Explore how Ansys EnSight transforms the analysis of rotating components by plotting variables in real-time, enhancing both accuracy and understanding in dynamic simulations.
Introduction:
Ansys EnSight is a powerful tool for advanced visualization in engineering simulations. It allows engineers to analyze complex data and gain insights into their designs.
With Ansys EnSight, users can visualize and interpret simulation results in a more intuitive way. It provides a comprehensive set of tools for post-processing and analyzing simulation data, making it easier to understand the behavior of rotating components.
By visualizing variables along a rotating component, engineers can gain a better understanding of the performance and behavior of the system. This can help in optimizing designs and identifying potential issues.
Problem:
Assume a rotating cylinder in a domain in which a fluid flow was described, and the user wants to plot a variable along a that cylinder. This example uses the transient CFX simulation. The user reads the transient data in EnSight. A generated line along the rotating body and variation of pressure on this line was plotted (Figure A: Start Point). When the cylinder rotates, the pressure curve is not available (Instances A and B) until the cylinder reaches to the start point again (Instance C). This does not allow the user to continuously monitor the variable throughout the operation.
Figure 1. Demonstrating the problem of intermittently showing the variable plot throughout the rotational operation
Step-by-Step Solution:
Here is a step-by-step guide to solve this problem (Figure 2):
1. Import your simulation data into Ansys EnSight with "No" to Transient Geometry". This can be done by loading the results file generated by the simulation software.
2. Once the data is imported, select the rotating component and create a line clip along it that you want to analyze. Create a plot with "Querry Line Part" function using a preferred variable.
3. Import a second set of the simulation data as "Case 2" with "Yes: Coordinates Only" to Transient Geometry.
4. The imported data is shown as "Case 2". 
Figure 2. Step-by-step guide to create a plot with transient data
Only show the faces of the "Case 2" on the screen, and run the transient data. The plot will always be visible while the cylinder rotates (Figure 3).
Figure 3. The plot a variable along a line if a rotating cylinder
Conclusion:
To plot a variable along a rotating component from the transient simulation, the case file should be read in twice without and with transient geometry. The plot has to be generated on the case without the transient geometry. The rotation can be viewed the second case which has the transient geometry.
The below video provides the details of the procedure.