217 citations · 868 across the 46 of their papers we have counts for
6 papers · 1 filter
The dynamics of dense particles in vertical channel flows: gravity, lift and particle clusters
Amir Esteghamatian, Tamer A. Zaki
The dynamics of dense finite-size particles in vertical channel flows of Newtonian and viscoelastic carrier fluids are examined using particle resolved simulations. Comparison to n…
Observation-infused simulations of high-speed boundary layer transition
David A. Buchta, Tamer A. Zaki
High-speed boundary-layer transition is extremely sensitive to the free-stream disturbances which are often uncertain. This uncertainty compromises predictions of models and simula…
State estimation in turbulent channel flow from limited observations
Mengze Wang, Tamer A. Zaki
Estimation of the initial state of turbulent channel flow from limited data is investigated using an adjoint-variational approach. The data are generated from a reference direct nu…
DeepM&Mnet for hypersonics: Predicting the coupled flow and finite-rate chemistry behind a normal shock using neural-network approximation of operators
Zhiping Mao, Lu Lu, Olaf Marxen +2
In high-speed flow past a normal shock, the fluid temperature rises rapidly triggering downstream chemical dissociation reactions. The chemical changes lead to appreciable changes…
DeepM&Mnet: Inferring the electroconvection multiphysics fields based on operator approximation by neural networks
Shengze Cai, Zhicheng Wang, Lu Lu +2
Electroconvection is a multiphysics problem involving coupling of the flow field with the electric field as well as the cation and anion concentration fields. For small Debye lengt…
Two-point stress-strain rate correlation structure and non-local eddy viscosity in turbulent flows
P. Clark Di Leoni, T. A. Zaki, G. Karniadakis +1
By analyzing the Karman-Howarth equation for filtered velocity fields in turbulent flows, we show that the two-point correlation between filtered strain-rate and subfilter stress t…