ACUSIM Software has been acquired by Altair Engineering and the AcuSolve software is now part of Altair's HyperWorks product line. Click here to obtain latest information about AcuSolve.

Image Gallery

This page bears testimony of the diversity of AcuSolve applications and the wide range of features offered by AcuSolve.

In a Chemical mixing tank, An impeller motor must have sufficient torque to ramp through its startup phase. A sliding mesh simulation allows us to study the ramping process of a Pitched Blade Turbine. The flow separation that causes the increased torque is easily visualized by emitting curved velocity vectors from the impeller tips. [14M ]

Blending pattern visualization of a static mixer with Particle Tracking To visualize the blending pattern of a center-mounted 4-element SMX static mixer, we injected 250,000 particles at each inlet and recorded the plane intersections at 500 planes along the axis of the pipe. Lagrangian particle tracking lacks the diffusive errors of species transport allowing us to obtain highly resolved images. [13M ]

This animation depicts a straked oil platform riser responding to an impulsive load from a simulated ocean current. AcuSolve's Practical Fluid Structure Interaction capability was used to compute the deformation of the riser. Note the decaying oscillation of the riser displacement as it responds to the fluid forces. [19M ]

A simple channel flow demonstrating the structural deformation from a sinusoidal inflow. The inflow is always positive. The structural deformation is based on a modal analysis. [2.4M ]

This is the FSI benchmark "FLUSTRUCK" solved with OpenFSI interface of MD-NASTRAN. A thin elastic bar immersed in incompressible fluid develops self-induced time-periodic oscillations of different amplitude depending on the material properties assumed. This benchmark has been considered to validate the Direct-Coupling FSI (DC-FSI) technology to characterize the coupled dynamics (i.e., forces, deformations, frequencies). [8.8M ]

This example problem demonstrates the capability of AcuSolve's DC-FSI with the OpenFSI interface to evaluate the flutter characteristics for the subsonic flow. The wing model is based on the HA145E configuration, which is a swept back plate-like wing, symmetric from top to bottom.

Some FSI applications involve large scale deformations where the flexible components deform beyond the extents of the initial simulation domain. AcuSolve's mesh motion technology provides means for users to accommodate for this situation by deforming the entire domain as the simulation progresses. This animation illustrates this technology by mimicking the motion of a an oil platform riser subjected to undersea currents. Note that the motion of the bounding box walls are related to the motion of the riser, but damped in time and space. [3M ]

Due to the complex interactions of vortex-induced vibrations (VIV) and downstream wake dynamics, the design of riser arrays has been an area of great uncertainty in the offshore industry. The focus of this study is to investigate the VIV response of two flexible risers in cross-flow using AcuSolve. Bare and straked geometries are simulated, and the results are successfully compared against experimental results.[2.5M ]

Demonstration of fluid sloshing subjected to a varying body force that simulates the motion of the container. This two dimensional simulation computes the motion of the fluid using ALE both for the free surface and for the movement along the container using the Guided Surface technology. [ 1.8M ]

Demonstration of fluid sloshing subjected to a varying body force that simulates the motion of the container. The motion of the fluid is calculated using ALE both for the free surface and for the movement along the container using the Guided Surface technology. [ 12.4M ]

Simulating the impact of strong currents that induce vortex shedding and vortex induced vibration (VIV) on offshore oil platforms. FSI and Free Surface Modeling are in action in this animation. [ 18.9M ]

These images depict the turbulent wake and streamwise blade tip displacement from a fully coupled fluid structure interaction simulation of a wind turbine. [ 56M ]

FSI Calculations on a Shock Absorber [ 1.3M ]

Simulating the squirting of toothpaste from a tube upon squeezing.[ 421k ]

Simulates a tube bundle in cross-flow. The computed structural deformation is based on a modal analysis. [ 17.8M ]

Simulates deformation of a soft concrete block under gravity. A quarter of the concrete block with two symmetry planes and a slip floor was used for simulation. The animation shows how a carefully meshed block can simply deform via ALE technology, and without any remeshing. The volume of the concrete block was preserved up to four digits all the way until the last time step. [ 112K ]

Calculates flow through a channel where the two sides are separated by an opening "door." The motion of the door is prescribed, and the boundary condition varies depending on whether or not a matching interface surface is found. [ 1.1M ]

Isosurfaces of turbulent structures resulting from the flow over a NACA0012 airfoil at 10 degrees angle of attack are shown in this animation. The deformed wing shape is depicted in the plot and illustrates the vertical motion of the wing in response to the aerodynamic loading. This case was computed using DES on an unstructured mesh consisting primarily of tetrahedral elements. [ 8.5M ]

This example computes the deformation of a NACA0012 airfoil attached to a generic airframe at an angle of attack of 10 degrees. The structural deformation was computed internally using the Practical Fluid Structure Interaction (P-FSI) capabilities of AcuSolve and mode shapes generated by Abaqus. The mesh position was updated in response to the structural deformation using AcuSolve's Arbitrary Lagrange Eulerian (ALE) mesh motion. [ 7.2M ]

This animation illustrates the simulation of a valve. The valve begins in the 45 degree open position, moves to fully opened, then finally to the fully closed position. The mesh motion was accomplished using a combination of ALE, interface surface, and guide surface. [ 38M ]

The efficiency of chemical mixing in a stirred tank is analyzed with multi-species and sliding mesh features of AcuSolve. [ 4.1M ]

The efficiency of chemical mixing in a stirred tank is analyzed with multi-species and sliding mesh features of AcuSolve. [ 4.7M ]

This animation shows the mixing of a 200,000 gallon water storage tank via the PAX Water Technologies innovative Lily impeller. The animation shows 81 streamlines computed from a steady state solution using AcuTrace, AcuSolve’s unique particle tracking program. The results show the excellent mixing characteristics of the PAX Water Lily Impeller with complete circulation and no stagnant zones, both of which are important in meeting government mandated standards for potable water storage tanks. [ 3.5M ]
Images courtesy of PAX Water Technologies, Inc.