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Newtonian and non-Newtonian CFD Models of Intracranial Aneurysm: A Review

CFD Letters
Volume 12, No. 1, January 2020, Pages 62-86

Samar A. Mahrous1,2,*, Nor Azwadi Che Sidik1,3, Khalid M. Saqr2,4

1 Department of Thermo-fluid Universiti Teknologi Malaysia, 81310 UTM Skudai, Malaysia
2 College of Engineering and Technology, Arab Academy for Science, Technology and Maritime Transport, P.O.BOX 1029 Alexandria, Egypt
3 Malaysia – Japan International Institute of Technology (MJIIT), University Teknologi Malaysia Kuala Lumpur, 54100 Kuala Lumpur, Malaysia
4 Research Center for Computational Neurovascular Biomechanics (RCCNB), Alexandria University Hospital in Smouha, 21554 Alexandria, Egypt
*Corresponding author:


Intracranial aneurysms; computational fluid dynamics (CFD); hemodynamics; blood rheology models; patient-specific models


Computational Fluid Dynamics (CFD) has become an essential research tool to investigate the physical, biophysical and pathophysiological processes leading to the formation, growth and rupture of intracranial aneurysms (IAs). The diverse anatomical complexities of IAs dictate a staggering level of sophistication inherited in the CFD modeling process. From medical imaging to wall shear stress mapping on the aneurysm walls, there are numerous physical assumptions related to blood flow and wall dynamics. The majority of such assumptions remain controversial until today. This review is an endeavor to summarize, in a critical and comprehensive manner, the different assumptions used to calculate blood viscosity in CFD models of IA hemodynamics. The tabulated summaries of literature presented herein also highlight the inconsistency of location choice and imaging techniques used to select IA models for CFD studies. This review presents a roadmap for the state-of-the art knowledge about blood viscosity models used with IA CFD models, and suggests future research directions to further characterize the nature of blood flow which contributes to the improvement of diagnosis and management of IAs.


Samar, A. Mahrous, et al. “Newtonian and non-Newtonian CFD Models of Intracranial Aneurysm: A Review.” CFD Letters 12.1 (2020): 62-86.

Samar, A. M., Nor Azwadi, C. S., & Khalid, M. S.(2020). Newtonian and non-Newtonian CFD Models of Intracranial Aneurysm: A Review. CFD Letters, 12(1), 62-86.

Samar A. Mahrous, Nor Azwadi Che Sidik and Khalid M. Saqr.”Newtonian and non-Newtonian CFD Models of Intracranial Aneurysm: A Review.” CFD Letters. 12, no. 1 (2020): 62-86.

Samar, A.M., Nor Azwadi, C.S., and Khalid, M.S., 2020. Newtonian and non-Newtonian CFD Models of Intracranial Aneurysm: A Review. CFD Letters 12(1), pp. 62-86.

Samar AM, Nor Azwadi CS, Khalid MS. Newtonian and non-Newtonian CFD Models of Intracranial Aneurysm: A Review. CFD Letters. 2020;12(1): 62-86.


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