. 5. CFD-analysis of buoyancy-driven flow inside a cooling pipe system attached to a reactor pressure vessel

   University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära; Linköpings universitet/Tekniska högskolan

   Author : Jens Petersson; [2014]
   Keywords : CFD; OpenFOAM; LES; nuclear reactor pressure vessel;

   Abstract : In this work a cooling system connected to a reactor pressure vessel has been studied using the CFD method for the purpose of investigating the strengths and shortcomings of using CFD as a tool in similar fluid flow problems within nuclear power plants. The cooling system is used to transport water of 288K (15°C) into a nuclear reactor vessel filled with water of about 555K (282°C) during certain operating scenarios. READ MORE