Search for dissertations about: "reverse flow"

Showing result 1 - 5 of 55 swedish dissertations containing the words reverse flow.

  1. 1. A Study of the Swirling Flow Pattern when Using TurboSwirl in the Casting Process

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Haitong Bai; Mikael Ersson; Pär Jönsson; Yogeshwar Sahai; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flow pattern; swirling flow; TurboSwirl; CFD; turbulence models; water model; flödesmönster; roterandeflöde; TurboSwirl; CFD; turbulensmodeller; vattenmodell; Metallurgical process science; Metallurgisk processvetenskap;

    Abstract : The use of a swirling flow can provide a more uniform velocity distribution and a calmer filling condition according to previous studies of both ingot and continuous casting processes of steel. However, the existing swirling flow generation methods developed in last decades all have some limitations. READ MORE

  2. 2. Size Characterisation of Water-Soluble Polymers Using Asymmetrical Flow Field-Flow Fractionation

    University dissertation from Div of Technical Analytical Chemistry, Center for Chemistry and Chemical Engineering

    Author : Bengt Wittgren; [1997]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; multi-angle light scattering; molar mass distribution; aggregation; size characterisation; Asymmetrical flow FFF; water-soluble polymers; polysaccharides; Chemical technology and engineering; Kemiteknik och kemisk teknologi;

    Abstract : Size, as expressed by molar mass, radius of gyration or hydrodynamic radius, for example, is a fundamental parameter of polymers in solution. Thus, there is a strong need for the characterisation of both the size and shape of polymers, particularly of those utilised in various industrial applications. READ MORE

  3. 3. Tertiary Alcohol- or β-Hydroxy γ-Lactam-Based HIV-1 Protease Inhibitors Microwave Applications in Batch and Continuous Flow Organic Synthesis

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Per Öhrngren; Mats Larhed; Knud J. Jensen; [2011]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HIV; AIDS; protease inhibitor; aspartic protease; lactam; tertiary alcohol; continuous-flow; microwave; non-resonant; MAOS; Medicinal Chemistry; Läkemedelskemi;

    Abstract : Since the outbreak of the HIV/AIDS pandemic in the 1980s, the disease has cost the lives of over 30 million people, and a further 33 million are currently living with the HIV infection. With the appropriate treatment, HIV/AIDS can today be regarded as a chronic but manageable disease. READ MORE

  4. 4. Energy Efficient Processes for the Production of Gaseous Biofuels - Reforming and Gas Upgrading

    University dissertation from Department of Chemical Engineering, Lund University

    Author : Helena Svensson; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biofuels; Reverse-flow reforming; Gas upgrading; Amine absorption;

    Abstract : Replacing fossil fuels with biofuels is one way of reducing the emission of greenhouse gases into the atmosphere, thus decreasing our impact on the global climate. For this to be a viable option, several production routes are needed, as no single option can fully replace fossil fuels. READ MORE

  5. 5. Experimental study of turbulent flows through pipe bends

    University dissertation from KTH Royal Institute of Technology

    Author : Athanasia Kalpakli; P. Henrik Alfredsson; Ramis Örlü; Christoph Brücker; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbulent flow; swirl; pulsation; pipe bend; hot-wire anemometry; cold-wire anemometry; laser Doppler velocimetry; stereoscopic particle image velocimetry.;

    Abstract : This thesis deals with turbulent flows in 90 degree curved pipes of circular cross-section. The flow cases investigated experimentally are turbulent flow with and without an additional motion, swirling or pulsating, superposed on the primary flow. READ MORE