Materials Selection and Computational Fluid Dynamics Study of a Coronary Stent
In this case study, we discuss the design requirements of a coronary stent that is typically used for atherosclerosis (plaque build-up in arteries causing them to narrow). We use Ansys tools such as the Ansys Granta EduPack™ set of teaching resources to support materials education and Ansys Fluent® fluid simulation software to understand and prioritize the desirable properties of a stent. In the first instance, we look at the material selection properties and propose different materials that are a good fit for the application while highlighting the mechanical performance. Stainless steel and nitinol are identified as good materials choices. In the second instance, we use computational modelling to predict the fluid dynamics of an artery with a stent. As predicted, the stent facilitates fluid flow within a diseased artery. This study highlights the importance of in silico testing with a design workflow that streamlines the process before prototyping.
Learning Outcomes
- Learn about different types of stents and their design requirements.
- Learn about the material selection methodology to select the best materials for the stent.
- Understand how to use Granta EduPack to find these material candidates.
- Learn about the design workflow linking materials selection to simulation.
- Understand the setup of using blood flow like the usage of User Defined Functions (UDF) to setup boundary conditions and pulsating flow of blood in the artery.
- Understand the properties in Ansys Fluent that will help describe this flow.
Applicable Courses for Use
- Biomaterials
- Medical Devices
- Material Selection
- Fluid dynamics
- Advanced fluid dynamics
- Computational fluid dynamics
- Viscous flows
Downloadable Content
- Pdf File
- Mesh files
- 2 case file.
