- Only used if no wells present. - Defaults to 0.0 if gravity is present. - Otherwise defaults to 0.1. These defaults are intended to preserve behaviour from before the initialisation code changed away from using the 'scenario' parameter.
- Only used if no wells present. - Defaults to 0.0 if gravity is present. - Otherwise defaults to 0.1. These defaults are intended to preserve behaviour from before the initialisation code changed away from using the 'scenario' parameter.