flow simulation

Theory and practice

Flow simulations are based on the numerical solution of the Navier-Stokes-equations which area an analytic description of flow processes. Those equations can be combined with equations on energy and material transport to display heat transport or distributions of concentrations.

CFD (Computational Fluid Dynamics) simulation technology means that the infinite number of degrees of freedom that a fluid continuum has can be projected to a finite number of points in space and converted into matrix equations by means of suitable mathematical procedures. The discretion is done using CFD software program that enable the user to resolve the complex equation systems on modern computers with reasonable effort.

Here are some examples of possible calculations:

sonic and sub-sonic flows

Laminar and turbulent flows

stationary- or transient flow calculations

mixing of gases, liquids and particles free and forced convection

multi-phase mixtures

chemical reactions; particle, gas, liquid, surface reactions

adsorption, absorption

heat radiation

Electric field forces

electric field forces abrasion of materials or growing on surfaces or particle growth

phase change: evaporate, condense, solo exploding, melting, sublimation

convection in pumps and fans, optimization and wear reduction

aerodynamics

aero acoustics

filling processes

Complex very simple:

Heat exchanger design & construction

Flue gas flow shrinkage optimization

Steam heat exchanger optimization

Air conditioning warehouse with greenhouse and cold rooms

Industrial wastewater tower concept study / performance increase

Concept review / energy efficiency of municipal wastewater

Flow optimization flue gas steam heat exchanger

Wastewater basin aeration- particle settling behavior

Air conditioning boiler house

Industrial boiler gas combustion

Gas turbine exhaust system

FAQ

Common questions

Is it worth investing in flow simulation for my project?

Of course, this decision depends on the project, just present your concern to us so that we can discuss the applicability together.

From our experience we can say that new, useful insights can always be generated from the discussion. Moreover, in addition to a better understanding, interesting ideas for new products also emerge.

Can flow simulations reflect reality at all? Are the calculations accurate enough?

The accuracy of the results depends strongly on the input parameters such as start sizes, boundary conditions and geometry. In addition, a crucial question is which model complexity, i.e., which effort, is applied to answer a question. So very accurate models can be created for predictions of velocities, pressure losses, temperatures or chemical components. However, the question must always be kept in focus as to whether a simpler and cheaper model does already have sufficient validity.

Couldn't we have the flow simulation carried out internally better?

This is not a simple question. It certainly always makes sense to build up your own competence. We are glad to advise you with our experience on this topic. An important keyword is the interpretation of the simulation results. How are the results to be interpreted for an application in order to be able to make the right decision. We have the answers for you!