Open loop coronary block missing terms

[menon-karthik]

Description

While trying to add some test cases that compare simulation results with analytical solutions (#99), @AndreaZanoni figured out that the open loop coronary blocks might be missing some terms relating to the initial condition.

Reproduction

We will add in more details to reproduce the error shortly. Requires a little bit of investigation.

Expected behavior

We are expecting a simulation using the closed loop coronary to match an analytical solution throughout the simulation. Currently it only matches later in the simulation, not close to the initial condition.

Additional context

No response

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