Sökning: "Atmospheric Boundary Layer"

Visar resultat 16 - 20 av 28 uppsatser innehållade orden Atmospheric Boundary Layer.

  1. 16. Spatially varying parameters in observed new particle formation events

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Jimmie Carpman; [2015]
    Nyckelord :Aerosol; aerosols; particle; modeling; new particle formation; NPF; climate; coagulation; dry deposition; CCN; banana; distribution; number size distribution; spatial variation; spatial; Earth and Environmental Sciences;

    Sammanfattning : Aerosol particles affect the global climate due to its influence on the scattering and absorption of short-wave and long-wave radiation. The extent of the influence of aerosol particles on the climate varies a lot by time and space, and needs to be quantified. LÄS MER

  3. 17. Analytical and Numerical Study of Thermally Stratified Flow above a forest

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Ellinor Hultmark; [2015]
    Nyckelord :forest; thermal stratification; large-eddy simulation; LES; Richardson number; atmospheric boundary layer; wind power; Technology and Engineering;

    Sammanfattning : In order for our energy consumption to be sustainable, we need to rely more and more on renewable energy resources, such as solar power and wind power. In Sweden, 69% of the land area is covered in forest. LÄS MER

  4. 18. Source Term Estimation in the Atmospheric Boundary Layer : Using the adjoint of the Reynolds Averaged Scalar Transport equation

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Brännvall Tobias; [2015]
    Nyckelord :CFD; Source; Source term; STE; RANS; k epsilon; Adjoint; Adjoint equation; Reynolds transport equation; transport equation; adjoint of transport equation; Adjoint duality;

    Sammanfattning : This work evaluates whether the branch of Reynolds Averaging in Computational Fluid Dynamics can be used to, based on real field measurements, find the source of the measured gas in question. The method to do this is via the adjoint to the Reynolds Averaged Scalar Transport equation, explained and derived herein. LÄS MER

  5. 19. An Experimental Investigation of Wind-farm Flows

    Master-uppsats, KTH/Mekanik

    Författare :Blas Muro; [2014]
    Nyckelord :;

    Sammanfattning : In this thesis, fundamental properties of the turbulent ow above di erent wind-farm models were determined by means of wind-tunnel measurements. The assessed wind farms consisted in two staggered congurations, and two inline congurations, where two di erent streamwise spacings were evaluated. LÄS MER

  7. 20. Effects of a Forest Clearing: Experimentaland Numerical Assessment

    Master-uppsats, KTH/Mekanik

    Författare :Tetsuya Nakamura; [2013]
    Nyckelord :;

    Sammanfattning : There is a renewed interest in the wind estimate over and around forest areas dueto the increasing demand of wind-energy resources. Many researches have been donewith simplied forest models. LÄS MER