Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

If loops in Mathcad

If loops in Mathcad

If loops in Mathcad

hey all,
I am having problems in the if statement.
Actually i am using If statement in a model where in the beginning i had to choose what type of coolantside (eg:coolant or air)
So i have to choose various values like mnu,Rho,Cp etc for the coolant or air ).So i got the equation to correlate this values for various temps.
Now the tough thing is when i put a variable saying i choose

Coldside=Coolant or air (starting of the model)
So for me if i select "coolant" down in the model
I want all my coolant related properties to be selected and put in the respective equations.
And also if i select the "Air" it should automatically give the air properties.

I guess i am pretty clear .

Thank u

RE: If loops in Mathcad

You might peruse the Mathsoft Collaboratory.  This subject has come up before.  There have also been some Mathsoft newletter articles about this subject.



RE: If loops in Mathcad


If you had a lot of values, it might be easier to use the "if" function to select an index number, then set up a matrix of values.  Use the index number to select the right one.

You might consider using a control component for the initial selection to avoid problems with spelling.

RE: If loops in Mathcad


If you usse a global variable definition for Coldside, then wherever it is in the worksheet, even near the end or in the middle, it will be valid in expressions that precede it.

I always try to put all my inputs at the top of a worksheet, so a user does not have to go hunt for them.  



Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close