# CSV file

Batches in Ashes can be either created from the Batch window or imported from csv files in the Batch manager. The recommended way to create a CSV file for a batch is
• generate a similar batch in Ashes in the Batch window
• export the batch to CSV from the Batch window
• modify the exported CSV file
The figure below is an example of a CSV file exported from Ashes

The columns of the file have the following purposes
• Load case set: defines the name of each of the load case sets in the batch
• Load case: defines the name of each of the load cases in the batch
• Enabled: either 1 or 0. If a value of 0 is set, the load case or load case set will not be run.

Note: if the Enabled value of a Load case set is 0. all the Load.cases in this Load case set will not be run

• Duration: sets the duration of the load case set

Note: the duration of a Load case is defined by the duration of the Load case set it belongs to. It is not possible to set different durations for Load cases within a Load case set.

• Rec. time step: sets the frequency with which the output is written to the text file. A value of 1 means that every time step is recorded, a value of 2 means that every second time step is recorded, etc.
• Sensors: specifies which sensors are present in the model. This defines what data will be recorded during the simulation.
• Jobs: defines the number of simulations that will be run for a given load case. This is typically used when running simulations with turbulent wind. If the Seed of the turbulent wind is set to Random, different realisations of a turbulent wind condition can be run with this parameter.
• Simulation parameters: any parameter from any Parts can be modified in the batch. To know the name of a parameter, the suggested procedure is to add the parameter in the Batch window and to export the CSV file.

## 1 Sensors

It is possible to run different load cases with different sensors by specifying a Sensor list in the Sensor column. A sensor is defined by a string formatted as follows:

SensorType@CustomName@Part@ExtraInfo

The string contains four parameters:
• SensorType is the type of sensor, automatically generated by Ashes
• CustomName is the name of sensor set by the user
• Part is the part that the sensor belongs to
• ExtraInfo enables you to specify certain parameters for the sensor, as is the case for the Fatigue sensor

You can see the string defining any sensor by
- adding a sensor to your model in time simulation
-
going to the Batch manager
- creating a new batch
- exporting the batch (see Batch window)
If you open the csv file, you will then find the string under the Sensor column, as illustrated in the image below:

Note: not all parameters of the sensor string are always necessary. In the example above, there is no custom name or extra information

### 1.1 Examples

The default Generator sensor, available when you open any default template, will be defined by the string GeneratorElectrical@@Generator: Variable speed@. The sensor type, as defined by Ashes, is GeneratorElectrical, and the sensor belongs to the part Generator: Variable speed

It is possible to get this information by hovering the sensor in Time simulation, as illustrated in the image below

In this example, the sensor type is Rotor, and this sensor belongs to the part Rotor. The sensor string will therefore be Rotor@@Rotor@. The rotor part also has a sensor called RotorAero (see Rotor [Aero] sensor). The string for this sensor is thus RotorAero@@Rotor@

In the examples above, no custom name was set. If you rename the rotor sensor to MySensor, the string will now be Rotor@MySensor@Rotor@, as illustrated in the image belowe:

When hovering the sensor name, you will now see the following information:

Note that even though most sensors belong to a part, that is not the case for all sensors. Special sensors (see Adding a sensor) have no owning part. For example, for a Solver sensor without a custom name, the sensor string will be Solver@@@.

Some sensors accept extra information to specify necessary or optional parameters. This is the case of the Fatigue sensor. The string for a fatigue sensor placed on the lowest element of the monopile of the default onshore model will be Fatigue@@Element 1 | Tubular tower@i|0|EurocodeEN1993|0$SN100$1#90$SN100$1#180$SN100$1#270$SN100$1. The last parameter of the sensor string (after the last @ symbol) corresponds to extra information that defines some fatigue calculations parameter.

Different sensors must be separated by the & symbol, for example Rotor@@Rotor@&Generator@@Generator: Variable speed@&Solver@@@.

Note: if your model has input text files (such as Support section files) and you have defined sensors in the text files, you do not need to add them again to the CSV file, Those sensors will be added to the batch model automatically.

If the Sensors column of the CSV file is left empty, a set of default sensors will be added to the model. If you don't want the default sensors to be added, you can write No defaults in the sensors column, as illustrated in the image below: