MT-1620 al.2002 Recall that curl f=0→“ conservative" field gravity forces spring forces etc What does that compare to in fluids? rrotational flow Look at how p has been defined and what happens if we place these equations(8-1-8-3)into the plane stress equilibrium equations do 0 f=0 (E1) yy (E2) aX we then get Paul A Lagace @2001 Unit 8-p. 5MIT - 16.20 Fall, 2002 Recall that curl f = 0 ⇒ “conservative” field - gravity forces - spring forces - etc. What does that compare to in fluids? Irrotational flow Look at how φ has been defined and what happens if we place these equations (8-1 - 8-3) into the plane stress equilibrium equations: ∂σxx + ∂σxy + fx = 0 (E1) ∂x ∂y ∂σxy ∂σyy ∂x + ∂y + fy = 0 (E2) we then get: Paul A. Lagace © 2001 Unit 8 - p. 5