Peters model definition

@PETERS_MODEL_DEFINITION {
@PETERS_MODEL_NAME {PetModlName} {
@QUASI_STEADY {YES/NO}
@PROFILE_DRAG_AIRLOADS {YES/NO}
@REVERSE_FLOW_MODEL {RfModl}
@ONERA_DYNAMIC_STALL {YES/NO}
@COMMENTS {CommentText}
}
}

Introduction

When using an internal aerodynamic model, an unsteady aerodynamics model must be defined, such as the Peters model.

Notes

The following data can be specified when using the Peters unsteady aerodynamics model.

  1. If flag @QUASI_STEADY = YES, the quasi-steady version of Peters model is used, i.e., unsteady aerodynamic terms are ignored. (Default value: @QUASI_STEADY = NO).
  2. If flag @PROFILE_DRAG_AIRLOADS = YES, corrections to account for profile drag loads will be added to the airloads. (Default value: @PROFILE_DRAG_AIRLOADS = YES).
  3. Parameter RfModl selects the reverse flow model; three choices are possible: RfModl = NONE, HARD, or SOFT. These three choices are explained in section 3.3.1, Kutta condition and reverse flow parameter.
  4. If flag @ONERA_DYNAMIC_STALL = YES, the ONERA dynamic stall model will be used. For this option to take effect, several conditions must be met: 1) an ONERA dynamic stall model must be defined, 2) this model must be associated with an airtable, and 3) this airtable must appear in the lifting line properties associated with the lifting line pertinent to this aerodynamic loads interface. (Default value: @ONERA_DYNAMIC_STALL = NO).
  5. It is possible to attach comments to the definition of the object; these comments have no effect on its definition.