View lab report - pex 05 activity 1 from biol 204 at st cloud name: courtney exercise 5: cardiovascular dynamics: activity 1: studying the effect of blood vessel radius on blood flow rate lab. The relationship between the flow rate and the radius size is direct with the formula flow rate=radius to the fourth power 4 what happens to blood vessels in the body if increased blood flow is needed the blood vessels what happened to the flow rate as the right vessel radius was increased when the. On a network of vessels while providing more detailed information about fluid dynamics in a specific region thus, the immediate coupling conditions based on continuity of normal stresses, flow rate, pressure, or a vessels in such a situation, coupling between 3d and 1d domains happens on both upstream and down. Until the flow rate of pbs solution increases up to 33 ml/h, the blood in the left- side channel moves to the right direction when the flow rate of pbs solution is set to be 33 ml/h, flow-switching phenomenon occurs given that the viscosity of the pbs solution is approximately 100 ± 005 cp measured by a. There are three primary factors that determine the resistance to blood flow within a single vessel: vessel diameter (or radius), vessel length, and viscosity of the the relationship between flow and vessel radius to the fourth power (assuming constant δp, l, η and laminar flow conditions) is illustrated in the figure to the right.
Where r = inside radius of the vessel, l = vessel length, and η = blood viscosity it is important to note that a small change in vessel radius will have a very large influence (4th power) on its resistance to flow eg, decreasing vessel diameter by 50% will increase its resistance to flow by approximately 16 fold if one combines.
Blood flow, we represented the artery in accurate 3d space and determined detailed characteristics of ess and arterial wall/plaque significant increase in plaque thickness and enlargement of the outer vessel wall, such that lumen radius remained sites and rate of progression of coronary artery disease (cad). Particles, they increase the viscosity of blood and affect the behavior of the fluid blood is approximately four times more viscous than water moreover, blood does not exhibit a constant viscosity at all flow rates and is especially non-newtonian the main systemic artery from the heart is the aortic arch, which is a 3d bend.