Pipe Definition and 1000 Threads

The diagram attached is a picture of the problem I have. I have a 10ft tall cylindrical tank with 20ft of pipe directly under it. The tank at full capacity can hold 100 gallons of water or 10 gallons per ft. I want to calculate the pressure of the water right before it leaves the pipe 20ft...

Homework Statement A cyclindrical pipe of length 29.5 cm closed at one end resonates with a tuning fork of frequency 864 Hz. Then mode of vibration of air in the pipe is(Velocity of sound in air=340m/s): The attempt at a solution V=Velocity, n=Frequency If l1 is the first resonating...

simple picture problem. looking for assistance in the explanation of it all. edit: discussion with a friend,problem is inspired by a scene in a tv show.

For minor losses, I read that the pressure drop is equal to the dynamic pressure * loss coefficient. However, in calculating dynamic pressure, it uses a single velocity. How do you determine this velocity when it will vary at the point of change in pipe diameter or direction? I have read...

Lets say I have a pipe and then another pipe inside a larger pipe. On the inside pipe I have an AC current I(t) and on the outer pipe I have to opposite AC current -I(t). So that when I am outside both pipes and I make my Amperian loop, the current enclosed is always zero. Now my question is...

Metal pipe and electric field Hello, Consider a metal pipe in which a natural gas and oxygen is flowing. One end of pipe is connected with high potential electric wire from grid station and other end is earthed. Whether explosion would result from it? please explain this to me. Thanks

how we doing i found the following information regarding finding the pressure drop in a pipe due to 90° bends. i was wondering could this be adapted for say a bend of 60° or 45°. what would be needed to change to the below information to allow this to happen?? thanking ou in advance. this would...

Hey everyone! I'm trying to determine the losses through a pipe network that consists of 254.5 feet of 0.75 inch diameter copper pipe. The flow rate is 0.37125 gpm, with a corresponding velocity of 0.26962 fps. The fluid is water at 150 degrees F. Based off that information, I have a...

Hi, I am hoping that someone could enlighten me about pipe schedules. I've searched online but there have been conflicting definitions for schedules, where some people refer to it as pressure and some referring to it as thickness. I need a pipe to be able to withstand 70bar of pressure...

Hi, I have no background in physics or engineering, I am a computer guy who is tasked with building a toy simulator for piping diagrams. Hoping I can get some help in this forum. Basically I am given a piping diagram with a bunch of widgets (pumps, heat exchanger, radiators, etc) that are...

Why is better to use the cold water pipe as a ground for electrons?

Homework Statement A water pipe tapers down from an initial radius of R1 = 0.22 m1 to a final radius of R2 = 0.08 m1. The water flows at a velocity v1 = 0.85 m1s-1 in the larger section of pipe. The water pressure in the center of the larger section of the pipe is P1 = 283640 Pa. Assume the...

hello everybody, I'm new here and i have this homework which i don't know how to solve it, please help me: Design the thickness of insulation for steam pipe of: -Pipe diameter 2 in. -Pipe length 200 m. -Saturated steam pressure 10 bar. -Ambient temperature 30°C. -Steam cost $4.5/MMbtu i...

Dear all, I have a thick-walled pipe with an inner radius a and an outer radius b. The pipe is mounted to an outer rigid surrounding by N number of screws (applied at radius b) equally distributed around the pipe. Given an applied moment M on the inner radius a, I want to calculate the forces...

Homework Statement see attachment Homework Equations C for cold side = mass flow rate of cold*Cp Cp is specific heat 1.) NTU=UA/Cmin 2.) ε=q/qmax 3.) qmax=Cmin*(T hot,in - T cold,in) 4.) NTU=(1/(Cr-1))*ln((ε-1)/(ε*Cr-1)) (Cr<1) 5.) Cr= Cmin/Cmax for the two small...

Gravity GPM for 1" pipe I am in the process of buying an 83 gal. fuel transfer tank. The tank is 48"L x 20"H x 20"W. Instead of buying pumps for filling up my 5 gallon gas tanks I was thinking about using gravity flow. The builder can install a 1" fitting at the base of the tank with a 1" hose...

Just a general question, if there is an obstacle in a pipe, such as a turbine, will the speed of the fluid before the turbine be the same as after it? Or will the turbine cause the speed in the whole pipe to slow down?

You are the Chief Engineer for a prominent hydraulics consulting company. Your client wants to pay you lots of money to design a system to deliver 1 m3/s from reservoir A at elevation 300 m to reservoir B at 500 m. The distance from A to B is 1000 km and the elevation between the two reservoirs...

PVC Open Pipe Organ...Help! Homework Statement Urgent As part of an assignment, I need to create an open pipe organ that plays two different octaves. I don't know anything about octaves or music, but Google defines octave as : A series of eight notes occupying the interval between...

I need to find the volume of air (ft^3) for this sample. The air is discharged at 40 psi for 1 minute and the diameter of the pipe is 0.5 inches (Area = 0.001363538 ft^2). I think I need to solve for the velocity of the air (vel = sqrt(2P/rho), where P is the pressure and rho is the density)...

i wish to design an exhaust system of my project car for minimum flow losses lets not focus on the exact figures just yet, just wish to confirm whether my design theory would work the setup would be something like this exhaust header > 7" length downpipe > 90 degree elbow > 20" straight pipe...

can someone explain to me why it seems that the smaller the diameter of pipe bend (i.e. 90 degree elbow = 30D) the shorter its equivalent length becomes? for 1.5" diameter = 45" equivalent length while 2" diameter = 60" length. does this mean 1.5" diameter 90 degree elbow has less friction than...

Hi, We have a steel tube with yield limit 1000 N/mm2. It is 250 mm long, outside diam. is 76 mm, inside diam. is 60 mm. It is plugged at both ends. Inside pressure is 0 (zero) and outside pressure due to submersion is 69 Mpa. Will this be safe? How can I calculate what pressure that would be...

I'm trying to connect water from a city water supply to a residential fire sprinkler system. The pipe needs to be typical black steel, and hydrostatic test results show a static pressure of 48-psi. What size pipe would I need to achieve at least 26-gpm flow? I've calculated friction loss to be...

Homework Statement Oddjob rolls a canister of nerve gas twoards Bond, who is at the bottom of a curved trench. The canister has a mass of 16 kg, a radius of r = 0.8 m, and a rotational inertia of 10 kg*m2. It starts with no velocity. If the trench has a radius of R = 3.5 m, how fast is the...

there is hollow cylinder of radii R carrying current I from one end of cylinder to another point.I mean it is not in circular path it is in straight line. (1) Is there any magnetic field at the cylinder? (2) What is magnetic field at any point inside cylinder. (3) does it feel any pressure due...

Hello Everyone, It has been a long time since I have performed a calculation such as what I am about to describe. I have been out of school for a while now, and just haven't had to use any of these skills in the work place. In any event, here are the parameters that are known at this point...

Drilling hole in 1-3/8" pipe for fulcrum I am designing a small crane for a special purpose. I am using a 17 ga. steel 1-3/8" ten-foot pipe as a fulcrum. I am going to drill a hole 2 feet from one end to run the axle through. That will leave 8 feet on the other side. Is there a table or...

I am trying to learn how to calculate pressure at the end of a pipe. The pipe is 2" PVc and has a flow rate of 14 gpm at teh end of a 35' run from the pump. How do I calculate pressure at this point?

Homework Statement Water flows through a 1.3 cm diameter pipe into a 295 L bathtub, which it fills in 5 min. What is the speed of the water in the pipe? Homework Equations V_in=v_L*t*A_L (Equation I got in my class lecture, I think its a variation of bernoulli's.) The Attempt at a...

What IS Pressure-- in a pipe? Whaddup, guys! Sorry to bug you with another question. So, I learned that Pressure = Force / Area. Pretty easy stuff. Water will exert a certain amount of force per area depending on how deep the object is submerged. But... what about in a pipe? There's...

Homework Statement See attached jpg for problem statement and diagram. I know we didn't discuss this type of problem in class. The rest of this homework set has been solving stress transformations with Mohr's circles for a given state of stress. I know how to find τxy (that was supposed to...

Dear all I am trying to work out a price of steel pipe that I have. I have 900 metres of 9 5/8 inch pipe it weighs 40 pounds per foot and the price is $1,600 a metric ton. Now if I want to get the price per metre then I understand that I have to divide by 2204.62, which is about how many...

Homework Statement A compressor is required to drive acetylene gas at 1.85 kg/s through a horizontal pipe, 68.7 m long. The maximum pressure that may be developed by the compressor is to be found, and gas pressure at the delivery end of the pipeline must be 470 kPa. The system is to...

Hello I have a vertical pipe with floating ping pong ball in it. I have fan at the bottom that that push the ball up. The pipe parameters: D=45mm L=1.07m Ball parameters: D=40mm M=2.7g I tried to change fan speed to move the ball but becouse turbulance the ball is not steady...

Homework Statement The pipe shown has a 180° horizontal bend in it as shown, and D is 20 cm. The discharge of water (ρ = 1000 kg/m3)in the pipe and bend is 0.30 m3/s, and the pressure in the pipe and bend is 100 kPa gage. If the bend volume is 0.10 m3 and the bend itself weighs 500 N...

Hi everyone, I am trying to determine the flow losses through a pipe with friction. I understand that the Mach number increases through the pipe to unity and that the flow cannot increase when unity is reached. If the pipe is longer than the hypothetical chocking length, what would be the...

Hello. Im bilding a device. I have 1m vertical pipe with fan in the bottom and stepper motor at the top with sliding ping pong ball in it. (pipe d=45mm, ball d=40mm 2.7g) Stepper controls ping pong high in the pipe. The device is working but mehanics is not my aria at all so...

Hi Can someone please confirm me on this one http://img822.imageshack.us/img822/9724/hydron.png 1. Is this picture correct? (The water level in the big tank and in the pipe will be the same) 2. Water level in big tank and pipe would be the same regardless of pipe size (red) Thanks

Homework Statement A heat pipe is a simple device which can be used to transfer heat over considerable distances using only small temperature differences. It consists of a sealed tube filled with an appropriate fluid. The dryness fraction of the fluid is usually about 0.1. If the tube is...

Hey so I am trying to calculate the following scenario. I have a chamber that must change in pressure at a certain amount of time. I need to find the volumetric flow rate coming out of the chamber. Here is the info I have P0=11psi, P1 = 6psi Change in time = .25s Fluid = air...

Two situations: * A pipe with high pressure fluid inside - stress determined by hoop stress. * A pipe with high pressure fluid outside Suppose the pressure differences are the same in each situation, which would have less stress? Or are they equal? My first thoughts are that if the...

I have a fluid dynamics homework question I could really use some help solving. "Consider a straight, circular pipe of inside radius R, through which flow an incompressible fluid. At the pipe entrance, the flow velocity Vo is uniform and parallel to the pipe centreline. The flow is affected...

kindly help me with this one. im trying to find out what is the effect if i increase the diameter of my header pipe in a water distribution line. i think pressure at the discharge pipe will decrease. if so, i don't know how to justify it. tnx in advans.

I have a problem and it consists on placing a square PVC pipe vertically in a trench and surrounding it in concrete, I would like to know how would I calculate the sufficient wall thickness of this pipe and the maximum depth of the trench etc before the pipe would yield to the surrounding...

Homework Statement I have nitrogen gas in a bottle compressed to about 150 bars. I want to know how many nitrogen will flow trough a pipe with diameter=6mm for the time of 1 sec if I open the bottle and allow to the nitrogen to exit with pressure 4 bars. pressure for the exiting nitrogen...

Force exerted on U-shaped pipe by steady air-flow... help please! :) Hello! I have attempted this problem, and my result makes sense in my twisted mind. However, it seems like it came too easy! Homework Statement Consider a length of pipe bent into a U-shape. The inside diameter of...

I've heard of using isopropyl alcohol to clean the tar out of a pipe, but what about acetone? Which is a better solvent for tar? Would a mixture of both work better than either alone? (Would mixing the two be dangerous?) Thanks, Tyler

I am to find the velocity distribution where there is non steady flow of a Newtonian fluid in a circular pipe. I did a mass and momentum balance around the system and ended up with the following equation: dp/ds = 4 + 1/e*d/de(e*dp/de) The derivatives in the equation are partial derivatives the...

Homework Statement Water flows through a horizontal 180 degrees pipe bend and ejects into the atmosphere. The pipe diameter changes from 150 mm at the entrance to 50 mm exit of the bend and the bend is attached with the main pipe by 4 bolts. If the flow rate is 60 litres/s, determine the...