Previous in Forum: Under Ground Pipe Thickness Calculation   Next in Forum: Piston Compressor
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
2 comments
Rate Comments: Nested
paresh_career001
Power-User

Join Date: Oct 2008
Location: Gujarat, India
Posts: 142

Area, Volume, and Hydraulic Diameter for Regenerator

02/02/2013 1:48 AM

Hello experts,

I know I am asking a very basic question but I need to confirm that during one dimensional analysis of regenerator (Pipe having matrix material), what should be the area, volume and hydraulic diameter of it? Suppose I need to calculate Reynolds number, does it mean I need to take hydraulic diameter as 'dx' as width of one dimensional cell? Does 'dx' represent area as well as volume?

__________________
 Paresh B. Gujarati
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
nick name
Guru

Join Date: Mar 2007
Location: City of Light
Posts: 3943
Good Answers: 183
#1

Re: Area, Volume, and Hydraulic Diameter for Regenerator

02/03/2013 3:53 AM

Th hydraulic diameter is a FICTION Dh= 4*A/P used for similitude at the Reynolds computation. It is invented in order to allow a way to compare flows in different sections since Re= w*Dh/ν where w= flow velocity and ν= kinematic viscosity.

A is the section normal to flow area and P the total perimeter of contact flow to wall.

You should NOT use Dh for other reasons than to compute Re and the friction coefficients which depend on its value.
Register to Reply
paresh_career001
Power-User

Join Date: Oct 2008
Location: Gujarat, India
Posts: 142
#2
In reply to #1

Re: Area, Volume, and Hydraulic Diameter for Regenerator

02/03/2013 7:00 AM

Yes sir, You are right but I want to know the value of diameter and volume as well as area if we are talking about a 1 dimensional domain (which is circular in shape in actual shape)

__________________
 Paresh B. Gujarati
Register to Reply
Register to Reply
Have a Different Question?
2 comments

Previous in Forum: Under Ground Pipe Thickness Calculation   Next in Forum: Piston Compressor

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Mechanical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (77 right now)
Show Members
Advertisement