How to read data stored in dll file in C++ for sizing control valve

[prmukkundi]

hi friends,

I am Purushottam, a mechanical engineer.I am trying to write a C++ programme to know the characteristics of control valve(i.e cv,coefficient of valve). Before calculating cv, i need to know the density,which is a property of the fluid & that depends on pressure & temperature.So, i mean to say, it has to be read from steam tables.But, till now, we are doing the same thing using simple excel calculation & density & all other properties like enthalpy,qualit y,specific gravity...etc were read from dll file(for steam table) that are linked to the excel file.

Once upstream & downstream of control valve are known then cv can be easily calculated using euations.
But now, i need to do the same using C++.I have been stuck in calculating density,specifi c gravity...etc calculations.
Is it possible to link excel file in C++,so that whenever i give input conditions in C++,required density & all other properties can be read from this excel file.

Any mechanical engineer with sound C/C++ knowledge can get my question easily.But anyother people who can guide me will be highly appreciated.

Experts please give your suggestions.

Thanks.

[sicarie]

hi friends,

I am Purushottam, a mechanical engineer.I am trying to write a C++ programme to know the characteristics of control valve(i.e cv,coefficient of valve). Before calculating cv, i need to know the density,which is a property of the fluid & that depends on pressure & temperature.So, i mean to say, it has to be read from steam tables.But, till now, we are doing the same thing using simple excel calculation & density & all other properties like enthalpy,qualit y,specific gravity...etc were read from dll file(for steam table) that are linked to the excel file.

Once upstream & downstream of control valve are known then cv can be easily calculated using euations.
But now, i need to do the same using C++.I have been stuck in calculating density,specifi c gravity...etc calculations.
Is it possible to link excel file in C++,so that whenever i give input conditions in C++,required density & all other properties can be read from this excel file.

Any mechanical engineer with sound C/C++ knowledge can get my question easily.But anyother people who can guide me will be highly appreciated.

Experts please give your suggestions.

Thanks.

I'd let someone else do the work for you ;).

http://www.google.com/search?hl=en&q...cs&btnG=Search

And if those don't work, try modifying the search - you'll probably find something out there (it sounds like you're really wanting something in 'fluid dynamics' but I'm not 100% sure).

PS - is data or are methods read from the dll file?