I think you can use RCR for all outlets and determine the total resistance (Rp+Rd) using Murray's law like rules.

If the nonlinear residual values in histor.dat blew up, I would check if the inlet and outlets are correctly labeled and assigned BCs in the svpre file and solver.inp You can also use your simulation results to check if 1. inflow is correctedly prescribed. 2. no slip condition is correctly imposed (...

I think you may use RCR for the side branches as you did for the main branches. Do you know how much flow streaming to those side branches relative to the main branches. If so, you can adjust resistance values to achieve target flow splits. Otherwise, one often assumes that the flow to each outlet i...

The txt file you attached shows that wall shear stress post processing for restart.893.23 caused the error. Occasionally, it happens at a time step and I usually rerun that time step to get uncorrupted restart files. I don't know the exact cause. It might be associated to mesh or domain decompositio...

For a network geometry, you need to set JOINT (node), JOINTINLET (parent segments for each node) and JOINTOUTLET (child segments for each node) in the input file in addition to segment length and size. In a tree like model, the number of segments in JOINTINLET is 1. For a network, you may set the nu...

Do you have any segmentation that intersects with other segmentations? If your model consists of multiple groups, you can try to make a model by using fewer countour groups until you identify the group that causes the problem.

You can try to use VolView https://www.kitware.com/volview/ to load a DICOM stack and save it as a vti file. Then load the vti file into SimVascular instead.

For small deformations, you'd better perform simulations with deformable walls using CMM-FSI. The CT images that record vessel motions can be used to estimate/calibrate your boundary conditions and wall properties. A complex and computationally expensive way is to directly impose the wall displaceme...

Try the GenBC.f and USER.f attached and see if they work. Basically, GenBC asks users to provide a subroutine to calculate f=dX/dt, where X are ODE unknowns for the lumped parameter model. To impose a known pressure wave, I can set f=0 and update genBC unknown X directly, which is the pressure in th...

I notice a couple of missing commands in the svpre file. After you set deformable_wall_vtp mesh-complete/walls_combined.vtp I think you need to add: fix_free_edge_nodes_vtp mesh-complete/walls_combined.vtp This command tells the solver to clamp all nodes on the rings of the inlets and outlets. You a...