Sum of shear force components in direction of fluid flow - Fluid Mechanics

Q.  The sum of components of shear forces in the direction of flow of fluid is called as
- Published on 05 Aug 15

a. shear drag
b. friction drag
c. skin drag
d. all of the above

ANSWER: all of the above

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    Discussion

  • Pankaj   -Posted on 05 Oct 15
    We know that the drag force can be defined as the component of the total force exerted by fluid on a body in the direction parallel to the direction of motion. Therefore the sum of components of shear forces in the direction of flow of fluid is called as friction drag or skin drag or shear drag.

    Friction drag or skin drag or shear drag can be defined as the drag occurs due to the friction of fluid against the surface of an object that is moving through it.

    Turbulent flow creates more skin friction as it creates much larger boundary layer than laminar flow.

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