What is the key assumption you must make to do this problem

Reference no: EM13563822

A catheter is a specialised needle intended for long-term insertion into a vein in a patient's arm. Engineers are redesigning them to cause less discomfort and damage. An intravenous chemotherapy system is based on a new catheter design. A liquid drug flows to the patient from a plastic bag via through a smooth plastic tube. The liquid drug completely fills the tube at the start of the procedure. The bag is at atmospheric pressure and it is 0.75 m vertically above the catheter. The tube is 2 mm in diameter and 2.0 m long. The average blood pressure in the vein is 6500 Pa gauge. The density of the liquid drug being supplied is 1020.4 kg/m

3 and its dynamic viscosity is 2 x 10-3 Pa.s. Exactly 314 mL of the drug must be supplied. In a laboratory experiment, you measured a fitting head loss for the catheter equivalent to 0.068 m of the liquid drug.

(a) What is the key assumption you must make to do this problem?

(b) How long will it take to supply the required amount of drug?

Reference no: EM13563822

Questions Cloud

Is the state water-quality standard being met downstream : If the state standard downstream is not met, the state has informed town 1 that it must treat its sewage further so the downstream standard is met. Use a mass balance approach to show that the state%u2019s request is unfeasible.

Calculate the peak bending moment for the 4x10 roof beam : Show a clear, dimensioned FBD for the 2x10 rafters. For the 2x10 rafters calculate the peak moment in units of ft. lb. For the 4x10 roof beam, assume the 4x10 roof beam is pinned to the subsequent 10ft section over each of the interior 4x4 columns. N..

Calculate the chord length between stations : Calculate the chord lenght between stations 75.00 and 75.75 on a circular curve with a Da = 5.5 degrees (arc definition) ? Da is degree of curve not deflection angle.

What should be the outside diameter if the load is carried : A circular tube has a wall thickness of 10 mm. It is required to carry a load of 1000 kN with a factor of safety of 2.0. The length of the tube is 4 m. What should be the outside diameter if the load is carried in?:

What is the key assumption you must make to do this problem : A catheter is a specialised needle intended for long-term insertion into a vein in a patient's arm. Engineers are redesigning them to cause less discomfort and damage. An intravenous chemotherapy system is based on a new catheter design. A liquid dru..

Determine the maximum shear stress : Water flows through a 200 m long ,30 cm diameter steel pipe with surface roughness 0.046 mm at a rate of 0.25 m^3/s .Find the pressure(P2)considering both friction and minor losses if P1=500 kPa;Z1=20m; Z2=10m ; L=200m ; K=10.0 ; D=30 cm?

What is the average velocity of the body for the time : What is the average velocity of the body for the time interval, t = 0 and the time that it crosses the X-axis?

Determine the difference between the pressure is acting : Shaquille O Neal, who is listed as 7`1" tall is out of the NBA Playoffs and so has time to visit is pool. If he stands vertically in the water, completely submerged, determine the difference between the pressure is acting at his head and at his toes,..

Determine the height of the building in feet : The basic barometer can be used to measure the height of abuilding. If the barometric readings at the top and at the bottomof a building are 28.7 and 29.7 in Hg, respectively, determine the height of the building in feet. Assume an average density of..

User Account

All Pages