BOSpulse 6.0 adds a new Flow-Induced Pulsation analysis type that yields the harmonic pressure pulsations and shaking forces caused by the periodic shedding of vortices at tee and cross junctions. This analysis type is based on a single-mode model that starts with the calculation of the natural acoustic modes and frequencies for the piping system under consideration. Then, for each acoustic mode, the model simulates the shedding of vortices by applying an acoustic, oscillating pressure source at each tee and cross junction in the piping system. The power associated with the pressure sources is determined from the mean flow field and the acoustic flow field at each junction. The resulting pressure pulsations in the system are then determined by solving the flow equations in the frequency domain by means of a harmonic analysis.
The main advantage of the single-mode model is that it is not limited to specific piping geometries; it can be applied to any piping system involving tee and cross junctions. A drawback is that the single-mode model may, in some cases, be less accurate than semi-empirical models that have been tuned for specific piping geometries. Nevertheless, the results obtained with the single-mode model generally agree well with experimental and numerical data that are available in the literature.
The Flow-Induced Pulsation analysis type provides support for specifying allowable limits for the pressure pulsations and shaking forces. In this way you can efficiently determine whether flow-induced pulsations are problematic. If so, you can use BOSpulse to evaluate mitigating measures before implementing them in the field.
Check out the rest of the release highlights:
- Unified application data model
- Updated allowable limits
- Improvement of the reciprocating compressor model
- Improved and more efficient user interface
- Other improvements
For more information:
- Learn more about BOSpulse
- Schedule a demo to see BOSpulse in action