Pipe Definition and 1000 Threads

Please see attached. I'm pretty sure i did the problem right, but I'd like to check with the great minds of physicsforums. Summing up flow rates and inlet and outlet gives: 1500+1200=2700 gal/min 2700gal/min= area at exit *Velocity at exit 2700 gal/min * (1ft^3 / 7.48 gal) ( 1min / 60...

I need a formula! Please help! Imagine a 9' long 1"IDx1.25"OD pipe. Along the length of this pipe there are a couple hundred ∅1/16 holes. If I'm feeding 60PSI into the pipe, what is my air pressure coming out of the little holes? And how do I find out the CFM the pipe is consuming? Please help!

Homework Statement Two organ pipes, open at one end but closed at the other, are each 1.18 m long. One is now lengthened by 2.50 cm Homework Equations λ = nL/4 fn = nv/4L v = λF The Attempt at a Solution Here's what I tried First I tried finding the fundamental frequency...

What are some usefull softwares to use for pipe work design? Are there any softwares where you can select material? Can design to specific standards?

Came across this question in the Flying Circus of Physics, My initial assumption was that this would be where the water pressure becomes greater than the maximum pressure difference that can be created between the lungs and atmospheric pressure. a search revealed the normal pressure...

We have a design of stainless steel pipe with a bend radius of 1.5 The OD of the pipe is 47mm and the wall thickness is 3mm. Can anyone tell me if this is possible please? I am pretty sure the SS is austenitic. I thought that as a rule the minimum radius was 2. Thank you

Homework Statement Water pumped to a cooling plant through a 4km long cast iron pipeline. power available is 30kW. what pipe diameter is required to ensure a mass flow rate of 100kg/s. Homework Equations The Attempt at a Solution I know you have to guess a value and find it...

Homework Statement air flows in a 4" pipe. at point A a 2[bar] pressure was measured and the temperature was 22°C. the velocity V1was 5[m/sec]. At point B, down the stream, a 1.2[bar] pressure was measured and the temperature was 32°C. What is the velocity V2at point B. Homework Equations...

Dear all, Welcome to this post. I have a question. I have a main piping loop around a cylindrical vessel for which stress analsysis is don't and supported properly. Additonal six loops are to be installed in that main loop. This additional weight is coming on the main piping loop. The...

Ice as pipe insulation? OK so this is a problem me and some co-workers have been discussing. We have refrigeration pipelines that are about 15°F. It is very hot and humid here (assume about 90°F and 75% humidity) so condensation often forms on the pipes and freezes. Thinking of it as a pure...

Trying to understand what will happen to the fluid in the following scenario. Lets say there is a length of pipe with an OD of 4", what would happen if halfway along the pipe the pipe OD increased to 6" (gradual increase). I believe the pressure of the fluid will decrease, would the flow...

Can someone explain to me why a thicker pipe would have a higher pressure than that of a thinner pipe with the same mass flow rate? Surely the thinner pipe would have a higher pressure?

Hi, i need to calculate air flow true a pipe of 8mm in diameter @ 15 psi pressure, any help? I have a main pipe of 50mm with 7 outlets of 8mm every 300mm and i need to find the air flow to buy the correct blower.

What equation(s) do I use to calculate the weight necessary to crush a pipe lying horizontally on the ground and the point at which the initial deformation occurs. What is the name of this property? I'd like to compare my findings with a manufacturer's specs. I have a 3000 lb weight resting...

I am making a dust cleaning system for induction furnaces in my steel mill and for that I have to design a mechanism with which about 7m length of 16inch diameter pipe can rotate about an elbow attached to one end but wihtout any leakages. ANY HELP would be appreciated.

I am looking for copper fins the same as would be on a heating pipe. the fins need to be like a coil or slinky. If you have ever used or know who makes them please let me know. I am working on an invention and this is one of the parts i need. 2 to 3" OD and 3/4 to 1" ID

dear friends i have an application for pumping system it consists of 3 parallel pumps having a max head of 8 bars i have a stainless steel pipe has 8" diameter and sch 10 will this be suitable to be used under this pressure ?

Hi, I am not very strong in maths, so sorry if these sounds simple. If I have a 3D geometry of a pipe which has its surface defined by triangles (such as that in Computational Fluid Dynamics or Finite Element Analysis) and I have the coordinate points for all the triangles, how can I...

Hi all, hope i can get some opinions here on a topic discussed at work. Flow is exiting a pipe from a chamber at P_in to outside/atmospheric with pressure patm, at say low mach number 0.05. At the exact exit plane of the pipe, is the total pressure equal to the patm, or will it instead be...

I want to know when a pipe will burst i have attached a img wear the out side of the pipe has 1000 psi around it the inside should be let's say 25 pounds higher, does this mean i am putting 25 psi on it or 1025 psi. thanks for yalls help

I want to know how much a piece of pipe would weigh if I ran it down into a cylinder that was closed off at both ends except for a place to run the pipe through and a port to pump compressed air at the top. The cylinder would have water in it and I would apply air pressure through the top to...

Homework Statement First, there's a slender rod with length L that has a mass per unit length that varies with distance from the left end, where x=0, according to dm/dx = yx where y has units of kg/m^2. (a) Calculate the total mass of the rod in terms of y and L (Which I've already done and...

Hi all, I have a question regarding the mass flow rate of air through a pipe. On paper, it looks like temperature and pressure effect the mass flow rate but I can't rationalize it in my head. Here's what I got: Goal: Calculate the actual mass flow rate of let's say, CH4 through a...

Hello, I’ve seen a few posts regarding this topic but I can’t seem to grasp the concept of it. I have a main steel pipe x diameter providing 100psi of air to 6 smaller lines attached to it. At the end of these lines are valves. Is there a way to calculate the drop in pressure if I opened up 1...

My physics book explains that this is because of the conservation of charge and the fact that charge doesn't accumulate at a certain point. Can someone please explain this in detail, especially the part where it says that charge can't accumulate. Another question which i think is similar is...

I want to use a length of steel pipe as a communication medium. The pipe is about 20 feet long and the idea is to send some sort of signal along it that can be detected at the far end. I've had various ideas including using acoustic signals, or using the steel as an electrical conductor but I...

Hey all, I'd need help with determining the pressure loss over an orifice in a pipe. I have an equation for the friction factor so no problem there, and I know the Reynold's number as well. What confuses me is choosing the suitable velocity for the pressure drop equation; \frac{Δp}{ΔL} =...

Homework Statement Hi, my first post here! I have a Thermodynamics resit over the summer and I'm trying to get my head around viscous flow, I'm stuck at a question and need help! Thanks :) Glycerine discharges to the atmosphere through a circular pipe 100mm in diameter. The gauge pressure 50m...

[b]1. Here is what I am trying to solve. I am not looking for a direct answer, I just need help solving the problem. I am a mechanical EIT working for a clean energy company. My boss (P Eng.) and I are trying to solve this problem but can't quite grasp the concept. OK so, we have a...

Hi all, I am trying to calculate the friction losses found in a suction inlet pipe for a fire pump. I have attached an image which shows the pipe we are intending to use, but have no idea how to calculate the expected friction losses we would find when using it. I know how to calculate for...

Hello everyone! Chemistry is my hobby and I want to try a new method of synthesizing some compounds. It requires a use of a pipe bomb filled up to 3/4 of it's volume with an aqueous solution of reagents and heated to about 300 C. I'm a bit scared thou. Can a 1" steel pipe, about 2mm thick and...

A PUMP OF 0.25HP IS CONNECTED IN THE ABOVE FASHION (REF ATTACHMENT) TO THREE TANKS BY MEANS OF A SINGLE SUCTION PIPE. THE SINGLE SUCTION PIPE IS FURTHER BRANCHED TO THREE SUCTION PIPES, ONE EACH FOR THREE TANKS. THE DESIGN DISCHARGE CAPACITY OF THE PUMP IS APPROXIMATELY 45 LIT/MIN. BUT...

Let's say I have a simple parallel flow problem as shown in the attachment. The flow is pressurized and the downstream of the return goes back to a piping system that is negligible. It does not vent to atmosphere. I've tried reading up on the subject, but I got stuck at a certain point. At...

Hey guys, Hope you can help me with the following practical problem I am facing right now. I plan to build a pipe system in which ethanol (vapor/liquid) is being conducted at pressures from 1 atm to 10^(-2) atm. What would the minimum pipe wall thickness be if the pipe material was a)...

Homework Statement comparison nylon and pvc pipe which one vibration level is higher ? depend on which material properties ? Homework Equations The Attempt at a Solution

Homework Statement Frictionless, inviscous flow in a circular pipe. Velocity profile, v(r) = 6 - 6r^{1.828} Volume flowrate, Q = 9 \frac{\text{m}^3}{\text{s}} Pipe radius, R = 1 m Given velocities, v(0) = 6 m/s, v(R) = 0 m/s. Find mean velocity v_{av} 2. The attempt at a solution...

Homework Statement A) A tank of water of cross-sectional area A empties through a pipe of cross-sectional area a, where a A so that the speed of the water flow in the tank can be neglected compared to that in the pipe. The initial height of the water in the tank is H and the pipe extends a...

Homework Statement Describe the energy changes that occur in the system shown below (The picture shows a water reservoir at the top of the diagram and then some pipes that leads to a hose and you can see the water coming out of the hose in an arc and hitting the ground.) as the water travels...

Homework Statement I require the a means to theoretically calculate the spring constant of a hollow tube. Essentially, I need to find the diameter of the glass pipette which will have a spring constant of 100 Newtons/metre. If someone could point me towards relevant information on...

I am trying to do a pipe flow question but I am having trouble understanding how they have calculated the k values. Example question 1.1 attached & appendix A1 attached. We have to use appendix A1 to find the k values. I have tried using interpolation to get the k values from the example...

Homework Statement Fig. 1 shows the cross-section of an infinitely long conducting pipe. The inner radius of the pipe is r = R1, and the outer radius is r = R2. Suppose the inner surface has a constant voltage V = Vc > 0, and the outer surface has a constant voltage V = 0. The voltage...

If rope is wrapped around a pipe and two men are lifting it up why is it easier to lift when the rope is loose around the pipe (A) and harder when the rope is tied tightly to the pipe in a knot at both ends (B) ? I presumed this was because on A the weight is less concentrated?

Homework Statement If water flows through a pipe at 0.8m/s , how many litres will flow through the pipe in 1 hour? I think I may be greatly overthinking this question, I keep thinking I need to take into the account of the trench length which is 500m, and the pipe size which is 0.5m...

I have this idea about creating a 10 meter plastic/metal pipe that would go from a house roof to the ground and having a "U' shape close to the ground so that both holes are directed at the sky. Does anyone have a clue if the difference in atmospheirc pressure between both holes (10 meters...

Fluid Dynamics Question: I have a 1.5" pipe that has water pumped through it. The pipe is immediately split by a manifold into 5 separate 0.75" pipes after exiting the pump. Each 0.75" pipe runs to an outlet at varying lengths from the manifold (15", 37", 52", 89", and 126"). I want to know...

Trying to determine what happens when a pipe of splits off into two pipes which all have the same diameter. If the flow in the two pipes are the same and everyting else is the same. Then is the pressure in pipe 1 equal to P2 + P3 or is it P1=P2=P3. Searched around and haven't been able to...

Homework Statement What length of open pipe is needed to give resonance to a 384 Hz sound? Assume the speed of sound to 343 m/s. Homework Equations f=\frac{nv}{2l} The Attempt at a Solution I am lost as to how to even start this problem.

I have a tank filled with water on the top of a pipe (height of water = h) there's a hole in the bottom of the tank, so that when the hole is suddenly opened, water will flow in the pipe of length 20 meters at the bottom of the pipe, there's a nozzle (I don't know how to choose the right...

Dear Members, I am trying to calculate how quickly hot air cools in a stainless steel pipe. The details are as follows: • a stainless steel pipe conducts hot air with temperature at the top end of the pipe of 85oC (185F). • the pipe is 10m long and passes through 5m of ambient air with...

If you were to mate a 1 ½” black iron pipe to a 1 ¼” black iron pipe using a 1 ½” coupling and a bushing reducer, how much bending torque would be needed before one of the parts or connections failed? That is, if you held the 1 ½” black iron pipe in a fixed position and the applied a force to...