Fluid Force Direction on Airfoil: Compressor vs. Turbine Design

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SUMMARY

The discussion centers on determining the direction of fluid forces exerted on an airfoil in compressor and turbine designs. In Case 1, when designed as a compressor, the force moves downward, while in turbine design, it moves upward. Conversely, in Case 2, the compressor design results in an upward force, whereas the turbine design leads to a downward force. The participants emphasize that the direction of forces remains consistent across both cases, contingent on the design type of the airfoil.

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  • Understanding of fluid dynamics principles
  • Familiarity with airfoil design concepts
  • Knowledge of compressor and turbine mechanics
  • Basic grasp of force direction in three-dimensional space
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  • Research the differences between compressor and turbine airfoil designs
  • Learn about pressure and suction sides of airfoils
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Aerospace engineers, mechanical engineers, students studying fluid dynamics, and professionals involved in compressor and turbine design will benefit from this discussion.

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Homework Statement



Find the direction of the force exerted by the fluid to the airfoil.

Homework Equations



N/A

The Attempt at a Solution



I think that's the forces direction (x is horizontal and z is vertical) for 2 cases. In case I am dealing with either the compressor or turbine, will the solutions change?

I know that:
-If case 1 is designed for the compressor, it will move downward and if case 1 is designed for the turbine, it will move upward.
-If case 2 is designed for the compressor, it will move upward and if case 2 is designed for the turbine, it will move downward.

I am guessing my directions (forces exerted by the fluid on the airfoil/blade) stay the same.

Are my directions right in those 2 cases? Thank you.
 

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the first case is right i think but i didn't understand the second case completely the given figures are not clear
 
dineshnaveen said:
the first case is right i think but i didn't understand the second case completely the given figures are not clear

It's exactly the same except the pressure side and suction side reversed. I'd guess that the z direction has to change but then I am not so sure that first case is even right.
 

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