Design And Analysis Stented Aneurysms For Human Body

Song, Jean Yau (2012) Design And Analysis Stented Aneurysms For Human Body. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Computational fluid dynamics (CFD) simulations are used to analyze stent after impant into human body , and analysis wall shear stress distribution and flow pattern at aneurysmarea. There are 3 types of stent dimension cases establish to investigate the blood flow conditions , and compare what is the different of hemodynamic of these cases. Comman iliac aneurysm have been selected as part of human body to do analyze. The diameter is based on previous biological scientist studies Mean diameter of common iliac arteries is 2.4-3.8 cm . Based on this information there are three cases which is 2.2 , 2.9 , 3.6 cm is developed . All the cases is analyzed under different stage of blood pressure . There are desirable , prehypertension and hypertension stage !.Analysis and design a suitable stent for aneurysms which investigate the blood flow phenomena by define the blood flow type criteria before simulation into CFD, such as velocity profile , pressure , imcompressible flow , pulsatile condition , isothermal condition , laminar flow and non slip condition . When there are inside pressure over the blood vessel , aneurysms with exist in the blood vessel wall, and the vessel may rupture when it reach the critical stage. The velocity results at center of diameter have a highest rising 33.97%at outlet throat for stent with diameter 2.2 cm thickness 0.85 mm to contrast to case 0.75 and 0.65 mm thickness stent . High Porosity to caused wall shear stress transform from inner to outer wall will be more effectively . The most significant reaction in wall shear stress is at inlet throat 00 mm to 20 mm .Case diameter 2.2 cm stent achieved highest ascended 2.44 % of total pressure . The static pressure drop on baundary layer at lmm along of stent were not exceed than 1.5 %among three cases.

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