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1D and 3D Co-Simulation Between Flowmaster and CFD Packages
Introduction
In today’s competitive engineering world, reducing overall design time and costs
have become key factors to the future success and growth in many parts of the
industries. 1D and 3D tools are leading the way to meet such engineering and
business challenges. This process can be further strengthened or enhanced with
utilising coupling methods between 1D and 3D tools, which can provide strengths
from both approaches.
Interaction between CFD (such as FLUENT and STAR-CD) software and Flowmaster
can enable design or system engineers to build virtual prototype test bed or models
for small or large systems, thereby reducing significant prototyping costs and design
time. For example, in the automotive industry various parts of the Underhood vehicle
thermal management system are simulated using CFD packages. Such models
with complex geometry consist of many hundreds of thousands of cells and take
considerable time to construct and validate. Modelling in isolation can compromise
the accuracy of the overall system performance. At the same time, at the earlier
design stage it is impractical to represent a complete system in CFD that consists of
water jacket, pump, expansion tank, valves, heat exchangers, grills, thermostat etc
with individual physical characteristics. In such scenarios, 1D modelling can provide
a significant advantage by both reducing model complexity and computational design
time. This can allow the engineers to design and analyse system performance more
rapidly.
By coupling 1D and 3D models together it can provide a more flexible and robust
approach in fluid system design that can be utilised throughout the design cycle in
numerous applications.
