血液宏观流变特性测量方法精度的改进及其应用研究

The hemorheological technique has been widely used in the hospital,but there exist some significant errors during the measurement.With the co-axial cylinders.rheometer the following subjects have been reseached.1) A kind of method, which can rectify the errors to measure the blood viscosity with software, was obtained by analyzing the steady flow in the cylinders with the blood constitutive equation. Moreover we also apply the method to the animal experiments and human standard hemorheological performance.2) The.inertia of the fluid and equipment can affect the measurement of the blood.elasticity and thixtropy. By analyzing their unsteady flow,a kind of method.to demonstrate the effects was set up. With the method we rectified the.errors in thixtropy measurement.

血液表观粘度与粘弹性、触变性可分别表示血液的稳态及动态宏观流变行为，有重要的临床价值，但其测量方法存在很多致误差因素，如流变仪中流场的不均匀性及流变仪的惯性影响等，这些问题是阻碍血流变发展及深层次应用的根源。本课题旨在使用数值方法对这些因素进行较全面的研究与修正，并以此为基础研究地区性的流变学指标标准值及指标的分类等。.