Search for dissertations about: "CFD in pumps"

Showing result 1 - 5 of 7 swedish dissertations containing the words CFD in pumps.

  2. 1. Low-Temperature Baseboard Heaters in Built Environments

    Author : Adnan Ploskic; Sture Holmberg; Joachim Claesson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Baseboard skirting heating; Low-temperature heating; Thermal comfort; Heat transfer; CFD; Chemical engineering; Kemiteknik;

    Abstract : The European Union has adopted a plan to decrease 20 % of total energy consumption through improved energy efficiency by 2020. One way of achieving this challenging goal may be to use efficient water-based heating systems supplied by heat pumps or othersustainable systems. READ MORE

  4. 2. Analytical and Numerical Investigations of Steady and Unsteady Turbulent Swirling Flow in Diffusers

    Author : Walter Gyllenram; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; draft tube; diffuser; LES; vortex breakdown; turbulence; CFD; swirling flow;

    Abstract : Swirling flows are found in many technical applications, e.g. turbines, pumps, fans, compressors and combustors. The objective of the present work is to acquire an understanding of the physics of swirling flow in general and unsteady swirling flow in draft tubes of water turbines in particular. READ MORE

  5. 3. Suction dynamics of axial piston pumps

    Author : Pär-Erik Wiklund; KTH; []
    Keywords : ;

    Abstract : Computational fluid dynamics (CFD), extensive experimentalstudies and a one-dimensional model based on two pressurereduction coefficients are used in this thesis to analyse thesuction dynamics of an bent axis axial piston pump. Specialattention is given to cavitation since a great deal of problemsare related to this very important phenomenon. READ MORE

  6. 4. Technical solutions for low-temperature heat emission in buildings

    Author : Adnan Ploskic; Sture Holmberg; Bjarne Olesen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Analytical and numerical modeling; baseboard skirting heating; building energy performance; computational fluid dynamics CFD ; heat transfer; low-temperature heating; space heating; thermal comfort; Järnvägsgruppen - Effektiva tågsystem för godstrafik; Järnvägsgruppen - Effektiva tågsystem för godstrafik;

    Abstract : The European Union is planning to greatly decrease energy consumption during the coming decades. The ultimate goal is to create sustainable communities that are energy neutral. One way of achieving this challenging goal may be to use efficient hydronic (water-based) heating systems supported by heat pumps. READ MORE

  7. 5. Mixture Effects in Shell-and-Tube Condensers. Theory and Calculations

    Author : Tord Karlsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; shell-and-tube; heat transfer; zeotropic; condensation; mass transfer; mixture;

    Abstract : Zeotropic mixtures have come into more frequent use as working fluids (refrigerants) in heat pumps and air conditioning equipment due to the phase-out of ozone-depleting substances. Substantial drop in performance for shell-side condensation in shell-and-tube condensers when replacing a pure fluid with a mixture has been reported in the literature. READ MORE