Sökning: "Neutron transport equation"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Neutron transport equation.

  1. 1. Convergence analysis of some numerical methods for neutron transport and Vlasov equations

    Författare :Mohammad Asadzadeh; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Convergence analysis; Neutron transport equation; Vlasov-Poisson equation; Finite element methods; Quadrature rule; Streamline-Diffusion method; Discontinuous Galerkin method; Neutron transport equation;

    Sammanfattning : .... LÄS MER

  3. 2. Numerical solutions of the one-speed neutron transport equation in two-medium slabs and spheres

    Författare :Ninos Garis; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; time-decay constant; eigenvalue spectrum; Carlvik s method; two-medium systems; criticality factor; Neutron transport equation;

    Sammanfattning : .... LÄS MER

  4. 3. Investigation of a discrete ordinates method for neutron noise simulations in the frequency domain

    Författare :Huaiqian Yi; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Deterministic neutron transport; Neutron noise; Ray effects; Numerical acceleration; Discrete ordinates method;

    Sammanfattning : During normal operations of a nuclear reactor, neutron flux measurements show small fluctuations around mean values, the so-called neutron noise. These fluctuations may be driven by a variety of perturbations, e.g., mechanical vibrations of core components. LÄS MER

  5. 4. Hydrodynamics of Binary Bose-Einstein Condensates and Hydro-elasticity of the Inner Crust of Neutron Stars

    Författare :Dmitry Kobyakov; Emil Lundh; Vitaly Bychkov; Mattias Marklund; Achim Schwenk; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Binary Bose-Einstein condensates in ultracold gases; hydrodynamics; quantum turbulence; neutron stars; the inner crust; nuclear astrophysics; fysik; Physics;

    Sammanfattning : In the present thesis, “Hydrodynamics of Binary Bose-Einstein Condensates and Hydro-elasticity of the Inner Crust of Neutron Stars”, the hydrodynamic effects, instabilities and superfluid turbulence in binary immiscible ultracold gases, and hydro-elastic macroscopic coupled modes and microscopic structure of the inner layers of the crust of neutron stars, are studied. The ultracold gas dynamics can be realized in the laboratory. LÄS MER

  7. 5. The Diversity and Unity of Reactor Noise Theory

    Författare :Zhifeng Kuang; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; neutron fluctuations; master equations; correlations; stochastic processes; the Langevin technique; power spectra; reactor noise; covariances;

    Sammanfattning : The study of reactor noise theory concerns questions about cause and effect relationships, and the utilisation of random noise in nuclear reactor systems. The diversity of reactor noise theory arises from the variety of noise sources, the various mathematical treatments applied and the various practical purposes. LÄS MER