In the simulation of various power plants (including marine diesel engines, that is what I am interested in) the performance of the turbocharger is very important. However, having extensive information regarding compressor performance (in particular compressor maps) is not a very usual situation.
However, on the other hand, it is often the case that limited information about the performance of a turbocharger (e.g. flow rates and temperatures for 3-4 points) is available.
My question is: is there any approximated method for the calculation of turbocharger performance when only limited data about the turbocharger itself is available?
You have serious complicated problem. This is a project in engine simulation.
You asking for a transient dynamic simulation for the turbocharger. The simplest way to provide a zero order(thermodynamic) model for the case with flexible plums and modify it by your own experimental information. Then you may have a dynamic simulator based on a static model for start up and shut dawn. At all, please the transient simulation texts as well.
We got the same problem. An without a perfect answer. The way I was planning to go is to use generic turbocharger curves and try to fit them in the data we have, which is always limited as you say.
I found some time ago the following paper:
M. Casey, C. Robinson, A method to estimate the performance map of a centrifugal compressor stage, Journal of Turbomachinery (ASME), 2013 Vol 135.
The described method is supposed to do exactly what I/we need. However, I did not manage to implement it in my code (due to my limited knowledge to some of the underlying physical and modelling principles I guess?)
But if somebody is interested this looks like a possible way to do it.
I coded a similar procedure based on older articles of Nick Baines, Ed Swain, Aungier and Japikse some time ago. Since the proprietary interest of the code is with a different company I am interested in coding a modern version for use in public domain. The problem is to find adquate test data for validation of the loss coefficients. If anybody provides the experimental data I am happy to do the coding.
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