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  2. Helmholtz's theorems - Wikipedia

    en.wikipedia.org/wiki/Helmholtz's_theorems

    A fluid element that is initially irrotational remains irrotational. Helmholtz's theorems apply to inviscid flows. In observations of vortices in real fluids the strength of the vortices always decays gradually due to the dissipative effect of viscous forces. Alternative expressions of the three theorems are as follows:

  3. Hamiltonian fluid mechanics - Wikipedia

    en.wikipedia.org/wiki/Hamiltonian_fluid_mechanics

    Take the simple example of a barotropic, inviscid vorticity-free fluid. Then, the conjugate fields are the mass density field ρ and the velocity potential φ. The Poisson bracket is given by {(), ()} = and the Hamiltonian by:

  4. Euler equations (fluid dynamics) - Wikipedia

    en.wikipedia.org/wiki/Euler_equations_(fluid...

    Thus for an incompressible inviscid fluid the specific internal energy is constant along the flow lines, also in a time-dependent flow. The pressure in an incompressible flow acts like a Lagrange multiplier , being the multiplier of the incompressible constraint in the energy equation, and consequently in incompressible flows it has no ...

  5. Kutta condition - Wikipedia

    en.wikipedia.org/wiki/Kutta_condition

    In irrotational, inviscid, incompressible flow (potential flow) over an airfoil, the Kutta condition can be implemented by calculating the stream function over the airfoil surface. [ 8 ] [ 9 ] The same Kutta condition implementation method is also used for solving two dimensional subsonic (subcritical) inviscid steady compressible flows over ...

  6. Potential flow - Wikipedia

    en.wikipedia.org/wiki/Potential_flow

    In fluid dynamics, potential flow or irrotational flow refers to a description of a fluid flow with no vorticity in it. Such a description typically arises in the limit of vanishing viscosity , i.e., for an inviscid fluid and with no vorticity present in the flow.

  7. 15 Most Common Puppy Health Issues and How to Spot Them - AOL

    www.aol.com/15-most-common-puppy-health...

    Things will fall on the floor of course, so teach your dog “leave it” and “drop it” while still a young puppy. Help Your Puppy Avoid These Health Issues. As puppies grow up, there may be ...

  8. Potential flow around a circular cylinder - Wikipedia

    en.wikipedia.org/wiki/Potential_flow_around_a...

    In mathematics, potential flow around a circular cylinder is a classical solution for the flow of an inviscid, incompressible fluid around a cylinder that is transverse to the flow. Far from the cylinder, the flow is unidirectional and uniform. The flow has no vorticity and thus the velocity field is irrotational and can be modeled as a ...

  9. Woman, 53, Has ‘Never Felt Better' After Undergoing Pig ...

    www.aol.com/woman-53-never-felt-better-111429861...

    An Alabama woman "is recuperating well" after undergoing a pig kidney transplant in New York City, per reports. Towana Looney, 53, underwent surgery using the organ from a genetically manipulated ...

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