Outflow boundary conditions for 3D simulations of non-periodic blood flow and pressure fields in deformable arteries

Details Outflow boundary conditions for 3D simulations of non-periodic blood flow and pressure fields in deformable arteries Outflow boundary conditions for 3D simulations of non-periodic blood flow and pressure fields in deformable arteries

2010-12-03

arxiv.org/abs/1012.0736v1

Computer Methods in Biomechanics \& Biomedical Engineering 13, 5 (2010) 625-640

Physics

Medical Physics

Scientific paper

10.1080/10255840903413565

The simulation of blood flow and pressure in arteries requires outflow boundary conditions that incorporate models of downstream domains. We previously described a coupled multidomain method to couple analytical models of the downstream domains with 3D numerical models of the upstream vasculature. This prior work either included pure resistance boundary conditions or impedance boundary conditions based on assumed periodicity of the solution. However, flow and pressure in arteries are not necessarily periodic in time due to heart rate variability, respiration, complex transitional flow or acute physiological changes. We present herein an approach for prescribing lumped parameter outflow boundary conditions that accommodate transient phenomena. We have applied this method to compute haemodynamic quantities in different physiologically relevant cardiovascular models, including patient-specific examples, to study non-periodic flow phenomena often observed in normal subjects and in patients with acquired or congenital cardiovascular disease. The relevance of using boundary conditions that accommodate transient phenomena compared with boundary conditions that assume periodicity of the solution is discussed.

Affiliated with

Also associated with

No associations

Rating

Outflow boundary conditions for 3D simulations of non-periodic blood flow and pressure fields in deformable arteries does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Outflow boundary conditions for 3D simulations of non-periodic blood flow and pressure fields in deformable arteries, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Outflow boundary conditions for 3D simulations of non-periodic blood flow and pressure fields in deformable arteries will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-515191