Simcenter STAR-CCM+ 2406
User Guide
Simcenter STAR-CCM+ allows you to post-process the solution after each iteration or time-step, (while the simulation is running), as well as when the simulation completes. For this reason, you generally create post-processing objects before running the simulation. Post-processing objects are also known as analysis objects.
Monitors sample, save, and plot solution data.
This section explains:
The key steps in successfully analyzing simulation results are to: (1) be clear on what quantities you want to extract; (2) locate or define surfaces on which to obtain the data; and, (3) present the data in visual scenes or numeric output.
Most visualization objects such as plots, reports, and scalar displayers allow for smooth and non-smooth values. For example, the contour style for scalar displayers provides a Smooth Filled option (smooth) and a Filled option (non-smooth). The way these values are calculated depends on the discretization method.
For finite volume meshes, understanding how Simcenter STAR-CCM+ deals with field function data is important for avoiding non-physical results in post-processing at an interface, and to appreciate the difference that smoothing makes when it is applied.
Although Simcenter STAR-CCM+ can display, analyze, and report simulation data on regions, boundaries, and parts, there are many cases when you want to access data in other entities of the solution space. Derived parts provide a mechanism for defining additional entities on which you can access solution data.
The visualization tools in Simcenter STAR-CCM+ are integrated with the analysis, allowing for the interactive extraction and viewing of solution data from either a running or converged simulation.
For transient solutions, Simcenter STAR-CCM+ provides the simulation history file (.simh) to which you can save selected data while a simulation is running. After the simulation completes, you can load this file and query its states for post-processing.
This workflow incorporates the roles of both reports and monitors.
A field history is a type of field monitor that stores a finite number of past values (or samples) of a field function, captured at moments defined by its update policy, for a given set of input regions or boundaries (or both).
Reports provide summaries of solution data.
Monitors enable summary information from the simulation to be sampled and saved during the solution.
The way in which monitors sample data and send data to an XY plot can be customized to suit the particular quantity being monitored.
Report-based monitors are useful for monitoring quantities of engineering interest during a simulation. They provide a dynamic record of these quantities during solution iteration.
For a report-based monitor, you can instruct the monitor to capture results for some or all of the parts addressed by the underlying report.
There are seven varieties of field function monitor. During a simulation run, they collect data samples for a selected part at a frequency that you specify.
A field history is a type of field monitor that lets you access field data from previous time-steps or iterations.
These properties allow you to control how the monitor data appears in the output.
These are the pop-up menu items available when you right-click the Monitors manager node.
The plotting features in Simcenter STAR-CCM+ allow you to create three kinds of two-dimensional plots.
This interactive tool lets you extract knowledge of merit -- information that facilitates a correct engineering decision -- from a large volume of data.
In studies of cases of revolving volumes, such as turbomachinery, a typical requirement for post-processing is to render and plot data on surfaces or profiles that are positioned parametrically in relation to the domain bounding surfaces. For example, you may wish to view the total pressure on a surface located exactly half-way between the hub and shroud, or you may wish to plot pressure across both blade surfaces on a given slice.
Several features of Simcenter STAR-CCM+ require that you define a trigger for when an action takes place. Simcenter STAR-CCM+ provides three built-in trigger types, and one custom trigger type (defined by an update event).
Signal processing applies data set functions to sets of wave data.
