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DG_88713481-Visitor
1-Visitor
May 28, 2021
Solved

How to solve an Equation for Hydrodynamics

  • May 28, 2021
  • 3 replies
  • 2775 views

Hello, 

Today I made my work for Hydrodynamics. It's about this Equation:

DG_8871348_1-1622214540624.png

 

Every Variable except h2 is calculated before and so I'm looking for h2. I have no idea how this could work, the solve function does not work.

Pleas can you help me out with this Problem?

Thenks a lot 😎

Best answer by LucMeekes

Here is one way to solve it:

LucMeekes_0-1622216551277.png

 

(Note that a symbolic solution is not found,

LucMeekes_1-1622216646724.png

I guess because the order of the function is too high.)

 

Success!
Luc

3 replies

W
Werner_E25-Diamond I
25-Diamond I
May 28, 2021

Please attach your worksheet so we can see what was going wrong.

 

The symbolic solve command should probably work OK.

But as all other variables are defined, I would suggest using a numeric solve block (with "find").

 

D
DG_88713481-VisitorAuthor
1-Visitor
May 28, 2021

Thx a Lot for the fast Reply! 

The File of this work is now attached. ... The Text is in German.

L
LucMeekes23-Emerald IVAnswer
23-Emerald IV
May 28, 2021

Here is one way to solve it:

LucMeekes_0-1622216551277.png

 

(Note that a symbolic solution is not found,

LucMeekes_1-1622216646724.png

I guess because the order of the function is too high.)

 

Success!
Luc

    D
    DG_88713481-VisitorAuthor
    1-Visitor
    May 28, 2021

    Thank you very much! 😎

    F
    Fred_Kohlhepp23-Emerald I
    23-Emerald I
    May 28, 2021

    Solved using Prime 4.0 Express.  Openable in any later version.

     

    Express will not calculate solve blocks, but the root function will work.

     

    Shown as an example.

     

     

      ttokoro
      ttokoro21-Topaz I
      21-Topaz I
      May 29, 2021

      image.pngimage.png

      t.t.
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