Products: ABAQUS/Standard ABAQUS/Explicit
Benefits: Enhancements to the co-simulation interface for fluid-structure interactions include improvements to the coupling and rendezvousing schemes and support for additional features.
Description: Fluid-structure interaction (FSI) problems can be solved using the co-simulation technique by coupling a computational fluid dynamics analysis with ABAQUS using the Mesh-based parallel Code Coupling Interface (MpCCI).
Enhancements to the co-simulation interface using MpCCI 3.0.5 include:
Improvements to the coupling schemes: ABAQUS includes a new synchronization point at the start of the co-simulation analysis step. Fluid forces can now be transferred and included in the first increment, thus avoiding the “empty increment” and simplifying the start of a coupled simulation.
Improvements to the rendezvousing schemes: ABAQUS provides several rendezvousing schemes to provide flexibility in defining the frequency of data exchange for control over solution accuracy and analysis cost. The coupling step size can be constant or variable. A variable coupling step size can be defined by ABAQUS or the third-party analysis as the simulation evolves. For steady-state simulations data can be exchanged in an asynchronous manner by running the computational fluid dynamics analysis interactively.
Support for restart capability: an FSI co-simulation can be restarted from a previously saved state.
Support for axisymmetric models: MpCCI will transform and scale solution quantities that are exchanged appropriately when the analyses use different conventions for axisymmetric models.
Independence of unit system between the structural and the computational fluid dynamics models: the restriction that the ABAQUS model needs to be in SI units to couple with the computational fluid dynamics model has been removed. MpCCI provides unit conversions for all solution quantities that are exchanged.
Support for additional analysis procedures: co-simulation is now available for use in the following procedures:
Support for additional solution quantities: export of nodal velocities and import of field variables are now supported for applicable analysis procedures.
Reorganization of the co-simulation interface with the addition of co-simulation between ABAQUS/Explicit and the occupant simulation program MADYMO.
The ABAQUS User's Guide for Fluid-Structure Interaction Using ABAQUS and FLUENT is available via the ABAQUS Online Support System (AOSS).
Co-simulation using MpCCI is an add-on analysis capability that requires the following license-managed components:
ABAQUS Version 6.6
MpCCI 3.0.5
FLUENT 6.3