Rediseño geométrico de un impulsor de sangre considerando la distribución de esfuerzos y deformaciones debida a la interacción del fluido que atraviesa el dispositivo y su estructura

In previous projects related to the development of earlier stages of a blood flow impeller, the stresses
(normal, shear, bending, and torsional) and deformations that a blood flow impeller will experience
operating at angular velocities bigger than 7000 rpm were obtained through computational simulations.
These data help determine the mechanical property ranges needed to meet the appropriate
hemodynamic requirements for operation; such results were convenient to define a list of materials
suitable for fabricating the impeller under study.
In this work, multiphysics numerical modeling and simulation are going to be used to analyze the fluidstructure
interaction of the impeller, using the geometry and conditions previously defined in [1]. This is
going to be performed using computational fluid dynamics, based on the finite element method. The
geometry, angular velocities, blood model, and velocity and pressure fields obtained in previous studies
will be used as inputs. The impeller used is novel and similar geometries have not been found in the
literature, which is why the information that can be generated in this project is relevant.
The purpose of this study is to compile, update, and use the studies carried out in numerical simulation of
stress and deformation distribution in the impeller at operating speeds and use them to adjust the
geometry of the simulated impeller to improve its hemodynamic performance for this purpose the shape
optimization methodology is going to be used.

Proponer modificaciones al modelo geométrico del impulsor sin eje central, a partir de resultados obtenidos de las simulaciones de la interacción fluido estructura, mejorando el desempeño
hemodinámico de dicho impulsor.

Salud