Essays about: "roughness height"

Showing result 1 - 5 of 27 essays containing the words roughness height.

  1. 1. Local traversability assessment in an unmanned ground vehicle : An analysis of mobility on the UGV Husky

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Kidus Y. Getahun; [2023]
    Keywords : UGV; Husky; Robotics Operating System; Traversability Estimation; Vehicle Dynamics; Elevation Mapping; UGV; Husky; Framkomlighets Bedömning; Fordonsdynamik;

    Abstract : This thesis project aims to learn and understand more about implementing a path planner to the unmanned ground vehicle (UGV), UGV Husky, specifically its traversability algorithm, and investigate how it could be further improved. A surrounding grid is generated around the UGV where each cell contains information connected to its traversability. READ MORE

  3. 2. Investigation of charge injection at electrode-dielectric interface relevant for HVDC cables : Simulation of charge injection and transport dynamics in electrical insulation for HVDC cables

    University essay from Uppsala universitet/Tillämpad mekanik

    Author : Mohammed Mosa; [2023]
    Keywords : BCT model; charge injection; space charge density; electric field distribution; Fowler-Nordheim; Richardson-Schottky;

    Abstract : A bipolar charge transport (BCT) model is used to simulate charge injection and transportdynamics inside insulation material which are used in a high voltage direct current (HVDC)cable. Gaining knowledge about space charge density and electric field distribution in theinsulation material enables minimising charge injection at the metal-insulator interface andavoiding unnecessary energy loss. READ MORE

  4. 3. Effects of surface roughness on spillway flow behaviors

    University essay from Uppsala universitet/Nanoteknologi och funktionella material

    Author : Oday Asalya; Joar Fjällborg; [2023]
    Keywords : CFD; ansys fluent; roughness height; ytråhet;

    Abstract : This thesis examines the impact of spillway surface roughness on discharge capacity determination in hydraulic models. The study combines physical hydraulic modeling in a laboratory with Computational Fluid Dynamics (CFD) modeling using Fluent. READ MORE

  5. 4. Pipe Surface Roughness at Microscale and Discussion of Possible Relation to Flow Properties

    University essay from Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Author : Yiting Qiao; Mahsa Kajbaf Nezhad; [2021]
    Keywords : pipe flow; roughness; microscale; SEM; Technology and Engineering;

    Abstract : Despite decades of intense research, the behavior of water molecule still warrants new research.Water flow through various pipe systems has become a pivotal corner stone of functioning human infrastructure. READ MORE

  6. 5. Tribological and Mechanical Behaviour of 3D Printed Polymeric Bearings

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Sallar Ali Qazi; [2021]
    Keywords : Additive manufacturing; Rapid prototyping; 3D-Printing; Fused Filament Fabrication FFF ; Fused Deposition Modeling FDM ; Tribology; polyoxymethylene POM ;

    Abstract : Plastics contribute 2 GTons to the global carbon footprint, today, several countries have set targets to achieve carbon neutrality. Plastics, being a major contributor to global carbon footprint, would need to be reduced significantly from our daily life to achieve that or a way needs to be devised to recycle them. READ MORE