Detailed project information

The numerical simulation of turbulent flow forms a subject of intensive research. In the Multiscale Modeling and

Simulation group attention is given to turbulence modulation, i.e., the modification of turbulence due to external effects

such as rotation, stratification, interaction with embedded particles and bubbles and direct time-dependent forcing.

Turbulence modulation is studied using direct numerical simulation (DNS) and large-eddy simulation (LES).

In addition, flow through complex porous media is a focal point, allowing attention for the study of heat- and mass

transfer as well as the long-time stability of biological tissues, e.g., of relevance to cerebral aneurysms.

The focus in this research is first on the development and thorough understanding of the numerical methods in relation to

the underlying physical and mathematical properties of the governing equations. Attention is subsequently given to

understanding physical/chemical/biological aspects of specific systems through extensive parameter studies.

These computational modeling studies rely entirely on the availability of modern supercomputers. The turbulence

problem is recognized as a key example of problems that can continuously absorb further progress in computational

hardware and software. This becomes all the more relevant in case turbulent flow is modulated through additional

physical mechanisms. The flow through porous media is of particular relevance to process engineering and to understand

flow in atmospheric boundary layers over rough terrain. The flows involved in biomedical applications are relevant to

improved planning and support of surgical interventions.

The project is funded primarily through grants from STW, NWO, FOM.

Articles

• F. van der Bos, Prof. dr. ir. B.J. Geurts (2009). Computational error-analysis of discontinuous Galerkin disretization applied to large-eddy simulation of homogeneous turbulence. . pp. 
• Dr. ir. R.P.J. Kunnen, Prof. dr. ir. B.J. Geurts (2010). Experimental and numerical investigation of turbulent convection in a rotating cylinder. . pp. 
• Dhr. D. Lopez Penha MSc, Prof. dr. ir. B.J. Geurts (2010). Computational modelingof pore-scale fluid transport in tomographic representations of porous media, Transport in porous materials and in networked microstructures. . pp. 
• B.S. Deb MSc, Mw. L. Ghazaryan MSc (2010). The effect of phase transition on the droplet size distribution in homogeneous isotropic turbulence. . pp. 
• Dhr. D. Lopez Penha MSc, Mw. L. Ghazaryan MSc (2010). An immersed boundary method for computing heat and fluid flow in porous media. . pp. 
• Mw. J. Mikhal MSc, Dhr. D. Lopez Penha MSc (2010). Immersed boundary method predictions of shear stresses for different flow topologies occuring in cerebral aneurysms. . pp. 
• Prof. dr. ir. B.J. Geurts, S.P. Stolz (2010). Penetration of sub-micron aerosol droplets in composite cylindrical filtration elements. . pp. 
• J. Meyers, Prof. dr. ir. B.J. Geurts (2010). Error-landscape-based multi-objective calibration of the smagorinsky eddy-viscosity using high-reynolds-number dacaying turbulence data. . pp. 
• Dr. ir. R.P.J. Kunnen, Prof. dr. H.J.H. Clercx (2010). Vortex statistics in turbulent rotating convection. . pp. 
• Dr. ir. S. van Mourik, Prof. dr. ir. B.J. Geurts (2010). Modelling and controller design for a UV disinfection plant. . pp.