• Bow Shock Clustering in Particle-laden Wetted Cylinder Flow 

      Shi, Zhaoyu; Jiang, Fengjian; Strandenes, Håkon; Zhao, Lihao; Andersson, Helge Ingolf (Peer reviewed; Journal article, 2020)
      The inhomogeneous distributions of inertial particles in the unsteady flow around a wetted circular cylinder at Re=100 were investigated in one-way coupled three-dimensional numerical simulations. The Kármán vortex cells ...
    • Direct Numerical Simulation of Turbulent Channel Flow 

      Sebastian, Benjamin Clement (Master thesis, 2018)
      Several Direct Numerical Simulations (DNS) of a fully developed turbulent channel flow are performed. The aim of this thesis is to analyze how grid resolutions and domain sizes affect the turbulence statistics. The simulations ...
    • Direct numerical simulation of turbulent flow in a channel with transverse ribs 

      Marstein, Tor Holan (Master thesis, 2015)
      Surface roughness is of great relevance in most engineering applications, as very few surfaces can be regarded as perfectly smooth. Investigation of the effects on the mean flow, as well as the near wall turbulence is ...
    • Dynamics of disk-like particles in turbulent vertical channel flow 

      Yuan, Wenjun; Andersson, Helge Ingolf; Zhao, Lihao; Challabotla, Niranjan Reddy; Deng, Jianqiang (Journal article; Peer reviewed, 2017)
      The dynamical behavior of inertial disk-like particles in turbulent vertical channel flow is investigated by an Eulerian–Lagrangian point-particle approach. Gravity effects on distribution, translation, rotation and ...
    • Eulerian-Lagrangian simulation of pulverized biomass jet using spheroidal particle approximation 

      Guo, Ning; Li, Tian; Zhao, Lihao; Løvås, Terese (Journal article; Peer reviewed, 2019)
      Pulverized biomass has great potential to replace coal in many industrial systems such as suspension-firing furnaces and entrained-flow gasifiers. The shape of pulverized biomass deviates significantly from the quasi-spherical ...
    • Nonspherical particle suspensions in wall turbulence 

      Challabotla, Niranjan Reddy (Doctoral theses at NTNU;2016:302, Doctoral thesis, 2016)
      In the present PhD thesis, we investigate the dynamics of small non-spherical particles suspended in a fully developed turbulent channel flow. Non-spherical particles are approximated as axisymmetric spheroidal and triaxial ...
    • Particle segregation in turbulent Couette-Poiseuille flow with vanishing wall shear 

      Yang, Kun; Zhao, Lihao; Andersson, Helge Ingolf (Journal article, 2017)
      Inertial particles dispersed in wall-bounded flows in pipes and channels are known to accumulate close to the walls. The segregation ability depends greatly on the inertia-selection effects of the near-wall quasi-coherent ...
    • Particles in wall turbulence 

      Zhao, Lihao (Doktoravhandlinger ved NTNU, 1503-8181; 2012:15, Doctoral thesis, 2012)
      The overall objective of this doctoral thesis is to investigate how tiny particles are dispersed in a turbulent channel flow and how the fluid turbulence is modulated due to the presence of particles. Both spherical and ...
    • Preferential orientation of tracer spheroids in turbulent channel flow 

      Jie, Yucheng; Zhao, Lihao; Xu, Chunxiao; Andersson, Helge Ingolf (Journal article; Peer reviewed, 2019)
      Axis-symmetric spheroids, such as rod-like and disk-like particles, have been found to orient preferentially in near-wall turbulence by both experiment and numerical simulation. In current work we examined the orientation ...
    • Preferential particle concentration in wall-bounded turbulence with zero skin friction 

      Yang, Kun; Zhao, Lihao; Andersson, Helge Ingolf (Journal article; Peer reviewed, 2017)
      Inertial particles dispersed in turbulence distribute themselves unevenly. Besides their tendency to segregate near walls, they also concentrate preferentially in wall-parallel planes. We explore the latter phenomenon in ...
    • Turbulent Couette–Poiseuille flow with zero wall shear 

      Yang, Kun; Zhao, Lihao; Andersson, Helge Ingolf (Journal article, 2017)
      A particular pressure-driven flow in a plane channel is considered, in which one of the walls moves with a constant speed that makes the mean shear rate and the friction at the moving wall vanish. The Reynolds number ...