Search for dissertations about: "detonation"

Showing result 1 - 5 of 16 swedish dissertations containing the word detonation.

  1. 1. Flame Dynamics and Deflagration-to-Detonation Transition

    University dissertation from Stockholm : KTH

    Author : Damir Valiev; KTH.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; flame; premixed; instability; fractal; deflagration; detonation; DDT; simulation; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Abstract : Various premixed flame phenomena are studied by means of direct numerical simulations of the complete system of hydrodynamic equations. Rigorous study of flame dynamics is essential for all premixed combustion problems where multidimensional effects cannot be disregarded.The present thesis consists of six parts. READ MORE

  2. 2. Magnetic deflagration and detonation in crystals of nanomagnets

    University dissertation from Umeå : Umeå University

    Author : Oleksii Iukhymenko; Umeå universitet.; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nanomagnets; magnetic deflagration; front instability; Zeeman energy; magnetic instability; magnetic detonation; weak detonation; Physics Of Matter; materiefysik;

    Abstract : In this thesis we cover the dynamics of the macro magnetic transformations (spin avalanches) in crystals of molecular nanomagnets, also known as magnetic deflagration and detonation.Taking a single-molecule Hamiltonian, we calculate the dependence of Zeeman energy and the activation energy as a function of an external magnetic field at different angles relative to the easy axis of the crystal. READ MORE

  3. 3. The role of Landau-Darrieus instability in flame dynamics and deflagration-to-detonation transition

    University dissertation from Stockholm : KTH

    Author : Damir Valiev; KTH.; [2007]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flame; premixed; instability; front; Landau; Darrieus; fractal; freely; deflagration; detonation; transition; DDT; modeling; simulation; TECHNOLOGY Materials science Other materials science; TEKNIKVETENSKAP Teknisk materialvetenskap Övrig teknisk materialvetenskap;

    Abstract : The role of intrinsic hydrodynamic instability of the premixed flame (known as Landau-Darrieus instability) in various flame phenomena is studied by means of direct numerical simulations of the complete system of hydrodynamic equations. Rigorous study of flame dynamics and effect of Landau-Darrieus instability is essential for all premixed combustion problems where multidimensional effects cannot be disregarded. READ MORE

  4. 4. Post-Detonation Afterburning of High Explosives

    University dissertation from Department of Energy Sciences, Lund University

    Author : Katja Fedina; Lunds universitet.; Lund University.; [2017-06-08]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Explosives; Combustion; LES; Finite rate chemistry; Explosives; Combustion; LES; Finite rate chemistry; Height of Burst;

    Abstract : High performance of an explosive compound with respect to afterburning requires sufficient combustible properties of the explosive, and a careful determination of the most appropriate charge positioning to achieve the desired afterburning effect. Understanding the physical processes of post-detonation afterburning and how these are affected by the surroundings, e. READ MORE

  5. 5. Turbulent burning, flame acceleration, explosion triggering

    University dissertation from Umeå : Fysik

    Author : V'yacheslav Akkerman; Umeå universitet.; [2007]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Turbulent combustion; flame acceleration; detonation explosion triggering; direct numerical simulations; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik;

    Abstract : The present thesis considers several important problems of combustion theory, which are closely related to each other: turbulent burning, flame interaction with walls in different geometries, flame acceleration and detonation triggering.The theory of turbulent burning is developed within the renormalization approach. READ MORE