Fluid Dynamics

The intelligent way to optimally use nozzles

When considering flows, turbulence and highly complex spray processes, nobody knows the possibilities better than we do. Just as no one knows your requirements better than you. Together we can find out how to use all your potential.


We do not promise perfection - we expect it.

For well over a century, we have been developing and producing nozzles and nozzle systems for a many different applications. This resulted in a unique understanding of spray and atomisation processes in a variety of applications over a wide range of pressures, temperatures and atmospheres. We are constantly working to improve the precision and efficiency and open up new application areas.

For simple geometries such as a straight piece of pipe, the flow state is still relatively easy to calculate using paper, pencil and calculator. If there is just a slight curve, this is then not so easy. Here, Computational Fluid Dynamics (CFD) is required.


We have use our expertise from many decades of nozzle development for these simulations. Conversely, CFD was initially just an internal tool that aided us in developing a desired nozzle faster and more accurately. Our high-performance clusters with a computing power of around 8,500 GFlops allows us to offer our knowledge as a service today. We simulate nozzle applications and processes individually for your environment and your requirements. This ensures that everything runs optimally in the real world. Talk to us!

Flow simulation as a service

CFDLaval nozzle simulation (left), scrubbing tower for treating process gases (right)

Our offer

  • Calculation of the flow field including the pressure losses with one or more flowing media in piping and fittings.
  • Spray spreading including heat and mass exchange with the surrounding gases under almost all conceivable environmental conditions.
  • Calculation of nozzle internal flows and prediction of the spray pattern, the water distribution, the spray characteristics and droplet sizes near the nozzle.

Our expertise

  • Over a century of experience and expertise in the field of spray processes and nozzle development.
  • Over a decade of experience using CFD analysis for spray generation, spread and application.
  • High performance computer for complex CAE applications.
  • Professional spray laboratories with specialised measurement equipment for practical tests and validations.

Your benefits

  • Maximum efficiency
    • when using expensive consumables
    • in the geometric measurement of the entire spray process
  • Targeted optimisation
    • of the choice of nozzles
    • of the nozzle operating point (considering the pumps, compressor and flowers)
    • of the liquid distribution
    • of the droplet sizes
    • of the inflow and outflow of your process gases to the spraying process.

Fluid Dynamics in action - customer-specific process optimisation


Even with spray processes that have been running smoothly for years there is usually a considerable potential for optimisation. Using our process simulations we can fine these without interfering with the ongoing production. In this way, different settings can be tested, checking their impact on total yield. Here we rely on a clearly defined workflow:

  • Project definition
  • Inventory analysis using CFD to define the initial situation and identify the potential for optimisation
  • Optimisation using CFD for virtual review and evaluation of individual measures
  • Implementation

Your benefits

  • Identification of optimisation potentials
  • Virtual evaluation of individual measures
  • Risk-free, virtual trials
  • Time-saving
  • Identification of potential savings
  • Clear amortisation analysis

Use our engineering experience to your advantage. We are happy to assist you with our expertise acquired over many decades with your process optimisation. Contact us right now. We would be happy to define the work package together with you and submit a concrete offer.

Fluid dynamics process simulations

Prozesssimulation "Berührungsfrei verdunstet"

Contact-free evaporation

Holistic optimisation of evaporative coolers

Fluid dynamics process simulations - Project: Contact-free evaporation
Prozesssimulation "Sauber gerechnet"

Cleanly calculated

Washing tower for the treatment of process gases

Fluid dynamics process simulations - Project: Cleanly calculated
Prozesssimulation "Echt ätzend"

Really corrosive

Sulfuric acid injection for the purification and cooling of process gases with sulphur trioxide

Fluid dynamics process simulations - Project: Really corrosive


Boris SchmidtPhone +603 6142 1288 (General Line)Fax +603 6156 1153info(at)lechler.com.my

Further information

Brochure CFD