What is it about?

A blood analogue with water, gum and small particles is created with similar properties of real blood. A formula to model the blood properties is also provided for numerical simulations. Simulation results using the new non-Newtonian blood model were validated with a parallel experiment. We found that the results based on the current model can provide more accurate blood flow information in an aneurysm for prediction of important hemodynamic factors.

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Why is it important?

1. We proposed a non-Newtonian blood viscosity model by integrating shear rate and temperature influences together; 2. We developed the first experimentally validated Computational Fluid Dynamics (CFD) model using Particle Image Velocimetry (PIV) measurements in a patient-specific cerebral aneurysm model in vitro.

Perspectives

This piece of work provides an important platform for researchers to study the initiation, growth, and rupture of aneurysms, thus a more informative treatment strategy will be anticipated for this group of patients.

Zifeng Yang
Wright State University

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This page is a summary of: Hemodynamic characteristics in a cerebral aneurysm model using non-Newtonian blood analogues, Physics of Fluids, October 2022, American Institute of Physics, DOI: 10.1063/5.0118097.
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