Gearslutz.com - View Single Post - Could someone help out interpreting material's gas flow properties

Brainchild · 12th March 2009

Actually, ralys/m is the flow resistivity value. So, 200 kPa s/m2 = 200,000 rayls/m. It would be like putting 200,000 in the field in the absorber calculator where you have 8,000.

In the case you used, the flow resistivity is 8,000 rayls/m [8 kPa s/m2]. So, for 40mm of material, the specific absorption is about 320 rayls.

So, in this case, you would want a material with an Rs value of 320 rayls for 40mm thickness. That number would only apply to the specific thickness of that particular product.

12th March 2009	#53
Brainchild Lives for gear Joined: Jan 2009 Location: USA Posts: 987	Actually, ralys/m is the flow resistivity value. So, 200 kPa s/m2 = 200,000 rayls/m. It would be like putting 200,000 in the field in the absorber calculator where you have 8,000. In the case you used, the flow resistivity is 8,000 rayls/m [8 kPa s/m2]. So, for 40mm of material, the specific absorption is about 320 rayls. So, in this case, you would want a material with an Rs value of 320 rayls for 40mm thickness. That number would only apply to the specific thickness of that particular product.