Search for dissertations about: "Fluid temperature levels"

Showing result 1 - 5 of 65 swedish dissertations containing the words Fluid temperature levels.

  1. 1. LES of Jets and Sprays Injected into Crossflow

    University dissertation from Lund Institute of Technology

    Author : Mirko Salewski; Lund University.; Lunds universitet.; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gaser; fluid dynamics; large eddy simulation; spray; plasmas; Gases; lagrangian particle tracking; jet in crossflow; fluiddynamik; plasma;

    Abstract : The objective of this thesis is to numerically simulate a fluid jet injected into a crossflow of the same or another fluid, respectively. Such flows are encountered in many engineering applications in which cooling or mixing plays an important role, e.g. gas turbine combustors. READ MORE

  2. 2. Direct numerical simulation of turbulent premixed flames at high Karlovitz numbers: structure and modelling

    University dissertation from Department of Energy Sciences, Lund University

    Author : Thommie Nilsson; Lund University.; Lunds universitet.; [2019]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Direct numerical simulation; Computational fluid dynamics; Combustion model; Premixed flame; Turbulence; Karlovitz number;

    Abstract : There has been recent increased interest in premixed flames and in particular for use in gas turbines for power generation. This is a development that follows from increasing demands for high efficiency and low emissions of NOx, which can be achieved by using premixed flames and lean pre-heated mixtures, often close to the lean flammability limit. READ MORE

  3. 3. Experimental investigation of flows related to gas turbine combustion

    University dissertation from Fluid Mechanics

    Author : Dragan Stankovic; Lund University.; Lunds universitet.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mechanical engineering; combusiton; flameless; jets in cross flow; chemiluminescence; POD; LIF; PIV; Spray; Gas Turbine; single digit NOx; Premixed Combustion; hydraulics; vacuum technology; vibration and acoustic engineering; Maskinteknik; hydraulik; vakuumteknik; vibrationer; akustik;

    Abstract : The notion of "global warming" has become a major public-domain concept as an environmental threat to our future on earth. Independently of the accuracy of existing prediction of combustion emissions on the climate on earth, the concept of reducing combustion emissions has been an important political driving force in imposing more and more severe restrictions on harmful emissions from combustion. READ MORE

  4. 4. Large Eddy Simulation of Turbulent Reactive Flows under HCCI Engine Conditions

    University dissertation from Fluid Mechanics

    Author : Tobias Joelsson; Lund University.; Lunds universitet.; Lund University.; Lunds universitet.; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Large Eddy Simulation (LES) modeling is developed to study homogeneous charge compression ignition (HCCI) combustion under different engine operation and mixture conditions, including real engine configurations and generic test cases. A previously developed HCCI model has been validated by comparing the simulation results with engine experiments. READ MORE

  5. 5. Pressurized entrained-flow high temperature black liquor gasification CFD based reactor scale-up method and spray burner characterization

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Magnus Marklund; Luleå tekniska universitet.; [2006]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Abstract : Black liquor is an important by-product in the chemical kraft pulping process, which provides the paper mill with pulp. Due to both economical and environmental protection driving forces it is important to recover the pulping chemicals and energy contained in the black liquor. READ MORE