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<< Click to Display Table of Contents >> Centrifugal Compressor |
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► Impeller | Main dimensions 
The Main Dimensions menu item is used to define main dimensions of the impeller. Main Dimensions are forming the most important basis for all following design steps.
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The real flow in a compressor impeller is turbulent and three-dimensional. Secondary flows, separation and reattachment in boundary layers, transient recirculation areas and other features may occur. Nevertheless it is useful - and it is common practice in the compressor design theory - to simplify the realistic flow applying representative streamlines for the first design approach. Employing 1D-streamline theory the following cross sections are significant in particular: •suction area/ inlet (index 1) •leading edge (index LE) •discharge side/ outlet (index 2)
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