Sökning: "transient pipe flow"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden transient pipe flow.

  1. 1. The Investigation and Modeling of the interaction between Paperboard Clippings in a Pipe Flow

    Master-uppsats, Lunds universitet/Institutionen för Energivetenskaper

    Författare :Lea Christierson; [2021]
    Nyckelord :Fluid-structure interaction; paperboard material modeling; transient pipe flow; overset mesh; image analysis; Technology and Engineering;

    Sammanfattning : In the manufacturing process of Tetra Pak packages, holes are cut out of the paperboard for straws and caps. The left-over paperboard clippings, called confetti, need to be evacu- ated from the machine. However, this evacuation process has proven to cause problems due to jams arising as the confetti get stuck in joints and along the pipe walls. LÄS MER

  2. 2. Dynamic Modeling of Target's Cooling Systems

    Master-uppsats, Lunds universitet/Institutionen för Energivetenskaper

    Författare :Maximilian Cahlin; [2021]
    Nyckelord :Dynamic modeling; Modelica; Dymola; Fluid mechanics; Thermodynamics; Technology and Engineering;

    Sammanfattning : The thermal energy generated from the spallation process in the ESS facility must be cooled by cooling systems in order to ensure safe operation of the facility. It is of interest to understand what operating conditions of the cooling systems will ensure this safety for both stationary conditions and transient events. LÄS MER

  3. 3. 3D-modeling of swing check valve with connection to dynamic behavior used in system studies

    Master-uppsats, Lunds universitet/Institutionen för Energivetenskaper

    Författare :Christoffer Björk; [2015]
    Nyckelord :Swing check valve; fluid mechanics; pressure surge; waterhammer; Fluent; Technology and Engineering;

    Sammanfattning : This Master’s Thesis is the result of the collaboration between The Technical Faculty of Lund University and TÜV NORD Sweden AB. Focus has been directed towards the nuclear industry where this thesis is one of several other Master’s Theses regarding the dynamic modeling of a swing check valve. LÄS MER

  4. 4. Krafter på rörsystem vid transient flöde : En jämförelse mellan RELAP5 och Fluent

    Kandidat-uppsats, Högskolan i Gävle/Avdelningen för bygg- energi- och miljöteknik

    Författare :Kalle Kauppi; [2014]
    Nyckelord :RELAP5; Fluent; Flödessimulering; Reaktionskrafter;

    Sammanfattning : At Forsmarks Kraftgrupp AB (FKA) forces on pipe systems due to transient flow are frequently calculated as a step to verify their structural integrity. In nuclear industries these forces are often calculated with a one dimensional thermal-hydraulic analysis-code called RELAP5. LÄS MER

  5. 5. Instabilities in Pulsating Pipe Flow of Shear-Thinning and Shear-Thickening Fluids

    Master-uppsats, Linköpings universitet/Linköpings universitet/Mekanisk värmeteori och strömningsläraTekniska högskolan

    Författare :Sasan Sadrizadeh; [2012]
    Nyckelord :Stability; Pulsatile pipe; Transient Growth; Floquet Multiplier; Modal and non-Modal Stability;

    Sammanfattning : In this study, we have considered the modal and non-modal stability of fluids with shear-dependent viscosity flowing in a rigid straight pipe. A second order finite-difference code is used for the simulation of pipe flow in the cylindrical coordinate system. The Carreau-Yasuda model where the rheological parameters vary in the range of 0. LÄS MER