Question #632800 on Yade changed: https://answers.launchpad.net/yade/+question/632800
Status: Open => Answered Robert Caulk proposed the following answer: Hello Cheng, >Which Viscosity is used in FlowEngine, dynamic viscosity or kinematic viscosity? FlowEngine computes flow between cells using Poiseuilles law [1], so it is using the dynamic viscosity of the fluid. >I know some parameter value is just for a test, but I am not sure whether any parameters are using SI Unit. YADE is (generally) unitless. You decide which units you want your system to adhere to, and assuming you are consistent, your results will remain in the system you have chosen. I did not author oedometer.py, but most of these examples are just demonstrations of functionality, I wouldn't take the numbers to mean anything special if I were you (but maybe they do, without comments I guess you need to really inspect it to find out what unit system it is in). Same goes for default values in general, these are values that worked for someone's simulation but you will need to change them to obtain accurate behavior in your specific model. >And how can I find the FlowEngine source codes. YADE source code is hosted on Github. The FlowEngine itself is contained in [2], but it relies on [3] and [4] for permeability calculations and the solver. [1]Chareyre, B., Cortis, A., Catalano, E., & Barthélemy, E. (2012). Pore-Scale Modeling of Viscous Flow and Induced Forces in Dense Sphere Packings. Transport in Porous Media, 94(2), 595–615. http://doi.org/10.1007/s11242-012-0057-2 [2]https://github.com/yade/trunk/blob/master/pkg/pfv/FlowEngine.ipp.in [3]https://github.com/yade/trunk/blob/master/lib/triangulation/FlowBoundingSphere.ipp [4]https://github.com/yade/trunk/blob/master/lib/triangulation/FlowBoundingSphereLinSolv.ipp -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp