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.
Marine Propulsion System Design: Combination of CFD & FEA for Detailed Fatigue, Strength and Vibration Analysis
Marine propulsion system designers rely on the combination of CFD and FEA software for fatigue, strength and vibration analysis. Proper propulsion system/components analyses during the design phase help avoid delays in delivery and damage problems in operation, thereby reducing expensive off-hire. Professional and reliable software and experts is essential for the design of a robust system.
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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.
NVH based Design and Considerations for Marine and Shipbuilding Industry including Ship, Boat, Yacht, Vessels and offshore structures
The challenge for the NVH specialists is to support the concept and design development process by reliable recommendations just-in-time prior concept or design freeze. Enteknograte’s specialists particularly use advanced methodologies for NVH simulation and optimization for Marine and Shipbuilding Industry:
- FEA based Ship, Boat, Yacht, Vessels Powertrain
- Structural Optimization
- Optimization of Ship, Boat, Yacht, Vessels Engine Dynamics based on MBD ( Multi-Body Dynamics Simulation)
- Concurrent optimization of combustion efficiency with NVH considerations for Vessels
- Ship, Boat, Yacht, Vessels and offshore structures Interior Noise Simulation based on measurement and CAE
- Ship, Boat, Yacht, Vessels and offshore structures Exterior Noise Simulation with couple use of CFD and FEA solvers
- Objective Analysis of Sound Quality