Load case

A Load case  is a combination of parameters that define an Ashes model (they can be parameters defining the Environment  or the  Wind turbine ). Any parameter that can be modified in the  Simulation window  can also be modified in a load case.

It is typical to define a load case as corresponding to an  Environmental condition. F or example, a load case could correpond to a situation where the wind is turbulent with a mean wind speed of 12 m/s and the waves are irregular with a peak period of 10 s and a significant height of 6 m.

Load cases are only relevant in the  Batch manager . 

The image below gives an example of Load cases  used in a batch. In this case, there are two Load case sets  (see Load case set ).

• The first load case set, called 'Operational conditions', is composed of six load cases. The first of these load cases is called '4 ms' and corresponds to a situation where the wind is turbulent and has a mean wind speed of 4 m/s and the main shaft is freely rotating (i.e. the parameter Bearings locked  is set to false). The other load cases of the first load case set are similar but have different average wind speeds.
• The second load case set, called 'Parked conditions' is composed of two load cases. The first load case is called '50y', and corresponds to a situation where the Extreme Wind Model from the  IEC extreme events  is used with a return period of 50 years. The second load case has the same wind condition with a return period of 1 year. Both these load cases have the bearings of the main shaft locked.