|July 9, 2012, 03:32||
Wall roughness in pipes
Join Date: Jun 2012
Posts: 19Rep Power: 6
I am trying to test the effects of wall rougness in straight pipes in FLUENT but the results are not compatible with corresponding values in literature. For instance, I have a 50-millimetre-diameter pipe with water flowing through it at about 2 m/s. I want to compare two cases, a smooth pipe and a pipe of roughness k = 0.01 mm. When I run the calculation, though, the results are almost identical (f1 = 0.017459, f2 = 0.017462) whereas the literature values differ significantly (f1 = 0.01738, f2 = 0.019054607). Might this only be due to the mesh being too coarse? At least the result for the smooth pipe resistance coefficient is very near to the literature value. I assume the variable roughness hight is FLUENT corresponds to the standard roughness values given in mm.
Thank you for helping!
|pipe, roughness hight, wall roughness|
|Thread||Thread Starter||Forum||Replies||Last Post|
|mergeMeshes problem||Attesz||OpenFOAM Mesh Utilities||3||July 29, 2015 04:15|
|Laminar flow and wall roughness||junbbung||FLUENT||1||December 2, 2012 06:57|
|Boundary Layer roughness/ low reynolds wall treatment||Luigi_||STAR-CCM+||1||March 14, 2012 09:40|
|Errors running allwmake in OpenFOAM141dev with WM_COMPILE_OPTION%3ddebug||unoder||OpenFOAM Installation||11||January 30, 2008 21:30|
|Wall Roughness Error||Ken||FLUENT||1||April 23, 2007 12:59|