×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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

how to define the K-value for the connection between a pipe and sphere bottle

how to define the K-value for the connection between a pipe and sphere bottle

how to define the K-value for the connection between a pipe and sphere bottle

(OP)
Hi all, I tried to model the connection between a pipe and sphere bottle in a Recip compressor package, but don't know how to define the k-value for this fitting?
Can anyone give some hints? Thanks

RE: how to define the K-value for the connection between a pipe and sphere bottle

Are you referring to the flexibility of the bottle connection or the accoustic resonance condition?

RE: how to define the K-value for the connection between a pipe and sphere bottle

(OP)
Hi hacksaw, thanks for the reply. yes, the sphere bottle is used for pulsation control, and I am trying to model the connection between the bottle and the pipes. No idea how much the K value I should define for it.

RE: how to define the K-value for the connection between a pipe and sphere bottle

(OP)
Hi GregLocock, thanks for the reply, and where should I go for the acoustics questions?

RE: how to define the K-value for the connection between a pipe and sphere bottle

Good, we've established that it's acoustic and it sounds as if you are talking about a Helmholtz resonator.

In the normal equation k is the stiffness of the gas spring (the big volume) and m is the mass of the slug of air in the neck.

Wiki is your friend.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

RE: how to define the K-value for the connection between a pipe and sphere bottle

Or are you referring to the loss coefficient for the fitting?

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

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