Search for dissertations about: "nozzle"

Showing result 1 - 5 of 140 swedish dissertations containing the word nozzle.

  1. 1. A Numerical Investigation on VOD Nozzle Jets

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Zhili Song; KTH.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VOD; nozzle; jet; vaccum; CFD;

    Abstract : The metallurgic process, Vacuum Oxygen Decarburization (VOD) process, is used for producing stainless steels with ultra-low carbon grades. In a VOD process, an oxygen lance is equipped with a De Laval nozzle which injects high speed oxygen gas. READ MORE

  2. 2. Investigation of jet pulsation effects on near-nozzle mixing and entrainment

    University dissertation from KTH Royal Institute of Technology

    Author : Alexander Nygård; KTH.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sprays; Nozzle; Mixing; Pulsation; Teknisk mekanik; Engineering Mechanics;

    Abstract : Turbulent jet flows are very common in engineering applications. One example is that of fuel injection in internal combustion engines, which is closely related to the combustion process. Because of the widespread use, the resulting emissions of such engines have a significant impact on human health and the environment. READ MORE

  3. 3. Effect of swirling blade on flow pattern in nozzle for up-hill teeming

    University dissertation from Stockholm : KTH

    Author : Line Hallgren; KTH.; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; swirling flow; up-hill teeming; nozzle; casting; fluid flow; modelling; CFD; LDA.; TECHNOLOGY Chemical engineering Metallurgical process and manufacturing engineering Metallurgical process engineering; TEKNIKVETENSKAP Kemiteknik Metallurgisk process- och produktionsteknik Metallurgisk processteknik;

    Abstract : The fluid flow in the mold during up-hill teeming is of great importance for the quality of the cast ingot and therefore the quality of the final steel products. At the early stage of the filling of an up-hill teeming mold, liquid steel enters, with high velocity, from the runner into the mold and the turbulence on the meniscus could lead to entrainment of mold flux. READ MORE

  4. 4. The Submerged Entry Nozzle : A Study of how to Reduce Decarburization and Clogging

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Jennie Svensson; KTH.; Högskolan Dalarna.; [2014]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials Science and Engineering; Teknisk materialvetenskap; Stålformning och ytteknik;

    Abstract : During continuous casting the submerged entry nozzle (SEN) is one of the critical points. This since sequence casting is favourable, clogging of the SEN results in fever sequences or aborted castings. In this study the preheating of SEN has been evaluated at different steel plants. READ MORE

  5. 5. Fundamental Mathematical Modeling of Gas Injection in AOD Converters with Emphasis on the Inlet

    University dissertation from Stockholm : Materialvetenskap

    Author : Anders Tilliander; KTH.; [2003]
    Keywords : AOD; nozzle; modeling; steel; fluid flow; gas injection.;

    Abstract : The overall purpose of the present work has been to developa novel mathematical model of the gas injection in the AODconverter process, based on fundamental transport equations.The model development was divided into two major steps, wherethe first step involved modeling of gas injection through acylindrical nozzle at high gas flow rates (the nozzle model). READ MORE