Sökning: "UDF"

Hittade 3 uppsatser innehållade ordet UDF.

  1. 1. Influence on tip leakage flow in a compressor cascade with plasma actuation

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

    Författare :Haotian Wang; [2019]
    Nyckelord :Flow control; DBD Plasma actuation; phenomenological model; numerical simulation; tip leakage flow; compressor cascade.; Flödesreglering; DBD Plasma‐aktuator; numerisk simulering; toppspelsflöde; kompressor kaskad.;

    Sammanfattning : As one of the key components of aero engines, compressor is required to endure higher pressure,  possess  higher  efficiency  and  wider  operating  range. Intensive studies have been made on tip leakage flow and researchers find that by reasonably organizing tip leakage flow, aero engines are  more likely to achieve better performance and reliability. LÄS MER

  3. 2. Investigation of the Turbulent Flow and Heat Transfer around a Heated Cube Cooled by Multiple Impinging jets in a Cross-Flow

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

    Författare :Robert Johansson; [2016]
    Nyckelord :CFD; energy system; RSM;

    Sammanfattning : The fast development in electronics has resulted in faster and faster computers. Furthermore, the electronic components trend to get smaller and smaller by the year. With more processing power combined with smaller components the heat generation rapidly increases. LÄS MER

  4. 3. Civilsamhällets mobilisering i demokratiseringsprocessen -en fallstudie av Sydafrika

    Kandidat-uppsats, Lunds universitet/Statsvetenskapliga institutionen

    Författare :Elise Jeppsson; [2008]
    Nyckelord :Civil society; South Africa; Democratization; Apartheid; Mobilization; Political and administrative sciences; Statsvetenskap; förvaltningskunskap; Law and Political Science;

    Sammanfattning : This essay captures the process toward a democratic transition in South Africa and tempts on analyzing the efforts made by civil society before the negotiation with the government in the beginning of the 90´s. The method used is a case study. LÄS MER