Axial-flow compressor aerodynamics: exit flow deviation dependence In an axial-flow compressor, the deviation of the exit flow angle from the blade angle primarily depends on which geometric/flow parameters? Choose the correct option.
Mechanical Engineering
Compressors, Gas Dynamics and Gas Turbines
Difficulty: Medium
Choose an option
-
ABlade camber
-
BBlade camber and incidence angle
-
CSpace–chord ratio
-
DBlade camber and space–chord ratio
Answer
Correct Answer: Blade camber and space–chord ratio
Explanation
Concept/ApproachExit flow angle deviation is an empirical/physics-based function of profile camber and cascade solidity (space–chord ratio). Greater camber and lower solidity (higher space–chord) typically increase deviation due to boundary-layer and turning limits.
Why other options fall shortCamber alone or space–chord alone are incomplete; incidence is more relevant to loss and stall margin than to the systematic deviation law used in design correlations.
Final AnswerBlade camber and space–chord ratio