Pipe Definition and 1000 Threads

Along a horizontal pipe I am getting a pressure drop of roughly 10-20 kPa every 20 metres in a 6.5" (OD) water pipe. This seems much to high and I am thinking the pipe may be stuffed and thus there is to much friction which is reducing the pressure of the water. Just wanted to get some other...

Homework Statement Water entering a house flows with a speed of 0.228 m/s through a pipe of 1.08 cm inside radius. What is the speed of the water at a point where the pipe tapers to a radius of 2.39 mm?Homework Equations Continuity equation: A1V1 = A2V2 Bernoulli's Principle: P1 + .5pv1^2 +...

Homework Statement Shown in the picture attachment. The Attempt at a Solution Hello! with this question I am just completely lost. I haven't the slightest clue how to get started. Anybody care to explain why the answer is D? (I've looked at the markscheme..)

This is NOT homework. The fan is a Crary Fan and the hose is Oregon PU used to distribute particles. I have tried a number of 'online' calculation sites but they return either conflicting results or 'infinite' values! Dear All I am trying to determine / estimate the expected air...

Hi, we are trying to make different pitches by cutting metal pipes at different frequincies to produce different pitches. We don't know how to determine the length at which we should cut the pipes. We want to play notes E, D, C, G to play mary had a little lamb. the outer diameter of the pipe is...

Hey, I was wondering of a way to increase water pressure in a pipeline when I think that to much water is being taken from the pipe. Thanks

A ball is released on the inside surface of a half-pipe. The left side of the pipe is rough, so that the ball rolls there without slipping. The right side of the pipe is coated with frictionless ice. If the ball is released from a height h on the left side, how high will it go on the right side...

I'm having problems with our pressure measurements on a pretty basic PVC water flow system. I drew up the general design in paint and attached it so you can have a visual of what I'm talking about. The second attachment is a picture of the actual pipe design. We're controlling the flow rate...

Hello! I am working on a project with a classmate. We have a bucket which represents the water supply and an extensible hose. The bucket is hanged with a rope somewhere high. Here's how it works: the water from the bucket goes down the hose, spins a fan and then gets out of this system. We are...

I am trying to predict pressure drop in a pipeline with a range of different materials. I have used a surface profilometer to measure the surface roughness of the different materials and I have values for various surface roughness variables - Ra Rz Rmax Rq Rm S Sm R3z Wt and a range of other...

Hi there, after hours of frustration I've given in and come for help! I hope this isn't too long of a question, I really would appreciate any help I can get. :) I'm trying to work out the flow rate of gas down a pipe. My setup is simply an air compressor with a pipe coming out of it, with a...

Homework Statement Water enters a pipe and goes through a bend with a contraction from 40mm to 25mm then into the atmosphere. What is the horizontal force required to hold the pipe in place? Homework Equations I have either been given the following or have calculated them using the standard...

If there is a leveled pipe that gets increasingly narrow, the fluid in it will gain speed/momentum, right? Can you use that extra speed to lift the water (create pressure)? What equations would describe this?

Homework Statement A tube is closed at one end by a piston which is slowly withdrawn as a tuning fork of frequency 512 Hz is sounded over it. What is the shortest length of pipe which will resonate with the fork? (Speed of sound is 340m/s) Homework Equations L=1/4λ f=v/(4L) The...

Can someone help me here i need to find the velocity through straight pipe with length 0.11meter and diameter 6mm and air flows through the pipe at a pressure of 3bar. Now i want to find the velocity of air through the outlet in m/s?

I need help! I was given the pressure and flow rate needed through a manifold and I need to find out if this is producing the require flow rate based on the inlet/outlet diameter and total length. I have been out of school for years and need help on this! thanks

Orifice problem I've been given a list of quantities Pipe before orifice head = 255mm Diameter = 31.75mm Pipe after orifice head = 230mm Diameter= 20mm Time for 10litres to fill in collection tank 67.09seconds Assuming g= 9.81 and density = 1000 from the experiment difference in...

Hello everyone, I am trying to model the flow of steam through a vertical cylinder. Ultimately I would like to find the surface temperature as a function of the length of the pipe. I am assuming the steam cools as it moves upward along the length of the pipe and it is a steady-state process...

I am currently trying to provide a mathematical model that describes the flow through a diverging square pipe. I am trying to simplyfy the navier stokes equations by usings assumptions but am unsure if my current progress is correct. The problem is as follows: Fluid enters a section of a...

Homework Statement In [1], problem 2.3 (ii), we are asked to show that for a pipe with circular cross section r = a and constant pressure gradient P = -dp/dz one has u_z = \frac{P}{4 \mu}\left( a^2 - r^2 \right) u_r = 0 u_\theta = 0 References: [1] D.J. Acheson. <em>Elementary fluid...

Homework Statement The second overtune for a pipe, open at both ends is 2000 Hz, the speed of the sound is 343 m/s. What is the length of the pipe?Homework Equations • λ = v/f The Attempt at a Solution λ = v/f = (340 m/s)/(2000 Hz) = 0.17 m don't know if this is correct. Thanks in advanced.

I need to Calculate the Skin Effect of water in a tube of X Diameter or Surface Area... The length of the Flow in the pipe would be 200 mm. I know that is short but it matters in this instance. The pressure of the water would be around 15 bar. I will post the flow rate through the pipe as soon...

I'm trying to do the concept of a turbosteamer that the bmw is workking on but I'm facing few problems : the flow rate of water will be 9 ml/s and of pressure 6 bars . based on htri xchanger program , the best design of my shell and tube heat xchanger will be of 22 cm diameter and 6.4 mm tube...

Im looking to create a program which models a tabletop water tunnel. One part of the system involves flow out of a tank through a pipe. So far I have used the assumption that the pressure in the pipe is the same as atmospheric but I feel this is wrong, and therefore my use of SQRT(2*g*height...

hello sir, I have completed my b.tech in mechanical engineering, and am looking forward to start my career in pipe stress analysis and piping design. I would be happy to receive your valuable suggestions regarding the industry, job opportunities in and abroad. thankyou, jaswanth

Homework Statement A pipe resonates at successive frequencies of 540 Hz, 450 Hz, and 350Hz. Is this an open or a closed pipe? Homework Equations L = (nλ)/2 or L = ((2n-1)/4)λ v = fλThe Attempt at a Solution The difference between the first two frequencies (540 & 450) is 90Hz, and the...

Homework Statement A mercury is filled to a U-pipe so that the total length of the mercury is h (no figure given on the question). If the mercury column of one leg of the pipe is pushed then released, the mercury will oscillate with small amplitude. The angular frequency is a...

Hi, how do i work this one out? The mass flow rate of a fluid flowing through a section of pipe with a diameter of 38mm at a flow velocity of 5ms-1 with a specific volume of 0.00109 m3/kg is? Thanks,

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...

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...