Extra Flashcards
(7 cards)
1
Q
What is an analogy to the Biot Sarvat Law in Electromagnetism?
A
Amperes Law
2
Q
What is Kelvin Helmholtz instability?
A
- A perturbed vortex sheet evolves nonlinearly, leading to wave steepening and vortex roll-up.
- This instability explains the formation of turbulence in shear layers.
3
Q
What are the Helmholtz Theorems?
A
Vortex lines are material lines
Irrotational fluid points remain irrotational
Vortex tubes’ circulation remains constant
4
Q
What is Kelvins theorems?
A
Kelvin’s Theorem: In an inviscid, barotropic fluid, the circulation of a closed material curve remains constant with time, assuming the acting volume force has a potential.
5
Q
What do the Kutta Jowkowski Equations Give?
A
This equation provides the result for the resulting pressure force on a closed, two-dimensional body exposed to a free stream.
6
Q
What is the formula for the pressure coefficient?
A
(p - p_infinity)/ [(rho/2)U_infinity^2]
7
Q
A
