×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Combined Specific Gravity of a Mixture of Liquid and Gas

Combined Specific Gravity of a Mixture of Liquid and Gas

Combined Specific Gravity of a Mixture of Liquid and Gas

(OP)
Hi, all. I am currently working on a problem where we have a flow in a line that is about 50% liquid and 50% gas. I know the specific gravity of the liquid, but always assume a specific gravity of 0 for the gas. How would I go about calculating the specific gravity of the combined contents of the line? Thanks in advance for the help!

RE: Combined Specific Gravity of a Mixture of Liquid and Gas

If it's 50/50 based on volume, you could just take 50% of the specific gravity of the liquid.
Flow could be highly erratic if you have low spots and high spots in the line. With uniform slope, you could have the vapor moving a lot faster than the liquid.
If you know exact composition and have design data for that product, it'd be easy enough to work out.
With water, use the steam charts, the steam "quality" is the critical number.
For design gravity loading, I would assume completely full of liquid.

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


Resources

White Paper - A Guide to 3D Printing Materials
When it comes to using an FDM 3D printer effectively and efficiently, choosing the right material at the right time is essential. This 3D Printing Materials Guide will help give you and your team a basic understanding of some FDM 3D printing polymers and composites, their strengths and weaknesses, and when to use them. 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