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Hello,
I just wanted to know what are function of 1)Initial pressure 2)initial velocity in Basic parameter in simulation section.We already feed volumetric flow rate in boundary condition.
SECOND QUESTION
In case of cylinder example tutorial problem ,when we export our simulation results in paraview, since in paraview have no naming data about inlet and outlet therefore some time problem occur which one is input/output . so what could be done to resolve this issue?

Hello,

Initial pressure and initial velocity are use to specify simulation initial conditions (See https://simvascular.github.io/documenta ... olver.html).

I don't know what you mean by some time problem occur which one is input/output , please clarify.

Cheers,
Dave

when we export the simulation result in paraview,the naming which we give in simvascular(inlet_cap and outlet_cap) is not exported ,so it is difficult to know which one is inlet and which one is outlet.
SECOND QUESTION
what is output dimension of simulation result when previewed in paraview in legend (will it in SI or CGS) because There is no concept of units in VTK/ParaView. the data are displayed in the unit that the data is

when we export the simulation result in paraview,the naming which we give in simvascular(inlet_cap and outlet_cap) is not exported ,so it is difficult to know which one is inlet and which one is outlet.

You can read in the simulation mesh-complete/mesh-surfaces VTP files to display the inflow/outflow surfaces, this is usually obvious when simulating a vasculature (e.g. you should know which is the left iliac outflow surface cap).

SECOND QUESTION
what is output dimension of simulation result when previewed in paraview in legend (will it in SI or CGS) because There is no concept of units in VTK/ParaView. the data are displayed in the unit that the data is

It seems that you answered your own question! Simulations don't have implicit units so the units displayed in Paraview are whatever units are implied by the data used in the simulation.

Cheers,
Dave