[unclewallcn]

Dear all,

Take the centrifugal pump as an example, we can get the pressure or velocity distribution of the impeller.

But what's the value? And how to use these analysis to get an optimization ideal?

Thank you for your attention.

[ghorrocks]

Yes, you can get the pressure or velocity distribution from a CFD model.

And you are very perceptive to note that CFD simulation does not automatically lead to a better product. CFD is just like an experimental test - you give it a configuration and the test tells you how good it is. The hard part is to know how to use the result to improve the design. So consider CFD as just another experiment.

But to answer your question of how to use CFD results to improve designs - I will refer you to textbooks on turbomachinery design, heat exchanger design, or what ever the device you are modelling is. The design process is very different for different piece of machinery.

[unclewallcn]

Thank you for your answer.

I agree with your viewpoint that CFD can be seen as a numerical experiment. But basically, we spend a lot of time and resources getting the numerical results.
So, we should get more useful information about our product rather than a good or frustrating test.

BTW, please recommend some design textbooks on turbo machinery.
I would appreciate it for your kind reply.

[ghorrocks]

The textbook I use is "Fluid Mechanics: Thermodynamics of Turbomachinery" by Dixon. But I am no turbomachinery design expert so hopefully some of the others who are more experienced in this area may be able to suggest others.

[fresty]

Glenn's suggested Dixon's book on Turbomachinery is probably the finest out there.. nevertheless to mention a few other good ones IMO:

Turbomachinery Performance Analysis - R.I.Lewis
Principles of Turbomachinery - Seppo A. Korpela