Nowadays, humans are suffering from chronic cardiovascular diseases, including Congenital Heart Defect (CHD). These diseases have far-reaching consequences, such as disruption of the daily life of humans by reducing their ability to perform daily routines. This problem is due to impaired cardiac pumping capability. The present numerical simulation studied the effects of CHDs on pressure drop and AWSS. Numerical calculation of non-Newtonian blood flow parameters, including power-law indices and the Reynolds number, were also investigated. To construct a 3D model of CHDs, an OSS program using DICOM and MRI was used. Besides, the vessel wall was assumed as solid. The non-Newtonian blood flow was assumed as a laminar flow with the slip boundary conditions at the vessel wall. AWSS, pressure drop, and dimensionless heat transfer coefficient are directly correlated with power-law indices, Reynolds number, and constant heat flux boundary conditions of the body. CHDs increased velocity, pressure drop, and AWSS in all steps of the simulation process.

中文翻译：

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用幂律模型研究非牛顿血流：冠状动脉先天性心脏病对特定年龄类型的影响

如今，人类患有慢性心血管疾病，包括先天性心脏病（CHD）。这些疾病具有深远的影响，例如通过降低人类执行日常生活的能力来破坏人类的日常生活。这个问题是由于心脏泵血能力受损。目前的数值模拟研究了 CHD 对压降和 AWSS 的影响。还研究了非牛顿血流参数的数值计算，包括幂律指数和雷诺数。为了构建 CHD 的 3D 模型，使用了使用 DICOM 和 MRI 的 OSS 程序。此外，假设容器壁是实心的。非牛顿血流假设为层流，在血管壁处具有滑动边界条件。AWSS，压降，和无量纲传热系数与幂律指数、雷诺数和物体的恒定热通量边界条件直接相关。CHD 在模拟过程的所有步骤中都增加了速度、压降和 AWSS。