Sökning: "Air Cavity design"

Visar resultat 6 - 10 av 12 uppsatser innehållade orden Air Cavity design.

  1. 6. CFD Analysis of Heat Transfer in an Innovative Facade System

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Christoffer Bågholt; [2018]
    Nyckelord :Computational Fluid Mechanics; Heat Transfer; Building Physics;

    Sammanfattning : New innovative façade systems that are well thought out, rational, sustainable and energy efficient are needed for renovation of old buildings to drastically reduce the heat losses through walls and to improve indoor conditions. In order to achieve the above mentioned goal, new innovative modular systems that can be mounted on site with ease are an interesting alternative. LÄS MER

  3. 7. CFD Analysis of Pressure Instabilities in Stator-Rotor Disc Cavity Systems

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Pedro Santiago Parras Blázquez; [2017]
    Nyckelord :;

    Sammanfattning : The continuous demand to improve turbine performance has led manufactures to focus on aspects that have been previously considered of secondary importance such as the secondary air system. The purpose of this system is to cool the components and prevent ingestion of hot gas into the stator-rotor cavity that could lead to low frequency pressure fluctuations called Cavity Flow Instabilities. LÄS MER

  4. 8. Layout of spillway aerator air ventsand its effect on air supply

    Master-uppsats, KTH/Mekanik

    Författare :Gustav Daggenfelt; [2017]
    Nyckelord :;

    Sammanfattning : Chute aerators are constructed to protect spillways from cavitation damage.They function by launching the water ow as a jet and supplying airunderneath since having air entrained into the water is an eective way tomitigate cavitation. LÄS MER

  5. 9. 1D Turbine Design Tool Validation and Loss Model Comparison: Performance Prediction of a 1-stage Turbine at Different Pressure Ratios

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Jonas Persson; [2015]
    Nyckelord :gas turbine; 1D design tool; validation; loss models; performance prediction; pressure ratio; purge flow;

    Sammanfattning : This work concerns the validation of two 1D Turbine Design Tools, AXIAL by Concepts NREC and TML by GKN Aerospace, and is purely computational. By using the KTH Test Turbine as a reference frame, these two software programs were set up to simulate its performance, and the results consequently validated against existing experimental data from the turbine. LÄS MER

  7. 10. Numerical Study on the Thermal Performance of a Novel Impinging Type Solar Receiver for Solar Dish-Brayton System

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Haoxin Xu; [2013]
    Nyckelord :Solar receiver; Jet impingement; Conjugate heat transfer; Computational fluid dynamics;

    Sammanfattning : An impinging type solar receiver has been designed for potential applications in a future Brayton Solar Dish System. The EuroDish system is employed as the collector, and an externally fired micro gas turbine (EFMGT) has been chosen as the power conversion unit. LÄS MER