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2-Guest

## Solve 2 equation system

Hi guys!

I am a totally beginner in MathCAD and trying to solve a system of two equations.

On one hand I have volume as a function of Pressure (V=f(Ps)) and other known parameters.

Then I have two equations of compressor Head, one as a function of Ps (and other known parameters) and the other as a function of Volume again. So I could equal both equations of Head and have one equation with two variables V and Ps.

The thing is I can't find how to find Ps and/or V to satisfy the equations...

Many thanks.

ACCEPTED SOLUTION

Accepted Solutions
25-Diamond I
(To:scjorge)

One way to do it is to turn Volume, Head, etc. into functions of the so far unknown Ps and then use one of Primes numerical methods to solve the equation Head_2 = Head/1000 for Ps.You may either use the "root" command or a solve block.

See both methods in the attached file (Prime 5 format)

2 REPLIES 2
25-Diamond I
(To:scjorge)

One way to do it is to turn Volume, Head, etc. into functions of the so far unknown Ps and then use one of Primes numerical methods to solve the equation Head_2 = Head/1000 for Ps.You may either use the "root" command or a solve block.

See both methods in the attached file (Prime 5 format)

2-Guest
(To:Werner_E)

Werner_E thanks a lot for the solution.

It is exactly what I needed!

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