• A multiple-resolution scheme for DNS of scalar fields in turbulent flows 

      Hellen, Tommy (Master thesis, 2022)
      For turbulente strømninger med tilstedeværelse av et aktivt eller passivt skalarfelt, tilsvarende Kolmogorov-skalaen η, er de minste skalaene hvor skalarkonsentrasjon transporteres definert som Batchelor-skalaen λ_B. Når ...
    • Aerodynamically driven rupture of a liquid film by turbulent shear flow 

      Kozul, Melissa; Costa, Pedro S.; Dawson, James; Brandt, Luca (Peer reviewed; Journal article, 2020)
      The rupture of a liquid film due to coflowing turbulent shear flows in the gas phase is studied using a volume-of-fluid method. To simulate this multiphase problem, we use a simplified numerical setup where the liquid film ...
    • Direct numerical simulation of spray droplet evaporation in hot turbulent channel flow 

      Lupo, Giandomenico; Gruber, Andrea; Brandt, Luca; Duwig, Christophe (Peer reviewed; Journal article, 2020)
      We perform a direct numerical simulation (DNS) of 14081 “cold” spherical droplets evaporating in a “hot” fully-developed turbulent channel flow. This effort is the first extensive computation that employs four-way coupling ...
    • Emulsions in Polymeric Turbulence 

      Øi, Truls Helge (Master thesis, 2022)
      Rapporten introduserer grunnleggende teori for Newtonsk turbulens, med fokus på andre ordens strukturfunksjon for hastighet og energispektrum. Formalismen for turbulens blir så brukt på ferske resultater for turbulent ...
    • Experimental and numerical investigation of bubble migration in shear flow: Deformability-driven chaining and repulsion 

      Feneuil, Blandine Fleur Prudence; Iqbal, Kasi Tassawar; Jensen, Atle; Brandt, Luca; Tammisola, Outi; Carlson, Andreas (Journal article, 2023)
      We study the interaction-induced migration of bubbles in shear flow and observe that bubbles suspended in elastoviscoplastic emulsions organize into chains aligned in the flow direction, similarly to particles in viscoelastic ...
    • The interaction of droplet dynamics and turbulence cascade 

      Crialesi-Esposito, Marco; Chibbaro, Sergio; Brandt, Luca (Peer reviewed; Journal article, 2023)
      The dynamics of droplet fragmentation in turbulence is described by the Kolmogorov-Hinze framework. Yet, a quantitative theory is lacking at higher concentrations when strong interactions between the phases and coalescence ...