Specific version of the Flow Field (see Flow plugin) to handle simulation data from a stellar merger.
The following input ports are available:
| Input | Description | Type | Remark |
|---|---|---|---|
| Octree | Points (representing cells) of the octree, especially containing IDs to identify their position in the tree. | Point Set | |
| Seed | Input seed for stream-, streak- and path lines. | Poly Data | |
| Stars | Identified star positions and respective properties. | Point Set |
The input points representing the octree contain the following data fields:
| Data field | Description | Data | Type | Remark |
|---|---|---|---|---|
| Point ID | IDs indicating the cell within the octree. | Scalar | Point-based | |
| Velocity | Velocity. | Vector | Point-based | |
| Minimum X | Left domain boundary. | Scalar | Point-based | |
| Maximum X | Right domain boundary. | Scalar | Point-based | |
| Minimum Y | Lower domain boundary. | Scalar | Point-based | |
| Maximum Y | Upper domain boundary. | Scalar | Point-based | |
| Minimum Z | Back domain boundary. | Scalar | Point-based | |
| Maximum Z | Front domain boundary. | Scalar | Point-based | |
| Time | Time step of the data. | Scalar | Point-based | |
| Angular frequency | Angular frequency representing the grid rotation. | Scalar | Point-based | |
| Star Classification | Classification of each cell, indicating its corresponding star. | Scalar | Point-based | Optional |
| Arrays | Interpolate at particle positions and store values along stream- or pathlines. | Point-based | Optional |
The input points representing the centers of the stars contain the following data fields:
| Data field | Description | Data | Type | Remark |
|---|---|---|---|---|
| Star Velocity | Velocity of the stars at the respective center of mass. | Vector | Point-based | |
| Star Rotation | Rotation of the stars around their center of mass, given as angular velocity. | Vector | Point-based |
The following parameters can be set by the user:
| Parameter | Description | Type | Accepted values | Default value |
|---|---|---|---|---|
| Method | Type of integral lines to generate. | Enum | Streamlines, Streaklines, Pathlines | Streamlines |
| Direction | Forward or reverse time integration. | Enum | Forward, Reverse | Forward |
| Number of lines | Number of advection steps. | Integer | >0 | 20 |
| Force fixed time step | Force a fixed time step for streak- and path line computation. | Boolean | True, False | False |
| Fixed time step | Time step size if fixed and for streamline computation. | Float | >0 | 1.0 |
| Locality method | Definition of locality, i.e., how to define the rotation of the stars. | Enum | None, Rotation around origin, Star velocity, Star rotation, Rigid body | Rotation around origin |
| Force fixed frequency | Override the frequency given in the dataset. | Boolean | True, False | False |
| Rotational frequency (omega) | Angular frequency in case of override. | Float | >0 | 1.0 |
The result of the computation are either stream-, streak or pathlines with the following data fields:
| Data field | Description | Data | Type | Remark |
|---|---|---|---|---|
| ID (advection) | Time information, storing the advection step. | Scalar | Point-based | |
| ID (distribution) | Time information, storing the advection step normalized for each integral line. | Scalar | Point-based | |
| ID (advection) | Time information, storing the advection step. | Scalar | Cell-based | |
| ID (distribution) | Time information, storing the advection step normalized for each integral line. | Scalar | Cell-based |