I am doing a transient simulation for blood flow inside patient-specific abdominal aorta aneurysm geometry. The geometry has severe proximal aneurysm angulation and it is also considered to be complex and tortuous.
When i calculated the Reynolds number, it ranges between laminar and turbulent flow. There are many studies used laminar. However, if i used turbulent for my study.
Can anyone give more reasons/evidence to support these case and arguments other than Reynolds number?
Thank you
Hi Yousif......your work and prior research on this subject looks fascinating.
Looking at your lab description,you have access to CFD....have you been able to factor in variables such as...
https://en.wikipedia.org/wiki/Coand%C4%83_effect
and vortex formation?
Also variables such as viscosity varying according to hydration and Hb values?
All of those are just possibilities which may give rise to unusual flow patterns and may influence the onset of turbulent flow,and as an intensivist and vascular anaesthesiologist,I'm not going to be able to give anything more than a few guesses.
You may already have considered the possibility of flow switching between laminar and turbulent during different phases of the arterial flow,so aside from the Reynolds number,I think you have quite a challenge on your hands.
Good luck.
Ian
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