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.
Structural Dynamics Integrity & Vibro-Acoustics Simulation for Marine & Shipbuilding Industry
CFD, Finite Element Method (FEM), Statistical energy analysis (SEA) & Boundary element method (BEM)
Structural-borne noise and vibration need to be minimized for passenger comfort and reduced environmental impact. Our full suite of vibro-acoustics simulation, and optimization tools ensures that we can minimize the structural dynamic impact of your vessel and its components early in the design phase. From large cruise ships to yachts, from frigates to submarines, many design challenges shall be addressed in the design phases of marine applications. If on the one hand the exterior noise, due to propellers, hull radiation or muffler, has to be limited for discretion or environmental reasons; on the other hand, interior noise is of concern for crew and passengers' comfort.
Read more... Ship Stability & Safety Analysis Including Hydrodynamics & Aerodynamics Effects
Operability limits can also be of more functional nature, e.g. holding a vessel steady against an offshore windmill foundation, or launching and recovering a dinghy safely onboard in seaway. Many issues related to dynamic stability of the vessel in waves, e.g. steerability of high speed marine vehicle in waves or the dynamic stability of a vessel against excessive heeling in extreme sea states: ship motions and accelerations Simulation, shipping of green water analysis, slamming impacts simulation, sloshing simulation, steerability in waves analysis, DP -capability simulation.
Read more... Cavitation in Propulsion Systems
CFD Analysis of Propulsion Systems and Cavitation for Marine and Shipbuilding Industry
For water pumps, marine propellers, and other equipment involving hydrofoils, cavitation can cause problems such as vibration, increased hydrodynamic drag, pressure pulsation, noise, and erosion on solid surfaces. Most of these problems are related to the transient behavior of cavitation structures. To better understand these phenomena, unsteady 3D simulations Modeling Cavitation of cavitating flow around single hydrofoils are often performed and the results are compared to experiments.
Read more... Hydrodynamic Performance of Ship Hull: CFD Based Design
A typical project for hydrodynamic hull optimization may include: Establishing a close dialog between Enteknograte and the Client;
Defining a realistic operating profile;
Discussing and combining Enteknograte ’s design ideas with the client’s design philosophy to obtain an optimal hull in both a hydrodynamic and building perspective;
Optimizing the hull forebody based on the operating profile;
Optimizing the hull aftbody to improve the propulsive efficiency, including consideration on propeller and machinery configuration;
Assessing the Energy Efficient Design Index.
Read more... Hydrodynamics CFD simulation, Coupled with FEA for FSI Analysis of Marine and offshore structures
Transient Resistance, Propulsion, Sea-Keeping and Maneuvering Simulation, Cavitation, Vibration and Fatigue
Hydrodynamics is a common application of CFD and a main core of Enteknograte expertise for ship, boat, yacht, marine and offshore structures simulation based design. Coupling Hydrodynamic CFD Simulation in Ansys Fluent, Siemens Star-ccm+ and MSC Cradle with structural finite element solver such as Abaqus and Ansys, enable us to Simulate most complicated industrial problem such as Cavitation, Vibration and Fatigue induced by hydrodynamics fluctuation, Transient Resistance, Propulsion, Sea-Keeping and Maneuvering Simulation, considering two way FSI (Fluid Structure Interaction) coupling technology.
Read more... Floating, Fixed & Gravity-Based Structures Design Including Hydrodynamics & Aerodynamics Effects
Using FEA and CFD software for innovation, flexibility and efficiency in marine and offshore structural engineering for oil & gas production structures, fixed offshore wind turbine support structures, ships and floating offshore structures, our engineers can give you the optimal basis for critical engineering decisions during the entire lifecycle of your asset, be it a topside, jacket, jack-up, mooring system, dynamic stability of floating structures, risers or offshore wind turbine support structure. We Use CFD tools such as MSC Cradle, Ansys Fluent, Siemens Star-ccm+ and FEA Tools such as Abaqus, MSC Nastran and LS-DYNA with combination of very experienced engineers to help our customers.
Read more... Hydroplaning (Aquaplaning) Simulation
It is important to gain insights on the interaction of a tire with a film of water in order to diagnose the onset of hydroplaning and minimize the tire’s propensity to hydroplane. A coupled Eulerian-Lagrangian methodology, using a multi-material Finite Element formulation within advanced FEA software, is used to analyze the interaction of a tire with the water film. The effect of various parameters on the onset of hydroplaning are investigated using the methodology.
Read more... Turbine, Pump & Compressor (Axial or Centrifugal)
Multidisciplinary Turbomachinery Design, Analysis & Optimization
We can design axial turbines, Axial Pump, Centrifugal Compressor, Centrifugal Pump and Mixed Flow Compressor/Turbine with or without any pre-loaded profiles, with prismatic (cylindrical) or twisted blades, multiple extractions/injections, inter-stage heat exchangers, Curtis & Rateau stages, impulse & reaction designs, drilled and reamed nozzles, partial admission, etc. Enteknograte’s engineering team use CFD software’s such as Siemens Star-ccm+, Ansys Fluent and Numeca Fine/Turbo in co-simulation with FEA structural solvers, such as Abaqus, Ansys and MSC Nastran.
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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
Integrated Artificial Intelligence (AI) & Machine Learning - Deep Learning with CFD & FEA Simulation
Machine learning is a method of data analysis that automates analytical model building. It is a branch of Artificial Intelligence based on the idea that systems can learn from data, identify patterns and make decisions with minimal human intervention. With Artificial Intelligence (AI) applications in CAE, that is Mechanical Engineering and FEA and CFD Simulations as design tools, our CAE engineers evaluate the possible changes (and limits) coming from Machine learning, whether Deep Learning (DL), or Support vector machine (SVM) or even Genetic algorithms to specify definitive influence in some optimization problems and the solution of complex systems.
Read more... Electromagnetic Multiphysics
FEA & CFD Based Simulation Including Thermal Stress, Fatigue, and Noise, Vibration & Harshness – NVH for Electric Motors
Enteknograte Finite Element Electromagnetic Field simulation solution which uses the highly accurate finite element solvers and methods such as Ansys Maxwell, Simulia Opera, Simulia CST, JMAG, Cedrat FLUX, Siemens MAGNET and COMSOL to solve static, frequency-domain, and time-varying electromagnetic and electric fields includes a wide range of solution types for a complete design flow for your electromagnetic and electromechanical devices in different industries.
Read more... Acoustics and Vibration
FEA and CFD for AeroAcoustics, VibroAcoustics and NVH Analysis
Noise and vibration analysis is becoming increasingly important in virtually every industry. The need to reduce noise and vibration can arise because of government legislation, new lightweight constructions, use of lower cost materials, fatigue failure or increased competitive pressure. With deep knowledge in FEA, CFD and Acoustic simulation, advanced Acoustic solvers and numerical methods used by Enteknograte engineers to solve acoustics, vibro-acoustics, and aero-acoustics problems in automotive manufacturers and suppliers, aerospace companies, shipbuilding industries and consumer product manufacturers.
Read more... Aerodynamics Simulation: Coupling CFD with MBD, FEA and 1D-System Simulation
Aerodynamics studies can cover the full speed range of low speed, transonic, supersonic and hypersonic flows as well as turbulence and flow control. System properties such as mass flow rates and pressure drops and fluid dynamic forces such as lift, drag and pitching moment can be readily calculated in addition to the wake effects. This data can be used directly for design purposes or as in input to a detailed stress analysis. Aerodynamics CFD simulation with sophisticated tools such as MSC Cradle, Ansys Fluent and Siemens Star-ccm+ allows the steady-state and transient aerodynamics of heating ventilation & air conditioning (HVAC) systems, vehicles, aircraft, structures, wings and rotors to be computed with extremely high levels of accuracy.
Read more... Fatigue Analysis of Welded Structures Using the Finite Element Method
Enteknograte use advanced Numerical simulation software and methods to simulate the welding behavior in real service load condition and estimate its Durability and Fatigue Life with Ansys Ncode, Simulia FE-Safe, MSC CAEFatigue and FEMFAT. The Seam Weld and Spot Weld fatigue simulation enables the fatigue analysis of joints including different type of welding such as fillet, overlap, spot welds in thin sheets and laser welded joints.
Read more... Finite Element Analysis of Durability and Fatigue Life
Vibration Fatigue, Creep, Welded Structures Fatigue, Elastomer and Composite Fatigue with Ansys Ncode, Simulia FE-Safe, MSC CAEFatigue, FEMFAT
Durability often dominates development agendas, and empirical evaluation is by its nature time-consuming and costly. Simulation provides a strategic approach to managing risk and cost by enabling design concepts or design changes to be studied before investment in physical evaluation. The industry-leading fatigue Simulation technology such as Simulia FE-SAFE, Ansys Ncode Design Life and FEMFAT used to calculate fatigue life of multiaxial, welds, short-fibre composite, vibration, crack growth, thermo-mechanical fatigue.
Read more... Heat Transfer and Thermal Analysis
Fluid-Structure Interaction with Coupled CFD and Finite Element Based Simulation
We analyze system-level thermal management of vehicle component, including underhood, underbody and brake systems, and design for heat shields, electronics cooling, HVAC, hybrid systems and human thermal comfort. Our Finite Element (LS-Dyna, Ansys, Abaqus) and CFD simulation (Siemens Start-ccm+, Ansys Fluent , Ansys CFX and OpenFoam) for heat transfer analysis, thermal management, and virtual test process can save time and money in the design and development process, while also improving the thermal comfort and overall quality of the final product.
Read more... Multi-Phase Flows CFD Analysis
Multi-Phases flows involve combinations of solids, liquids and gases which interact. Computational Fluid Dynamics (CFD) is used to accurately predict the simultaneous interaction of more than one combination of phases that can be gases, solids or fluids. Typical applications involve sprays, solid particulate transport, boiling, cavitation, state-changes, free surface flows, dispersed multiphase flows, buoyancy problems and mixed species flows. For example, the risks from flow or process-induced vibration excitation of pipework are widely acknowledged in onshore process plants, offshore topsides and subsea facilities.
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