Sökning: "Dymola"

Visar resultat 1 - 5 av 71 uppsatser innehållade ordet Dymola.

  1. 1. 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. 2. System-Oriented Dynamic Modelling and Power Consumption Simulationfor an Industrial Chiller Plant

    Master-uppsats, KTH/Energiteknik

    Författare :Yanan Zhang; [2020]
    Nyckelord :;

    Sammanfattning : Nowadays, the amount of energy consumed by Heating, Ventilation and Air Conditioning (HVAC) systemsposes threats to the improvement of global environment. Hence people have been dedicated to thedevelopment of energy-saving retrofit projects via optimized simulation in these chiller plants. LÄS MER

  4. 3. Modelling of a Generic Aircraft Environmental Control System in Modelica

    Master-uppsats, Linköpings universitet/Fluida och mekatroniska system

    Författare :Sabin Poudel; [2019]
    Nyckelord :ECS; Environmental Control System; Modelica; Object oriented Modeling; TTECCS library; bootstrap system;

    Sammanfattning : This thesis documents the modelling of generic Environmental Control System(ECS) of an aircraft in Modelica by utilizing components from free version of theTTECCS (Technical Thermodynamic Environmental Control and Cooling Systems) library. In doing so, components used for developing ECS from the TTECCS library are mathematically verified with theoretical formula in MATLAB. LÄS MER

  5. 4. Methods for including stiffness parameters from reduced finite element models in simulations of multibody systems

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fasta tillståndets elektronik

    Författare :Christoffer Fjellstedt; [2019]
    Nyckelord :model order reduction; lumped element methods; lumped parameter methods; robotics; robot mechanics; simulations; constrained multibodies; Dymola;

    Sammanfattning : Two methods using lumped element (lumped parameter) methods to model flexible bodies have been presented. The methods are based on the concept of using a Guyan reduced stiffness matrix to describe the elasticity of a body. LÄS MER

  7. 5. Improved control strategies for primary frequency control in Swedish combined heat and power plants

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Gustav Sondell; [2019]
    Nyckelord :Technology and Engineering;

    Sammanfattning : A model of the Swedish power plant Mälardalen Energi, developed by Solvina AB was simulated in Dymola with different types of control strategies in order to evaluate if they could improve the operational flexibility of the plant and, thus, its ability to deliver frequency control to the Swedish power grid. Several different control strategies and process modifications were tested and compared to previous simulations done by Solvina. LÄS MER