Sökning: "Harmonic Balance"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden Harmonic Balance.

  1. 1. Tänk på döden : en undersökning av minneslunden som helande plats i möte med den multifunktionella kyrkogården

    Master-uppsats, SLU/Dept. of Landscape Architecture, Planning and Management (from 130101)

    Författare :Ellen Sperr; [2023]
    Nyckelord :minneslund; kyrkogård; gestaltning; multifunktionalitet;

    Sammanfattning : During the last couple of years there has been articles in the news about people, around Sweden, using our cemeteries for recreational purposes. There have been people drinking beer, sledding and having picnic and cities that have defined cemeteries as green areas to be able to fulfil the environmental goals in a new neighbourhood. LÄS MER

  3. 2. Power and Energy Quality Optimization of a Battery Validation Facility : A case study of mapping the power profile of a battery cell testing facility

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Joakim Wahlund; [2020]
    Nyckelord :;

    Sammanfattning : With Northvolt’s aggressive plan to establishEurope’s largest battery factory in northern Sweden, the needto build a pilot plant to demonstrate the possibilities of thecompany was needed. Quality, performance and cycle-life arekey factors customers value particularly high when purchasingbatteries, thus, a need for validating these parameters emerges. LÄS MER

  4. 3. Numerical analysis of aerodynamic damping in a transonic compressor

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Vincenzo Stasolla; [2019]
    Nyckelord :transonic compressor; flutter; vibration; CFD; transonic kompressor; fladder; vibration; CFD;

    Sammanfattning : Aeromechanics is one of the main limitations for more efficient, lighter, cheaper and reliable turbomachines, such as steam or gas turbines, as well as compressors and fans. In fact, aircraft engines designed in the last few years feature more slender, thinner and more highly loaded blades, but this trend gives rise to increased sensitivity for vibrations induced by the fluid and result in increasing challenges regarding structural integrity of the engine. LÄS MER

  5. 4. AERODYNAMIC FORCING & DAMPING COMPUTATIONS IN A TRANSONIC AXIAL TURBINE OF A TURBOCHANRGER USING TIME & FREQUENCY DOMAIN FLOW TRANSFORMATION TECHNIQUES

    Master-uppsats, KTH/Energiteknik

    Författare :Aravin Dass Naidu; [2016]
    Nyckelord :;

    Sammanfattning : The current report discusses efficient and accurate numerical techniques to evaluate aerodynamic disturbance and damping forces based on investigations carried out at ABB Turbo System AG. The test turbomachine comprises a single-stage transonic axial turbine analysed with the fluid dynamic software ANSYS CFX 17.0 and post-processing tool Matlab. LÄS MER

  7. 5. Effect of Axial Gap Distance on Transonic Compressor Performance

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Joseph Sadek; [2015]
    Nyckelord :Axial Gap Distance; Transonic Compressors; Aerodynamic Performance; CFD; Harmonic Balance; inter-row gap;

    Sammanfattning : The modern trend of gas turbines design is towards lighter, highly efficient,and more compact engines. Such situation imposes on engineers to continuouslysearch for improved and optimum designs. The thesis presented aims at researching possible performance improvements regarding axial gapdistance in transonic compressors. LÄS MER