Discussion Groups

Simulation CFD

Reply
*Expert Elite*
OmkarJ
Posts: 436
Registered: ‎10-02-2012

Perforated sheet with hexagonal holes!?

197 Views, 2 Replies
04-10-2013 07:27 AM

Hi

 

I want some good literature on performance of perforated sheet with hexagonal holes. While Idelchik's "Handbook of Hydraulic Resistance" has abundant information about circular hole patterns, it has no mention of hexagonal holes.

 

Entire day of searching and I could stumble upon just two references. One is a published paper claiming hexagonal holes produce smaller pressure drop than circular ones, and other is a patent (yea, I have to search patents now, in the absence of literature :smileyfrustrated:) which claims the velocity distribution for hex holes is smooth etc.

 

I want some good literature that gives resistance coefficients for different percentages of open areas and thickness to hole diameter ratio etc, or at least something. I can always do a unitary cell symmetric arrangement of hexagonal hole to understand the characteristics, but it is time consuming and it is not possible to cover all types of perf sheets in limited time.

 

Thanks
OJ

Please use plain text.
Member
abhijit.kulkarni
Posts: 4
Registered: ‎04-02-2013

Re: Perforated sheet with hexagonal holes!?

04-17-2013 09:32 PM in reply to: OmkarJ
Please use plain text.
*Expert Elite*
OmkarJ
Posts: 436
Registered: ‎10-02-2012

Re: Perforated sheet with hexagonal holes!?

04-18-2013 08:26 PM in reply to: abhijit.kulkarni

The supplier's knowledge is limited to circular holes, which are abundantly covered in Idelchik and other published literature. Hexagonal holes is relatively new concept and hasn't been study (it seems) enough. 

 

OJ

Please use plain text.