Essays about: "Linjära vågor"

Showing result 1 - 5 of 6 essays containing the words Linjära vågor.

  1. 1. Probabilistic Added Wave Resistance Predictions for Design of RoPax Ferries

    University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Author : Jonathan Viinikka; [2023]
    Keywords : Added wave resistance in head waves; Roll-on Roll-off Passenger ferry; Probabilistic wave environment; Semi-empirical method; Adderat vågmotstånd i motsjö; Roll-on Roll-off Passagerar Fartyg; Probabilistiska vågförhållanden; Semiempiriska beräkningsmethoder;

    Abstract : This thesis investigates reasons for significant uncertainties in added wave resistance predictionsand how wave conditions can potentially affect the design of RoPax ferries. The objectiveis to find a suitable prediction method of added wave resistance for the RoPax ferry designapplication. READ MORE

  3. 2. Computation of Acoustic Wave Propagation Under Water

    University essay from KTH/Matematik (Avd.)

    Author : Frida Thörn; [2022]
    Keywords : Wave equation; Helmholtz equation; Waveholtz iteration; finite difference method; summation by parts; energy method; point source; curvilinear coordinates; vågekvationen; helmholtz ekvation; waveholtz iteration; finita differens methoden; energimetoden; punktkälla; kurvlinjära koordinater; kroklinjiga koordinater; SBP;

    Abstract : In this thesis we look at acoustic wave propagation under water. We look in particular at waves generated by a point source and what happens with the propagation when we model the bottom as flat or as curvilinear. We assume the source to be working at a certain frequency and therefore we model this problem by solving the Helmholtz equation. READ MORE

  4. 3. Wave Energy Concept Benchmarking

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Petter Larsson; Gustaf Rudbeck; [2021]
    Keywords : Budal K; Linear waves; Oscillating water column; Point absorber; Wave energy; Budal K; Linjära vågor; Oscillating water column; Point absorber; Vågenergi;

    Abstract : Denna rapport ämnar undersöka de vanligast förekommande typerna av teknologier för vågkraftverk (eng. Wave Energy Converter, WEC) teknologier för att jämföra de olika konceptens förmåga att absorbera vågenergi. Koncept som undersöks är punktabsorbatorer och oscillerande vattenkolumner. READ MORE

  5. 4. Two-dimensional roughness and Tollmien-Schlichting waves: a study on transition

    University essay from KTH/Strömningsmekanik och Teknisk Akustik

    Author : Derek Micheletto; [2020]
    Keywords : ;

    Abstract : Two-dimensional (2D) roughnesses induce premature transition to turbulence in laminar boundary layers by amplifying the disturbances in the flow and promoting the development of non-linearities. The present thesis aims at furthering our understanding of this phenomenon's underlying mechanisms and elucidating the effects of the different geometrical parameters of the roughness' cross section. READ MORE

  6. 5. Mechanical design of transverse flux linear generator for wave power : Mekanisk konstruktion av linjär transversalflödesgenerator för vågkraft

    University essay from KTH/Maskinkonstruktion (Inst.)

    Author : Erling Guldbrandzén; Manthan Shah; [2016]
    Keywords : ;

    Abstract : En transversalflödesgeneratortopologi skall användas för att generera elektricitet av havsvågor. Den huvudsakliga fördelen med detta koncept är dess låga förluster och att en högre kraftdensitet kan uppnås vid låga hastigheter. READ MORE