Eng-Tips is the largest forum for Engineering Professionals on the Internet.

Members share and learn making Eng-Tips Forums the best source of engineering information on the Internet!

Register Log in
  • Congratulations JStephen on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Lung modeling 1

Status
Not open for further replies.
EcoMan

EcoMan

Mechanical
Joined
Nov 17, 2001
Messages
54
Location
US
Hello,
Left and right lungs are pneumatically in parallel. The compliances of springs in parallel add as reciprocals, so why do lung compliances add directly?
 
Sort by date Sort by votes
Interesting observation. The definition of compliance varies between engineering fields. In pneumatic systems compliance is the volume change (or flow rate) divided by pressure drop, and parallel lungs have the same pressure drop. Mechanical springs are the opposite; compliance is the displacement divided by the force and parallel springs share the same displacement. Electric circuits are similar to pneumatic systems in that regard: compliance is the current divided by the voltage drop and parallel resistors share the same pressure drop.

Nagi Elabbasi
Veryst Engineering

Nagi Elabbasi
 
Upvote 0 Downvote
Status
Not open for further replies.

Similar threads

vivian12
  • Locked
  • Question Question
New coronavirus spike protein has been shown to inhibit lung cancer development
Replies
1
Views
2K
EdStainless
EdStainless
Justin O
  • Locked
  • Question Question
LS-DYNA Mitral Valve Modeling Help
Replies
3
Views
330
rstupplebeen
rstupplebeen
MattBD
  • Locked
  • Question Question
silicone elastomer modeling
Replies
0
Views
139
MattBD
MattBD

Part and Inventory Search

Sponsor

Back
Top