Capabilities & Equipment

How can particle transport and separation in filters be modeled and simulated? We perform CFD simulations, analyze the filter structure using our microCT scanner, and validate our simulation results on various particle test benches that we designed and built ourselves.

Examples of research areas:

• Oil mist filtration
• Cabin air filtration
• Masks

How can we achieve healthy indoor air quality through ventilation and filtration while maintaining good thermal comfort and minimizing energy consumption? We conduct indoor measurements, perform flow simulations, and develop real-time computational models!

How can vehicle emissions be quantified under real-world driving conditions using PEMS (Portable Emissions

Measurement System), taking into account driving dynamics, vehicle type, and the condition of the exhaust aftertreatment system?

Possible measurements:

• PN Particle number from 23 or 10 nm
• NO, NO₂, NO_x
• CO
• CO₂ correlated with fuel consumption

How can complex physical systems be represented as mathematical problems that can be easily solved and simulated

using efficient solvers?

• Material models (Newtonian, linearly elastic, viscoelastic, ...)
• Methods for complex variables
• Discretization methods (FD, FE, spectral methods)
• Dimension reduction
• Multiphysics problems

Outlook: Further development of these methods, particularly with regard to numerical methods involving complex numbers

How can one use auxiliary quantities (potentials) to endow the equations of motion with mathematically desirable properties, such as integrability, and derive simplified equations from them?

• Transient flows
• Hydrodynamic Stability
• Simplified implementation using curvilinear coordinates

Perspective: Reduction of fluid dynamics problems to matrix algebras

How do two immiscible phases move through a porous medium under the influence of capillary, pressure, and

gravitational forces? We investigate these highly complex flow phenomena using modeling and numerical simulation, taking into account transport processes and non-isothermal conditions.

How can one find variational formulations as an alternative to the equations of motion in fluid dynamics, in order to build highly efficient simulation methods based on them?

• Universal Symmetries and Noether’s Theorem
• Analogy between Fluid Dynamics and Quantum Theory
• Incorporation of thermodynamics and dissipation
• Nonlinear acoustics

Outlook: Novel finite element methods