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Angewandte Regelung und Optimierung in der ... - uni-stuttgart

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Gauss-Jordan Simplification<br />

Setup of l<strong>in</strong>earized equations system<br />

• Once all nodes selected have been elim<strong>in</strong>ated, the equation system<br />

can be reconverted to a nonl<strong>in</strong>ear one us<strong>in</strong>g follow<strong>in</strong>g assumptions<br />

• R n,m = 100 (Roughness)<br />

• D=L (D)iameter and (L)ength of pipe<br />

⎛ ⎛<br />

⎜<br />

⎜<br />

⎜ g~<br />

⎝<br />

⎜<br />

⎜⎛<br />

⎜<br />

⎜<br />

⎜−<br />

g~<br />

⎝⎝<br />

22<br />

N ,2<br />

g~<br />

2,1<br />

− g~<br />

g~<br />

1,2<br />

11<br />

...<br />

g~<br />

N ,1<br />

− g~<br />

g~<br />

11<br />

⎞<br />

⎟<br />

⎠<br />

1,2<br />

⎞<br />

⎟<br />

⎠<br />

...<br />

...<br />

...<br />

⎛<br />

⎜−<br />

g~<br />

⎝<br />

⎛<br />

⎜ g~<br />

⎝<br />

2, N<br />

0.54g g~<br />

−0.46<br />

n, m<br />

| hn<br />

− hm<br />

| =<br />

N<br />

g~<br />

−<br />

g~<br />

...<br />

g~<br />

−<br />

g~<br />

N ,1<br />

11<br />

2,1<br />

11<br />

g~<br />

nm<br />

g~<br />

1, N<br />

1, N<br />

⎞⎞<br />

⎟<br />

⎟<br />

⎟⎛<br />

δh<br />

⎠ ⎜<br />

⎟<br />

⎜ ...<br />

⎞ ⎟<br />

⎜<br />

⎟<br />

⎟ ⎝δh<br />

⎠ ⎟<br />

⎠<br />

2<br />

N<br />

⎛<br />

⎜ δq<br />

⎞<br />

⎟ ⎜<br />

⎟ = ⎜<br />

⎟ ⎜<br />

⎠<br />

⎜δq<br />

⎝<br />

nod<br />

2<br />

nod<br />

N<br />

+<br />

+<br />

g~<br />

g~<br />

...<br />

g~<br />

g~<br />

2,1<br />

1<br />

N ,1<br />

1<br />

δq<br />

δq<br />

nod<br />

1<br />

nod<br />

1<br />

⎞<br />

⎟<br />

⎟<br />

⎟<br />

⎟<br />

⎟<br />

⎠<br />

D<br />

n,<br />

m<br />

⎛ g<br />

⎜<br />

⎝ 3.58821⋅10<br />

n,<br />

m<br />

= Ln,<br />

m<br />

=<br />

−4<br />

⎞<br />

⎟<br />

⎠<br />

1<br />

2.09<br />

© ABB Group<br />

June 28, 2010 | Slide 63

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