Initial Boundary Conditions and ElecNode Configuration


I’m currently working on a spacecraft simulation and could use some guidance regarding setting up the initial boundary conditions (potential). I’ve encountered a discrepancy between the specified potential conditions and the simulation results, especially in the early time steps when reviewing the time series data.

Here are my primary concerns:

  1. Face Group Potential (SCDiriPotSurf[V]): I’ve adjusted the default potential for the face group to reflect the desired initial condition on the spacecraft’s surface. However, it appears that the potential doesn’t align with the expected initial state during the early simulation steps. Should I also consider modifying the node potential (SCDiriPos[V]) to address this issue?
  2. ElecNode Configuration: In my simulation, I’m working with two spacecraft, each with its own set of face groups. Additionally, there are face groups for the external boundary and the computational volume. To accurately simulate the interactions between these entities, I’d like to clarify the recommended ElecNode configuration. How should ElecNodes be defined for the two spacecraft, external boundary, and computational volume?

Your insights and expertise on this matter would be greatly appreciated. If you have experience with spacecraft simulations or similar scenarios, I would be grateful for any guidance or best practices you can offer.

Thank you for your assistance!