Advances in 3D solar flare modelling
status: published
Secondary flows induced by two-dimensional surface temperature heterogeneity in stably stratified channel flow
status: published
Scaling effects on experimentally obtained pressures on an idealized building: Possible implications towards asbestos co...
status: published
Hybrid RANS/LES simulations of secondary flows in a linear cascade of turbine blades with external turbulence
Turbine blades are highly aerodynamically loaded, which leads to secondary flows in the vicinity of the hub/shroud walls. These secondary flows are the cause of significant aerodynamic losses in the turbine row, that need to be accurately predicted by the design engineer. Also, turbine rows operate in a flow with a high intensity of free-stream tur...
RANS prediction of the aerodynamic losses in a linear turbine cascade with an upstream cavity and a purge flow
In a turbomachine, gaps separate stator and rotor disks. For turbines, often a purge flow is blown through these gaps in order to seal and avoid hot air to penetrate deep in the turbine disk components and over-solicit them. The interaction of this purge flow with the main flow creates and amplifies vortex structures, responsible for aerodynamic lo...
Extension of the Spectral Difference Method to Premixed Laminar and Turbulent Combustion
A Spectral Difference (SD) algorithm on tensor-product elements which solves the reacting compressible Navier-Stokes equations is presented. The classical SD algorithm is shown to be unstable when a multi-species gas where thermodynamic properties depend on temperature and species mass fractions is considered. It is demonstrated that computing prim...
On the statistics of coherent vortices in incoherent environments
Coherent vortices are important building blocks of complex flows on all scales, governing dynamics in various applications from geophysics over engineering to the coherent-structures’ paradigm of turbulence. As a commonly studied prototype of this configuration, we consider a large-scale, line vortex evolving in a background flow of small-scale, in...
Impact of Disc Wheel Geometry on Aerodynamic Performance: A Computational Fluid Dynamics Investigation
status: published
Time-resolved particle-scale dynamics of a particle-laden jet
Particle-laden jet flow is important to both jet-related industry applications and transmission of the virus through violent expiratory events, such as coughing and sneezing. To help understand its dynamics from the particle level, we develop a time-resolved, three-dimensional (3D), particle tracking velocimetry method, coupled with particle image ...
Boundary layer forcing on a rotating wing at low Reynolds numbers
Two separate experiments were conducted on a three-bladed NACA0012 rotor operating at a blade tip Reynolds number ranging from 44 − 110 × 10 3 using phase-locked infrared thermography (IRT) coupled with force and torque measurements. The first experiment consisted of a parametric study on the impact of forcing boundary layer transition using roughn...
