×
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

Dynamic analysis & 2-phase flow
2

Dynamic analysis & 2-phase flow

Dynamic analysis & 2-phase flow

(OP)
I'm new to dynamic modeling in Caesar II, so please bear with me.

I'm analyzing a gas hydrotreater on which the heater feed piping is vibrating.  (A little background: Hydrogen gas is dumped into the gas oil prior to a series of interchangers.  After the interchangers, the 2-phase mixture is fed into the heater.)

Our client wanted not only a static analysis to resolve issues with the pipe supports, but also a 2-phase flow analysis and a dynamic analysis.

Our process guys indicate that the predicted 2-phase flow regime is not the cause of the vibration.  So, I am having to do a dynamic analysis in Caesar II to try to find out what's causing it.

My question is, if all I have are flow velocities, pressure drop, and pipe and fluid properties, is this enough information to complete a dynamic analysis in Caesar II?

I should note that we do not have slug flow (it's annular-dispersed), and no occasional shock loads (i.e., no quick-closing valves, no wind loads, no vibrating equipment, etc).  I'm also curious to know just what Caesar's capabilities are, and will my static analysis (placement/type of supports) be affected by the outcome of the dynamic analysis?

Thanks in advance for your help.

RE: Dynamic analysis & 2-phase flow

KLee777,

Although this forum is great, you'll probably get more response by also posting this on COADE's CAESAR II forum.

I've attached the link below.

http://www.coade.com/support_discussion.asp

Good luck,

NozzleTwister
Houston, Texas

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!


Resources