These topology optimization improvements are thanks to a new Density Model feature that introduces a minimum length scale: the filter radius. Topology optimization for structural mechanics and fluid flow now involves substantially less trial and error. Density Model Feature for Topology Optimization Read more about these optimization features below. It can also be used to predict the lifetime of a protection system as well as the impacts of anode consumption, stray currents, impressed cathodic currents, and coating degradation.For users of the Optimization Module, COMSOL Multiphysics ® version 5.4 includes a Density Model feature for topology optimization, the ability to combine a Parametric Sweep study with derivative free optimization, and new models to demonstrate the Density Model feature. This specialized modeling functionality can be used to investigate how pipelines may interfere with the protection systems of other structures, for example. The Corrosion Module includes specialized functionality for modeling corrosion protection systems at both the microscale and macroscale. It can also be used to model corrosion processes in the automotive industry. The Corrosion Module can also be used to model road bridges and building infrastructure, water dams and hydropower equipment, and ships, submarines, and harbors. These include sacrificial anode cathodic protection (SACP), impressed current cathodic protection (ICCP), coating systems, and anodic passivation protection.ĬOMSOL Multiphysics ® and the Corrosion Module can be used to study protection systems and optimize their designs to support many types of structures, such as offshore windmills, subsea oil platforms, and onshore pipelines, plants, and storage tanks. There are many corrosion prevention methods that can be used to help maintain the structural integrity of structures susceptible to corrosion. This multiphysics modeling functionality is available for phenomena involved in problems like stress corrosion cracking (SCC) and oxide jacking in concrete. With the underlying capabilities of the COMSOL Multiphysics ® platform, the Corrosion Module can be combined with other add-on products to model coupled phenomena, such as heat transfer and structural mechanics. The electrolyte can be described as a thin layer of moisture, a porous material, or a liquid electrolyte. The module makes it easy to define relevant boundary conditions, surface reactions, and bulk electrolyte conditions. These corrosion processes stem from similar types of electrochemical phenomena for which the transport and balance of both charge and mass must be considered. It can also be used to model sweet and sour corrosion in oil and gas systems, corrosion in reinforced concrete, and corrosion from stray currents. The Corrosion Module can be used to model a wide variety of corrosion processes, such as galvanic, pitting, crevice, atmospheric, and general corrosion. The transport and reaction processes that describe corrosion and corrosion protection systems can be modeled in 1D, 2D, and 3D using the finite element method (FEM) and boundary element method (BEM). The module includes a thermodynamic database with electrode potentials and a selection of kinetic expressions for the most common redox reactions at these surfaces. The Corrosion Module also includes capabilities for describing in detail the charge transfer reactions that are responsible for corrosion occurring at electrolyte–metal surfaces. The modeling process is streamlined by the software's capacity to describe the transport processes in an electrolyte, including the transport of ions and neutral species as well as the balance of current in metal structures. The Corrosion Module, an add-on to COMSOL Multiphysics ®, enables engineers and scientists to effectively model corrosion processes and protection systems in an intuitive user interface. Modeling and simulation are powerful tools for understanding corrosion and designing and optimizing corrosion protection systems. Model Corrosion Processes and Corrosion Protection Systems
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