A liquid drug, with viscosity and density of water, is to be administered through a hypodermic needle. The inside diameter of the needle is 0.25 mm and its length is 50 mm. Ignore minor head losses. Determine; a) The maximum volume flowrate Q for which the flow will remain laminar, e.g. Re <2000. b) The friction factor for the flow in part a) c) The pressure drop PA - Ps across the needle for the flow in part a)

A liquid drug, with viscosity and density of water, is to be administered through a hypodermic needle. The inside diameter of the needle is 0.25 mm and its length is 50 mm. Ignore minor head losses. Determine; a) The maximum volume flowrate Q for which the flow will remain laminar, e.g. Re <2000. b) The friction factor for the flow in part a) c) The pressure drop PA - Ps across the needle for the flow in part a)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

What is the minimum pipe diameter in cm that can be recommended if the flow is 5 m^3/s and the design velocity if the system is 3 m/s?
Flow Speed in a Channel The speed of water flowing in achannel, such as a canal or river bed, is governed by theManning Equation,
The flow rate of a hydraulic fluid with a Sg of 1.08 through a 2-in. I.D. orifice is 50 gal/min. If the pressure drop across the orifice is 5 lbf/in.", what is the discharge coefficient?
SOLVE CAREFULLY!! Please Write Clearly and Box the final Answer ( Show all steps ) Question : A good curve-fit to the head vs. flow for the 32-inch pump in the image shown below is: H(inft)≈500−(2.9E−7)Q2, Q in gal/min Assume the same rotation rate, 1170 r/min, and estimate the flow rate this pump will provide to deliver water from a reservoir, through 900 ft of 12-inch pipe, to a point 150 ft above the reservoir surface. Assume a friction factor f = 0.019. What is the pump efficiency at this operating point??? HINT : 150 ft above the reservoir surface.
Submit your question to our 24/7 subject matter experts with Masters and PhDs and get a solution in as fast as 30 minutes* Provide a complete and clear solution Considering the figure, what is the discharge in each pipe if the expected head loss is 5.5 meters?
What is the proper model flow rate?
You only know one point on a pump curve, where a water pump produces 20 m of hydraulic head at flow rate of 3.67 L/s, and you want to use this to pump water from a lower tank to an upper tank located 15 m higher. Both tanks are open to the atmosphere. Briefly explain your reasoning, in 1‐2 sentences, for each of the following. a) Should this pump be placed next to the lower tank or the higher one? b) Given the data point you have from the pump curve, will the flow rate be higher or lower than 3.67 L/s if the water is pumped exactly 15 m uphill?
26. Inlet and throat diameters of a horizontal venturimeter are 270 mm and 130 mm respectively. The liquid flowing through the venturimeter is water. Pressure intensity at inlet is 19 N/cm2, while pressure at throat is 48 kPa. Find flow rate of water in lit/min, assuming Cd is 0.9 and also draw the neat sketch. i) Actual flow rate =
What is the Reynold’s number for a flow of oil (SG = 0.80, ? = 0.00200 lb-s/ft2) in a 6-in diameter pipe at a flow rate of 10ft3/s. Is the flow laminar or turbulent? thank you!
Gentlemen, please check and help me with question #3 Tank filled with water and orifice diameter of 3 cm in the bottom. Height between centre of orifice and water level 3 m. Coefficient of discharge - 0.64, coefficient of velocity- 0.97. Find: 1. Actual jet velocity? This one I know how to do. V(actual) = square root from 2gH 2. Jet diameter? This one I know as well. Coefficient of contraction= coefficient of discharge/ coefficient of velocity Diam of jet we will find from formula: Coefficient of contraction = (diameter of jet/diameter of orifice)^2 3. How long will it take for jet to be established?
Suppose the pump of Fig. is situated between two large water tanks with their free surfaces open to the atmosphere. Explain qualitatively what would happen to the pump performance curve if a valve in the piping system were changed from 100 percent open to 50 percent open, all else being equal. Repeat for the system curve. What would happen to the operating point—would the volume flow rate at the operating point decrease, increase, or remain the same? Indicate the change on a qualitative plot of H versus V. , and discuss.
Water at 60°F is pumped from a reservoir to the top of a mountain through a 6-in. Schedule 120 pipe at an average velocity of 12 ft/s. The pipe discharges into the atmosphere at a level 3,000 ft above the level in the reservoir. The pipeline itself is 4,500 ft long. If the overall efficiency of the pump and the motor driving it is 70 percent and the cost of electric energy to the motor is 4 cents per kilowatt hour, what is the hourly energy cost for pumping this water?