The general subject of my research is computation of fluid flow and heat convective
transfer using finite volume computations.
I'm working with an in-house finite volume codes written in Python (pyCALC-LES, pyCALC-RANS),
which have been developed within the group.
Turbulence modelling for fluid flow and heat transfer is the focus of my research.
Currently, a larger part of the research is concentrated on Large Eddy Simulations (LES).
Another topic is
hybrid LES/RANS, an approach to make it possible to use LES for wall-bounded
flows at high Reynolds numbers. Since 2022, I work on Machine Learning for improving wall-functions
and turbulence models.
Extended visits
SPRING 1988: working six weeks at
INRS,
Nancy, France, on numerical simulation of air movements in enclosures.
SEP. 1989 - JUNE 1991: working at
CERFACS, Toulouse, France,
on simulation and modelling of flow around airfoils
and transonic flow in channels.
SPRING 1992:working three weeks at
CERFACS, Toulouse, France, on prediction and
modelling of flow around airfoils.
AUTUMN 1993: working three months at
CRS4, Cagliari, Italy,
on turbulence modelling and development of unstructured finite
volume methods.
AUTUMN 1995: working six months at
AUC, Aalborg, Denmark as
visiting professor. My work there was concentrated on Large
Eddy Simulationsof recirculating flow, and unstructured methods.
AUTUMN 1997: working six months at
AUC, Aalborg, Denmark as
visiting professor. My work there was concentrated on Large
Eddy Simulations of recirculating flow behind a backward-facing step.
We studied the ability of LES to reproduce low-Re number effects.
The Reynolds number was varied between 200 (laminar)
and 5000 (fully turbulent).
AUTUMN 1999: working four months at
AUC, Aalborg, Denmark as
visiting
VELUX
professor. I worked on low-Re number flow in a ventilated
room. We were able to predict the transitional
flow -- including both laminar and turbulent regions --
using LES. This flow cannot be predicted using traditional RANS.