Absolute Roughness of Hoses?
Absolute Roughness of Hoses?
(OP)
Hi,
I am currently calculating pressure losses through my oil circuit and would like to know if anyone has typical absolute roughness values to use for hydraulic hoses? I am using Aeroquip hoses -16 (1 inch) size.
I read somewhere that 0.0001 feet is a conservative number to use?
Does anyone have technical info on this?
Regards,
Gabriel
I am currently calculating pressure losses through my oil circuit and would like to know if anyone has typical absolute roughness values to use for hydraulic hoses? I am using Aeroquip hoses -16 (1 inch) size.
I read somewhere that 0.0001 feet is a conservative number to use?
Does anyone have technical info on this?
Regards,
Gabriel





RE: Absolute Roughness of Hoses?
Take one out.
"I am sure it can be done. I've seen it on the internet." BigInch's favorite client.
http://www.youtube.com/watch?v=hpiIWMWWVco
"Being GREEN isn't easy." Kermit
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RE: Absolute Roughness of Hoses?
h
and then use your own pressure drop calculator to find their roughness value by trial and error you will see that they use your value of 0.0001" (or 0.0305 mm).
Generally the questions that come up about the roughness of "hose" are difficult to answer because the term "hose" can cover such a wide range of types, but if you are using a quality hydraulic hose then your value looks OK to me.
Katmar Software
Engineering & Risk Analysis Software
http://katmarsoftware.com
RE: Absolute Roughness of Hoses?
Katmar Software
Engineering & Risk Analysis Software
http://katmarsoftware.com
RE: Absolute Roughness of Hoses?
Yes I had just found the Gates calculator this morning and it pretty much gives me the same results.
I will keep that for future reference!
Thank you so much!
RE: Absolute Roughness of Hoses?
RE: Absolute Roughness of Hoses?
Katmar Software
Engineering & Risk Analysis Software
http://katmarsoftware.com
RE: Absolute Roughness of Hoses?
RE: Absolute Roughness of Hoses?
Katmar Software
Engineering & Risk Analysis Software
http://katmarsoftware.com
RE: Absolute Roughness of Hoses?
ps. I use Excel sheets to do my pressure drop calculations!!