Essays about: "Bubbla"

Showing result 1 - 5 of 11 essays containing the word Bubbla.

  1. 1. The Impact of Swampland Conjectures

    University essay from Uppsala universitet/Teoretisk fysik

    Author : Daniel Nilsson; [2023]
    Keywords : String theory; Quantum gravity; Swampland program; Effective field theories;

    Abstract : The Swampland program is way of sorting effective field theories based on conjectures of how an effective field theory consistent with quantum gravity should look like. In this thesis we take a closer look at the No Global Symmetries Conjecture, the Weak Gravity Conjecture, the de Sitter Conjecture and the Trans-Planckian Censorship Conjecture. READ MORE

  3. 2. Numerical simulation of a rising bubble

    University essay from KTH/Strömningsmekanik och Teknisk Akustik

    Author : Nan Huang; [2021]
    Keywords : Multiphase flows; numerical simulations; Strömningsmekanik; flerfas strömningar;

    Abstract : This thesis evaluates two variants of Volumeof fluid method, namely Piecewise Linear Interface Construction (PLIC) and Multidimensional Tangent of Hyperbola for Interface Capturing (MTHINC) used in two-fluid simulations for interface tracking.Simulations of a single rising bubble in different conditions are performed aimed to assess the accuracy of the methods, and to check their convergence with grid size. READ MORE

  4. 3. Relativistic attosecond electron pulses by laser wakefield acceleration

    University essay from Lunds universitet/Atomfysik; Lunds universitet/Fysiska institutionen

    Author : Cornelia Gustafsson; [2020]
    Keywords : laser wakefield accelerator; laser wakefield acceleration; attosecond; electron pulses; Physics and Astronomy;

    Abstract : The search for cheaper and more compact accelerators has led to the development of laser-driven plasma-based accelerators. In comparison to conventional particle accelerators, the plasma-based accelerator is inherently insensitive to the breakdown of the acceleration structure and therefore greater accelerating fields can be obtained. READ MORE

  5. 4. Fluid/Material Coupled Numerical Analysis of Single Bubble Collapse Near a Pit on a Wall

    University essay from KTH/Strömningsmekanik och Teknisk Akustik

    Author : Daiki Makii; [2020]
    Keywords : Bubble Dynamics; Cavitation Erosion; Numerical Analysis; Fluid Material Coupled Numerical Method; Homogeneous Model; Elastic Body Material; Erosion Pit;

    Abstract : In order to elucidate the progression mechanism of cavitation erosion, the behaviors of a single cavitation bubble collapse near a pit on a wall and both the resulting pressure wave in fluid and stress wave in material are investigated in detail. To find out the mechanism of cavitation erosion, many experimental studies on the bubble collapse behavior near a flat rigid wall and the resulting material damage have been conducted so far. READ MORE

  6. 5. Mean-Variance Portfolio Selection Accounting for Financial Bubbles: A Mean-Field Type Approach

    University essay from KTH/Matematisk statistik

    Author : Marcus Häggbom; Shayan Nafar; [2019]
    Keywords : Financial bubbles; portfolio optimization; mean-variance trade-off; mean-field type optimal control; fundamental value; mean reversion; Finansiella bubblor; portföljoptimering; optimal kontroll av medelfältstyp; fundamentalt värde; medelreversion;

    Abstract : The phenomenon of financial bubbles is known to have impacted various markets since the seventeenth century. Such bubbles are known to form when the market drastically overvalues the price of an asset, causing its market value to increase hyperbolically, only to suddenly collapse once the untenable perceived future prospects of the asset are realized. READ MORE