Shapes of blade passages in compressors

Q.  The blade passages in a compressor are ________
- Published on 16 Sep 15

a. converging
b. diverging
c. constant
d. unpredictable

ANSWER: diverging


  • Pankaj   -Posted on 16 Oct 15
    Generally, an axial flow compressor is similar in appearance to an axial flow reaction turbine. But there are some differences between both of them.

    If we consider the rotor blades of axial flow compressor and axial flow reaction turbine, it is noticeable that the section of compressor blades are of airfoil section and the area of passages through the blades are different.

    In axial flow reaction turbine, the flow of working fluid is accelerating. Therefore, the blade passages are converging.

    Whereas in axial flow compressor, the flow of working fluid is diffusing or decelerating. Therefore, the blade passages in compressor are diverging.

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