Re: [EnergyPlus_Support] Some Tutorials And websites for energy plus

[Richard Raustad <RRaustad@xxxxxxxxxxxx>]

** Severe ** GetAirflowNetworkInput: AirflowNetwork:SimulationControl object, Wind Pressure Coefficient Type = INPUT.
** ~~~ ** ..AirflowNetwork Wind Pressure Coefficient Array Name was not entered.

In your file, you have left blank the field for the wind pressure coefficient array name when you said the wind pressure coefficient type was INPUT.

AirflowNetwork:SimulationControl,
VentNatural, !- Name
MultizoneWithoutDistribution, !- AirflowNetwork Control
Input, !- Wind Pressure Coefficient Type
, !- AirflowNetwork Wind Pressure Coefficient Array Name

Look at the example file AirflowNetwork3zVent.idf. That file has the same input as yours and DID specify the coefficient array name. You will also need one AirflowNetwork:MultiZone:WindPressureCoefficientValues object for each face of the building (I only show 1, see the same example file)

AirflowNetwork:SimulationControl,
NaturalVentilation, !- Name
MultizoneWithoutDistribution, !- AirflowNetwork Control
INPUT, !- Wind Pressure Coefficient Type
Every 30 Degrees, !- AirflowNetwork Wind Pressure Coefficient Array Name

AirflowNetwork:MultiZone:WindPressureCoefficientArray,
Every 30 Degrees, !- Name
0, !- Wind Direction 1 {deg}
30, !- Wind Direction 2 {deg}
60, !- Wind Direction 3 {deg}
90, !- Wind Direction 4 {deg}
120, !- Wind Direction 5 {deg}
150, !- Wind Direction 6 {deg}
180, !- Wind Direction 7 {deg}
210, !- Wind Direction 8 {deg}
240, !- Wind Direction 9 {deg}
270, !- Wind Direction 10 {deg}
300, !- Wind Direction 11 {deg}
330; !- Wind Direction 12 {deg}

AirflowNetwork:MultiZone:WindPressureCoefficientValues,
NFacade_WPCValue, !- Name
Every 30 Degrees, !- AirflowNetwork:MultiZone:WindPressureCoefficientArray Name
0.60, !- Wind Pressure Coefficient Value 1 {dimensionless}
0.48, !- Wind Pressure Coefficient Value 2 {dimensionless}
0.04, !- Wind Pressure Coefficient Value 3 {dimensionless}
-0.56, !- Wind Pressure Coefficient Value 4 {dimensionless}
-0.56, !- Wind Pressure Coefficient Value 5 {dimensionless}
-0.42, !- Wind Pressure Coefficient Value 6 {dimensionless}
-0.37, !- Wind Pressure Coefficient Value 7 {dimensionless}
-0.42, !- Wind Pressure Coefficient Value 8 {dimensionless}
-0.56, !- Wind Pressure Coefficient Value 9 {dimensionless}
-0.56, !- Wind Pressure Coefficient Value 10 {dimensionless}
0.04, !- Wind Pressure Coefficient Value 11 {dimensionless}
0.48; !- Wind Pressure Coefficient Value 12 {dimensionless}

If you have a rectangular building, you could change that input to SurfaceAverageCalculation and you would not need these additional input objects.

AirflowNetwork:SimulationControl,
VentNatural, !- Name
MultizoneWithoutDistribution, !- AirflowNetwork Control
SurfaceAverageCalculation, !- Wind Pressure Coefficient Type