Using 3D CFD simulations, we are able to realistically simulate complex physical phenomena and to work out optimizations.

3D CFD simulations are performed in order to visualize physical processes, to better understand them to improve the design of the structures and the processes. The focus is to optimize the flow conditions according to the optimal requirements so that undersizing and oversizing can be avoided and the benefit of the investment is maximized.

We consider scrapers, agitators, pumps, nozzles, air intakes, slide valves, gas supply, ventilation, suspended sediment load, material transport, particles, moving objects, fluid-solid interactions and thermodynamics in the context of single-phase and multiphase flows.

Your benefit

  • Fluid mechanical conditions are so complex that they can only be insufficiently described and optimized with one-dimensional or empirical approaches.
  • Due to the flexibility of the 3D numerical models, optimal solutions can be worked out efficiently.
  • Through imaging and visualization, physical processes can be illustrated and better understood.
  • The fluid dynamics optimization brings significant performance increases, prevents risky undersizing and expensive oversizing and thus maximizes the benefits of the investment.


Please click to open points below.

Hydraulic/ River Engineering
  • Upstream fish migration
  • Rake
  • Generall water hydraulics
  • Stabilization basin, Energy dissipation, throttle structure, culverts, bridges, tunnel
  • Flood retention basin
  • Driftwood/ log jam
  • Dam break
  • Coupled 2D/3D simulations
  • Suspension transport
  • Thermal simulations
  • Tidal wave
  • River temperature distributions in droughts
  • Spillways
  • Bottom outlets
  • Impulse induces waves
  • Air entry by turbulences
  • Cavitation
  • Stilling basin, Energy dissipation
  • Rake
  • Upstream/ downstream fish migration
  • Driftwood/ log jam
  • Reservoir sedimentation
Urban drainage
  • Capacity calculations and optimization of flood spillways, drop structures, vortex shafts, shaft structures and special structures
  • Simulation of the performance of valves, pipelines, branches
  • Polluting load simulations
  • Ventilation
  • Sewer with storage capacity, stormwater overflow tank, stormwater retention tank
  • Free surface and pressure pipes
Waste water treatment
  • Sedimentation tanks – sand traps, primary settling tanks, secondary settling tanks, lamella separators, thickener
  • Rake – coarse and fine rake
  • Activated sludge tanks – Denitrification, nitrification, agitators, aeration
  • Digester (Gas lance, agitators)
  • Fourth purification stage – activated carbon reactor, ozone reactor
  • Pumping stations
  • Special structures
Water supply
  • Flow conditions in reservoirs
  • Reactors and contact pools (Ozone, chlorine, activated carbon, flocculant)
  • Intrusion of chemicals and gases
  • Sedimentation tanks
  • Water distribution and water intake for open filters
  • Special structures

Renewable energy
  • Wind power
  • Solar power
  • Thermal usage of lake and river water
Urban climate
  • Urban climate simulations
  • Wind load simulations
  • Local wind and weather conditions
  • Distribution of harmful substances

Fire protection
  • Smoke gas
  • Smoke extractor
  • Fire resistance of components
  • Ventilation
  • Sprinkler system
Building and indoor climate
  • Thermal building an smoke simulations
  • Fluid dynamics of air conditioner and ventilation systems
Flow of people
  • Events
  • Evacuations

Processes and manufacturing
  • Heat conduction water-structure
  • Fluid-structure interactions
  • Heat exchanging device
  • Drying and evaporation
  • Mixing and separation
  • Propagation of matter
  • Separation
  • Flushing
  • Sedimentation
  • Flotation
Consumer goods
  • Washing machine
  • Dishwasher
  • Mixer
  • Vacuum cleaner
  • Hairdryer
  • Exhaust hood

  • Pumps/ Turbines
  • Agitators
  • Valve
  • Spray nozzle
  • Mixing tanks and separator
  • Flow control technology
  • Bottling plant
  • Sanitary engineering (e.g. toilets, shower head, whirlpools)

Contact person

Steffen Corbe

Steffen Corbe

M. Eng. Civil Eng., MBA

Head of Division 3D-CFD

E-Mail:  steffen.corbe@tkconsult.ch
Tel.: +41 (0) 44 288 81 87


Flyer 3D-CFD

Flyer 3D-CFD-Simulationens in urban water supply and sanitation

Latest News

Mattias Deller, June 15, 2021

Hydraulic capacity validation of a vortex dropshaft with a fall height of 68 m using 3D-CFD simulations

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Steffen Corbe, April, 9th 2021

TK CONSULT AG will give a presentation on 20th of April 2021 at the online VSA-Symposium on "DIGITIZATION IN CONSTRUCTION, OPERATION AND MAINTANENANCE OF DRAINAGE SYSTEMS" The instrument of 3D CFD simulations in urban drainage systems is presented.

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Mattias Deller, 22. February 2021

Hydraulic testing of the renovation work on a rainwater basin and the construction of a new drop shaft using a 3D-CFD simulation.

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Mattias Deller, 12. November 2020

As part of the renovation of a culvert on the Rötelbach in the canton of Thurgau, measures to increase capacity were checked using a 2-phase (water/air) 3D-CFD simulation

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Mattias Deller, 17 August 2020

Hydraulic evaluation and optimization of a union drop shaft

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Mattias Deller, 20. Mai 2020

Optimization of the residence time of an ozonation reactor taking into account fumigation and tracer concentration

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Ramona Nüssli, February 12, 2020

3D-CFD application to validate the temperature stratification of lake water used for industrial purposes

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Deller Mattias, June 14, 2019

Investigation of the mixing performance in a digestion tank for different gas injection configurations.

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Mattias Deller, 15. April 2019

Sludge mixing optimization in a SBR using different stirrer configurations.

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Steffen Corbe, 18. February 2019

3D-CFD-simulations for the verification and optimization of a vortex dropshaft with two-way inflow.

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Mattias Deller, 12. September 2018

The retention time in a fresh water tank has been modeled, using a thermo - hydraulic approach. It could be shown that the steel walls heated by the sun influence the circulation inside the water tank and that compared to a purely hydraulic simulation different retention times are to be expected.

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Steffen Corbe, 23. February 2017

Cooperation with the VAW, ETH Zurich, on "Aeration and two phase flow characteristics of bottom outlets"

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Steffen Corbe, 07. Februar 2017

HOLINGER SA in Luxembourg invited their customers to a customer event staged at BIODIVERSUM in the "Haff Réimech" nature reserve. Steffen Corbe spoke on 3D CFD simulation in water management (Updated slides in German)

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