Essays about: "Punktkälla"

Showing result 1 - 5 of 8 essays containing the word Punktkälla.

1. 1. Exploring potential E-fuel production pathways for maritime and aviation sectors in France : a techno-economic and environmental assessment

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Mathieu Minaud; [2024]
   Keywords : ;

   Abstract : The aviation and maritime industries pose significant challenges for decarbonization, having increased activity in the past decade. One promising solution to limit emissions in these sectors is Electrofuels (E-fuel), derived from water electrolysis hydrogen and captured CO2 or nitrogen. 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. A Discrete Cylindrical Luneburg Lens With Liquid Layers

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Curt-Herman Normark Frisk; Erik Algarp; [2020]
   Keywords : Luneburg lens; 5G; high directivity; liquid lens; transparent liquids;

   Abstract : In this project, a cylindrical Luneburg lens isdesigned operating at optical frequencies. A Luneburg lens isa gradient index lens that transforms a point source into aplane wave or vice versa. The lens is rotational symmetric whichallows wide-angle beam scan. In this work, the gradient indexis discretized in layers. READ MORE

5. 4. Comparison of direct air capture technology to point source CO2 capture in Iceland

   University essay from KTH/Kemiteknik

   Author : Anna Ingvarsdóttir; [2020]
   Keywords : Direct air capture; point source capture; Iceland; carbon removal; CCS; Direkt luftinfångning; infångning från punktkälla; Island; kolavskiljning; CCS;

   Abstract : Det är välkänt att klimatförändringar på grund av global uppvärmning är en av de största kriserna som hotar jorden. Det är en enorm utmaning för mänskligheten att minska koldioxidutsläppen, den främsta orsaken till global uppvärmning. READ MORE

6. 5. Acoustic Source Characterization of a Road

   University essay from KTH/Skolan för teknikvetenskap (SCI)

   Author : Somayan Basu; [2020]
   Keywords : Acoustic Characterization; Road noise; Point Source; Line Source; Traffic Intensity.; Akustisk karaktärisering; vägbuller; punktkälla; linjekälla; trafikintensitet.;

   Abstract : A road can be considered as a noise source based on its traffic density. Intuition says, a road, with closely spaced vehicles, can be classified as a line source and for sparsely spaced vehicles, a collection of point sources. READ MORE