screen equations

[Mathadon]

Direct solar irradiation is converted into diffuse solar irradiation? Does this make sense? Probably not since screens are typically perforated and therefore the light stays direct (except for diffraction).

  HShaDirTil = HDirTil*(1 - limiter.y);
  HShaSkyDifTil = HSkyDifTil*(1 - limiter.y) + HSkyDifTil*limiter.y*shaCorr + HDirTil*limiter.y*shaCorr;

[jelgerjansen]

@Mathadon you fixed this when working on the interzonal airflow (PR #1379). The equations now read as follows:

  HShaDirTil = HDirTil*((1 - Ctrl_internal) + Ctrl_internal*shaCorr);
  HShaSkyDifTil = HSkyDifTil*((1 - Ctrl_internal) + Ctrl_internal*shaCorr);
  HShaGroDifTil = HGroDifTil*((1 - Ctrl_internal) + Ctrl_internal*shaCorr);

Therefore I'll close this issue.