Automation CFD analysis is done to understand the physical

Automation is generally carried out
in order to reduce the turnaround time of project. Any optimization techniques
such as Design of Experiment (DOE) need multiple numbers of simulations to be
executed and requires huge amount of pre-processing time along the generation
of simulation model. DOE is the systematic approach to engineering problem
solving to ensure the valid output and is carried out with minimum time and
simulation experiment. DOE
determine the relation between factors affecting a process and the output of
that process.

In this present work, study of
various duct models are carried out to find out the various design parameter
affecting response parameter during optimization process. Computational fluid
dynamics (CFD) provides qualitative and quantitative prediction of the fluid
flow. CFD analysis is done to understand the physical phenomenon of the flow
domain and investigate the variable affecting response parameter which is
related to flow. For limited number of objectives generally trial and error
process is adopted. Trial and error process tend to increase the complexity in
problem and also time consuming.  Analyst
can use statistical DOE technique to reduce number of simulation experiments to
minimize the project turnaround time. So objective is to automate CFD workflow
for the optimization with the use of FluidNexus. FluidNexus generates the
simulation model for each run by using single abstract model and Computer Aided
Drafting (CAD) geometry. Post processing is done using AcuReport Tool and by
analyzing these reports the optimum geometry is decided. This whole process is
integrated to automate the optimization.

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            2 level DOE is used in optimization
of pipe while 3 level DOE is used in optimization of air inlet duct. For
straight pipe, for selected design of experiment model having length XX mm and diameter XX
mm (i.e. Model 3) results shows XX Pa pressure
drop, which lowest among the various run in design of experiment. Similarly for
air inlet duct, from selected design of experiment model having elliptical
cross section (a=b), curvature of radius XX mm
and no taper cross section along the bend with maximum diameter of pipe XX mm
gives pressure drop is XX Pa which is optimal
design among proposed design of experiment.