Accelerate the analysis of complex transient applications with rapid meshless CFD

Simcenter SPH Flow is a rapid meshless computational fluid dynamics (CFD) software that provides designers and analysts a fully integrated workflow to easily and quickly improve their designs earlier in the development cycle. It uses the innovative smoothed-particle hydrodynamics (SPH) method.

The SPH method is part of a new generation of numerical methods, developed to overcome meshing-related constraints with traditional approaches while still being based on the Navier-Stokes equations. With its Lagrangian characteristic and its particle-based approach, Simcenter SPH Flow is particularly well suited for highly dynamic flows, deformable and complex boundaries and interfaces with fragmentations/reconnections.

Simcenter SPH Flow includes a fully integrated simulation environment (Simcenter SPH Flow Studio) which provides an intuitive guided user interface for automatic geometry preparation, simulation setup, and solution analysis. Together, they accelerate the analysis of complex applications that involve highly dynamic fluid flows and motion.

Simcenter SPH Flow

Smoothed-Particle Hydrodynamics

In order to go faster while modeling the complexity of today's products, computational fluid dynamics (CFD) engineers need to be able to choose the best possible method depending on accuracy and turnaround time requirements for a given simulation project. Smoothed-particle hydrodynamics (SPH) is a rapid meshless CFD simulation method that complements conventional mesh-based approaches. Based on the Navier-Stokes equations, the particle-based SPH method in Simcenter is well suited for highly dynamics flows, deformable and complex moving geometries and fluid interfaces with fragmentations/ reconnections.

Co-Simulation

Applications like electric motor cooling, tire hydroplaning, automotive water management for sensor soiling, water impingement, rain on windshield, all require an interdisciplinary engineering approach. To cope with the resulting complexity, engineers need to assess the performance of products across disciplines with integrated simulation solutions. For many of these applications, CFD simulations need to be closely coupled with structural mechanics. Simcenter allows the coupling of the SPH with FEM solvers to simulate fluid-structure interactions. For applications where aerodynamic forces have a relevant impact on the primary (liquid) phase, SPH can be coupled with another SPH simulation or Simcenter’s mesh-based CFD methods. This allows engineers to stay integrated while coping with multiphysics complexity.

Local Particle Refinement

Airplane ditching, water wading, gearbox lubrication, dam break scenarios all share the challenge of highly dynamic local effects with steep gradients and a fragmentation of the associated liquid surface. Local particle refinement for SPH in Simcenter enables engineers to precisely capture areas of interest with higher resolution at lower CPU cost. SPH’s static or moving refinement boxes ensure high accuracy simulations at low computational and setup effort, hence enabling CFD engineers to go faster without compromising CFD simulation fidelity.

Moving Objects

Gearbox lubrication, vehicle water wading, windshield wipers are just a few examples that are characterized by complex motions. With Simcenter’s motion models for CFD simulations, engineers can model the complexity and predict the real-world fluid dynamics performance for such moving objects. Mitigating the need for computational grids, the SPH solution in Simcenter empowers CFD engineers to easily and quickly set up and simulate a broad range of complex body motions. To accurately capture fluid dynamics under transient conditions and moving geometry, SPH allows engineers to simulate the dynamic 6-DOF motion of bodies, including any sort of rotation or translation motions. This allows defining even the most sophisticated motions with minimum effort to accurately replicate real-world product operation conditions and predict resulting fluid dynamics performance.

Rheology

Sealing and assembly processes, slurries, extrusions, material processing, food and beverage industries that work with mixers, require engineers to simulate fluids dominated by diffusion and viscous or viscoelastic behavior. Simulating rheology CFD accurately is the key to reducing power consumption, emissions, and raw material usage while improving product reliability, user experience, and liability costs. Simcenter offers the ability to simulate such applications with non-Newtonian fluids.

Surface Tension

The impingement of liquids plays a crucial role in many aerospace, powertrain and automotive applications. Simcenter’s predictive surface tension model in SPH accurately captures wettability effects on different surface conditions, for instance by defining highly diverse contact angles to study from hydrophobic to hydrophilic materials. With this high-fidelity model, Simcenter can also predict capillary effects in the most narrow areas.

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Accelerate the analysis of complex transient applications with rapid meshless CFD

Simcenter SPH Flow

Smoothed-Particle Hydrodynamics

Co-Simulation

Local Particle Refinement

Moving Objects

Rheology

Surface Tension

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