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Post-Processing
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.
Monitoring the Solution
Monitors sample, save, and plot solution data.
Field Function Monitors
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.
Field Function Monitor Reference

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Post-Processing
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.
- Analysis Workflow
  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.
- Data Interpolation
  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.
- Field Function Interpolation and Interfaces (FV)
  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.
- Accessing Solution Data through Derived Parts
  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.
- Visualizing the Solution
  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.
- Transient Solution Data
  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.
- Sampling Data Values Using Reports and Monitors
  This workflow incorporates the roles of both reports and monitors.
- Accessing Field Data from Previous Time-Steps or Iterations
  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).
- Reporting Results
  Reports provide summaries of solution data.
- Monitoring the Solution
  Monitors sample, save, and plot solution data.
  - What Is a Monitor?
    Monitors enable summary information from the simulation to be sampled and saved during the solution.
  - Customizing Monitors
    The way in which monitors sample data and send data to an XY plot can be customized to suit the particular quantity being monitored.
  - Using Report-Based Monitors
    This section explains:
  - Field Function Monitors
    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.
    - Field Function Monitor Reference
    - Using a Sliding Sample Window
      The sliding sample window is the N most recent samples of data, (based on iteration or time-step depending on setup), during the simulation.
    - Specifying When Data Collection Stops
      You can set a time or iteration at which the monitor stops collecting data. This can let you get results for specific intervals within the simulation run.
  - Field Histories
    A field history is a type of field monitor that lets you access field data from previous time-steps or iterations.
  - Properties of the Monitors Manager
    These properties allow you to control how the monitor data appears in the output.
  - Pop-Up Menu of the Monitors Manager
    These are the pop-up menu items available when you right-click the Monitors manager node.
- Plots
  The plotting features in Simcenter STAR-CCM+ allow you to create three kinds of two-dimensional plots.
- Exploring Solutions with Data Focus
  This interactive tool lets you extract knowledge of merit -- information that facilitates a correct engineering decision -- from a large volume of data.
- Parametric Positioning for Analysis Surfaces in Turbomachine Domains
  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.
- Triggers and Update Events
  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
  Signal processing applies data set functions to sets of wave data.

Field Function Monitor Reference

Field Function Monitor Properties


Publish Mean	For the Field Variance and Field Co-Variance monitors, determines whether Simcenter STAR-CCM+ will generate a separate field function of the mean of the function being sampled. Two separate properties exist for the Field Co-Variance monitor’s field function selections: Publish Mean 1 and Publish Mean 2.
	Activated	Enables this feature.
	Deactivated	Leaves this feature disabled.
Field Function	One or more field functions which the monitor is to sample in order to perform its calculations. Two separate properties exist for the Field Co-Variance monitor’s field function selections: FieldFunction 1 and FieldFunction 2.
Trigger	Provides choices for triggering the action:
	Iteration	Calculates based on the specified number of iterations in the Frequency property. If you wish to average results per iteration, it is recommended that you first read the section on choosing between steady and unsteady models.
	Time-Step	Calculates based on the specified number of time-steps in the Frequency property (default).
	Inactive	No sample is taken.
Parts	The model parts over which the field function monitor collects samples. Opens the in-place part selector for editing.
Sample Count	The number of data samples collected for each cell within the monitor (read-only).
Enable sliding sample window	Calculates a set of the most recent samples, with the number of samples in that set specified by the user. Activates the Sliding Sample Window Size node.
	Activated	Enables this feature.
	Deactivated	Leaves this feature disabled.
Title	The name of the field function which contains the values computed by the field function monitor (read-only).
Collection Start	The solution step at which to begin collecting data. Samples will be collected at time-steps or iterations after this start time, based on the Frequency property.
Enable collection stop	Specifies the final sample time or iteration after which to stop collecting data. Activates the Stop Specification node.
	Activated	Enables this feature.
	Deactivated	Leaves this feature disabled.
Frequency	Determines how often the sample will be taken, based on the setting in Trigger. Samples are taken when the number of samples is evenly divisible by the frequency.

Field Function Monitor Pop-Up Menu


Reset Monitor Data	Clears all samples and accumulated data from the field function monitor.