Technically, you can prescribe a pressure waveform for an inlet using a GenBC boundary condition. The GenBC tutorial shows how to prescribe an RCR BC for an outlet by providing dp/dt=f(Q,R,C,Rd) at each time step. Similarly, you can prescribe a pre-defined pressure waveform by providing dp/dt at any...

Generally, there are two things you can try. 1. You can consider reducing your mesh size for the coronary artery to improve mass conservation. 2. If I remember correctly, the solver adds the squares of continuity and momentum residuals for each node and then calculates the root of mean squared resid...

You can run presolver, flowsolver and postsolver from the command line. For the presolver, you need to have a .svpre file, say cylinder.svpre and type % svpre cylinder.svpre or % your-simvascular-dir/Bin/svpre cylinder.svpre The presolver generates geombc.dat.1 and restart.0.1 files for simulations....

You can try to modify bct.dat to set up velocity components for each inlet node. The first line in bct.dat tells you how many nodes on inlet faces. Starting from the second line, for each node i, nodal coordinates, velocity components and time are listed as follows, x_i, y_i, z_i, n u1_i, v1_i, w1_i...

1) How can i obtain a plot of flow (ml/s --> t) at the inlet face? With other software i suppose, software with which i can get quantitative data about 4D Flow in MRI sequence (like, for example, magnitudo of velocity). Can you cite some software that does this? I know there is a software segment th...

You can change the following parameters in solver.inp to see if there is any improvement. 1. reduce your time step dt, say 0.005 2. decrease residual criteria, say 0.001 3. increase nonlinear iterations, add "Step Construction 0 1 0 1 0 1 0 1 0 1 0 1 0 1" to solver.inp I am not sure how many iterati...

It seems the 4th-7th segmentations are not well created causing segmentation intersection In the rc1. If you delete the 5th and 6th segmentations in the rc1, you should be able to create a model. Or recreate them without intersection. Generally, a rapid change in segmentation orientation should be a...

I am afraid that you cannot do that from the GUI. Technically it is possible to do that by adding a subroutine to read displacements.

Unfortunately, there is no GPU acceleration available for simulations unless the solver is modified.

The resistance boundary condition models the downstream vasculature (beyond the 3D model) as a resistor. Using a circuit analogy and Ohm's law, the pressure drop across a resistor (downstream vasculature) is equal to flow times resistance (Q*R). If a ground pressure of 0 mmHg is used, at the outlet ...