Hydrodynamics & HydroAcoustics simulation for AIV (Acoustic Induced Vibration)
FEA & CFD Based Simulation Design Analysis Virtual prototyping MultiObjective Optimization
AIV (Acoustic Induced Vibration) refers to structural vibration excited by intense pressure fluctuations in a compressible flow stream. Process plants have a number of requirements for abrupt pressure reductions, which invariably generate some amount of acoustic vibration. This is normally accomplished through the use of the following:
- Blow down valves and restriction orifices
- Relief valves
- Pressure reducing valves
- Compressor recycle valves
The pressure reduction process induces turbulent pressure fluctuations in the flowing medium, which in turn excites the downstream pipe wall, causing stresses and potentially fatigue failure. The intensity of vibration tends to increase with mass flow rate, velocity, and pressure loss. AIV failures are known to occur preferentially at non-axisymmetric discontinuities in the downstream piping, such as at small-bore branches and their welded supports.
Enteknograte’s engineering team use combination of advanced CFD and FEA tools to predict AIV failures and provide remedial actions. This methodology starts with the identification of processes requiring analysis and concludes with recommendations to reduce dynamic stress levels where the potential for fatigue failures puts your facility at risk.
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Enteknograte offers a Virtual Engineering approach with FEA tools such as MSC Softwrae(Simufact, Digimat, Nastran, MSC APEX, Actran Acoustic solver), ABAQUS, Ansys, and LS-Dyna, and CFD codes such as MSC Cradle, Ansys Fluent, Siemens StarCCM+ , special purpose software such as Maxsurf and “AVEVA Marine” in Boat, Yacht, Marine and Shipbuilding Industry, encompassing the accurate prediction of in-service loads, the performance evaluation, and the integrity assessment including the influence of manufacturing the components.