We employ a resolvent-based methodology to estimate velocity and pressure fluctuations within turbulent channel flows at friction Reynolds numbers of approximately 180, 550 1000 using measurements shear stress the walls, taken from direct numerical simulation (DNS) databases. Martini et al. (J. Fluid Mech., vol. 900, 2021, A2) showed that estimator is optimal when true space-time forcing statis...

a numerical investigation of forced convection in a channel with hot solid block inside a square porous block mounted on a bottom wall was carried out. the lattice boltzmann method was applied for numerical simulations. the fluid flow in the porous media was simulated by brinkman-forchheimer model. the effects of parameters such as porosity and thermal conductivity ratio over flow pattern and t...

Estimation of the initial state turbulent channel flow from spatially and temporally resolved wall data is performed using adjoint-variational assimilation. The estimated fields satisfy Navier–Stokes equations minimize a cost function defined as difference between model predictions available observations. accuracy predicted deteriorates with distance wall, most precipitously across buffer layer...