User:Lothar.brendel

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Revision as of 07:42, 10 July 2024 by Lothar.brendel (talk | contribs) (→‎Scratch Pad: +Hamiltons)
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Lothar Brendel

"Admin" of this Wiki

Scratch Pad

2D flow in polar coordinates (ρ,ϕ)

  • vorticity: ω=(×v)ez=ρvϕ+vϕϕvρρ
  • its gradient: ω=eρρω+eϕρϕω

Energy equation

E=ρe+ρ2u2E=E+ρϕtE=tE+ϕtρ=((E+P)u)=((E+P)u+ϕρu)=((E+P)u)ϕ(ρu)uρϕtE=((E+P)u)+uf

Hamiltons principle