On Mon, Jul 18, 2016 at 12:44 PM, Ryan Woodall <[email protected]> wrote:
> I'm trying to figure out how to load in a csv file to implement some time > dependent BCs. We are trying to model contrast agent concentration within > tissue, and the mesaurements we have are concentration over time in the > blood vessels. Lets call this variable Cp. Contrast agent cannot cross into > cells, and therefore the flux at those boundaries is 0. Contrast can come > through vessels, through an empirically derived formula shown below. For > the boundary, I have written these two conditions: > > [BCs] > [./cell] > type = NeumannBC > variable = diffused > value = 0 > [../] > [./vessel] > type = NeumannBC > variable = diffused > value = _normals*P*(Cp_t-_u_t) > [../] > [] > > Where, P is a constant and Cp is read in through the Functions block. Could > someone help me out and show me what I'd need to do to read in the Cp.csv > in the Functions block? It only has two columns: time and conc. Ideally, > I'd like to be able to interpolate between the values in this file, since > I'll be running the FEM model at a smaller resolution than the data was > taken. Also, could someone help me choose the correct BC type for the > vessel BC? I'm pretty certain this format is not correct since it changes > with time. Does it need to be FunctionNeumannBC, and have everything > defined in the Functions block, instead of the BCs block? > This question belongs on the moose users list ([email protected]), I've forwarded it there. -- John ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports.http://sdm.link/zohodev2dev _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
