Question

Multiple-answer questions: one or more answers may be correct. Check all the cormrect answers. Question 1 (5 points) You want to increase the spatial resolution of a Particle Image Velocimetry system. Which ones of the following changes would you take into consideration O use a camera with larger pixel count O use seeding particles with larger density O divide the images into smaller interrogation windows O use a laser source with faster pulse rate O replace the 2D PIV with a Stereo PIV setup (5 points) Question 2 Consider a nurse performing an intramuscular injection. Which ones of the following assumptions are reasonably correct for the fluid flow inside the syringe barrel? cylindrical geometry O steady flow compliant walls pseudoplastic fluid O purely shear-driven flow (5 points) Question 3 Which ones of the following statements are correct, based on Murray's law? O the wall shear stress is constant throughout the systemic vasculature O the total cross-sectional area decreases at every arterial bifurcation O a branching arterial network is more energy-efficient than a set of parallel arteries all departing from the heart O in an asymmetric bifurcation, the smaller daughter vessel exhibits the more pronounced deflection from the parent's direction O the total length of the blood vessels in the human body cannot exceed 60,000 miles

Answer 1

1. Using camera of large pixel count, use seeding particle with larger density and dividing image into smaller interrogation window can be considered to increase spatial resolution.

2. Purely shear driven flow

3. The wall shear stress is constant throughout the systemic vasculature, total cross sectional area decreases at every arterial bifurcation and a branching arterial network is more energy effecient than a set of parallel arteries all departing from the heart are correct