COMPUTATIONAL FLUID DYNAMICS OF THE TURBULENT AIR FLOW THROUGH A VANED DIFFUSER TURBOCHARGER
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Date
2014-10-10
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Abstract
In this work a numerical study with moving reference frame (MRF) technique is made. Many research works
both experimental and numerical on the impeller-diffuser interactive phenomenon have been undertaken so far. But it is
found from the literature that the study on the impeller-diffuser-volute interaction as well on the performance of the
turbocharger centrifugal compressor by varying the number of diffuser vanes has not been the focus of attention in
these works. Hence a numerical analysis was accomplished in order to extensively explore impeller-diffuser fluid
interaction in a real turbocharger used in military engines applications, when the number of diffuser vanes was
changed at unaltered number of the impeller blades. It was concluded that the number of diffuser vanes gives a
considerable effect on the pressure and temperature at the compressor outlet.