Blood fluid properties pdf

Red blood cell permeability, deformability and the electrical properties of hemoglobin conductivity and relaxation time were also examined. Karkenahalli srinivas computational fluid dynamics 4. What are the basic properties of the blood flow in the human body. Pdf physical parameters of blood as a non newtonian fluid. Blood helps in the transportation of different substances throughout the body.

Blood is a predominantly shear thinning fluid refer to figure 3, especially under steady flow conditions, and this property has the most important. Physical systems and applications as diverse as fluid flow in pipes, the flow of blood. Blood is a liquid connective tissue that contains cellular elements blood cells and fluid matrix plasma. This is followed by a discussion of the properties vapor pressure,energyand its various forms, the specific heatsof ideal gases and incompressible substances, and the coefficient of. One human study found dandelion to be an effective diuretic. When the ventricle contracts, a volume of blood is rapidly ejected into the arterial vessels. Properties of fluids in this chapter, we discuss properties that are encountered in the analysis of fluid flow. For biomechanics the most important information we need is the constitutive equation. An important mechanical property of fluids is viscosity. Shear rate flow property blood viscosity couette flow shear.

Physical parameters of blood as a non newtonian fluid. First we discuss intensiveand extensive propertiesand define density and specific gravity. Pdf blood is a complex suspension that demonstrates several nonnewtonian. A quasimechanistic mathematical representation for blood. Mathematical simulations of blood flow require an appropriate constitutive model that accurately reflects its unique rheological properties.

Toshio nakayama sample cfd results university of sydney tohoku university contact. Shearthinning properties of blood in large arteries. In western medicine, diuretic medications are used to rid the body of excess fluid, which can lead to lowered blood pressure. The reattachment length and the shear stress are determined as a function of speed in. Physics notes of mechanical properties of fluids download pdf. Blood is a heterogeneous multiphase mixture of solid corpuscles red blood cells, white blood cells and platelets suspended in a liquid plasma which is an aqueous solution of proteins, organic molecules and minerals refer to figure1. Fluids are those substances which can flow when an external force is applied on it.

Since the outflow to the arteriole is relatively slow because of their high resistance to flow, the. However thurston 21 reported that viscoelasticity is known to be a basic rheological property of blood. The exclusion of shear properties in blood flow modeling by using the newtonian. Plasma the plasma is the light yellow liquid portion of the blood and is about 90% water. Using newtonian blood in modeling blood flow for large arteries in. Its composition and function the blood in our circulatory system is a watery based fluid and consists of two basic components. Medium with bloodanalog mechanical properties for cardiovascular. Study of blood and its disease is known as hematology. The viscoelastic properties which make human blood non. Pdf nonnewtonian rheology in blood circulation researchgate. The rheological characteristics of blood are determined by the properties of these com.

Introduction to fluid mechanics the air we breathe, the water we drink, and the blood and other liquids that flow in our bodies demonstrate the close dependence of our lives on various fluids. Human blood is a nonnewtonian fluid, which shows shearthinning behavior. Newtonian and nonnewtonian blood flow over a backward. Physical parameters of blood as a non newtonian fluid ncbi.