SATE’s ACUSYS® programme allows the company to provide consultancy to solve flow-induced vibration (FIV) problems deriving from internal fluid-dynamic/acoustic interactions caused by varieties of sources (Figure 1) that are inevitably present in plants.
Their influence depends on operating conditions and plant piping design choices that could be correctly addressed upon a timely pre-analysis.
Typical useful indications that we can provide before the project remedies become too costly are position of valves, length and diameter of side branches, T-joints shaping to limit vortexes onset range.
The figures illustrate synthetically the interacting phenomena and schematics of CFD analyses that we performed to define and validate our procedure to solve cases of predominant acoustics influence without the need for lengthy and costly CFD studies.
By our methods and tools we can also study "riser singing" problems, i.e. acoustic pulsations caused by low frequency vortexes generated by flexible ducts, with corrugated internal walls.
