Pipe Definition and 1000 Threads

Homework Statement The fundamental frequency of an open organ pipe corresponds to the note middle C (f = 261.6 Hz on the chromatic musical scale). The third harmonic (f3) of another organ pipe that is closed at one end has the same frequency. Compare the lengths of these two pipes...

What I'm trying to figure out is the temperature vs. time of a aqueous nuclear reactor. I'm trying to cool 200kW of energy with metal pipes running through a working reactor. This is just a heat calc, I'm not actually building one. The reactor runs at 200kW, is liquid filled, and will be...

Hi Guys. I have an absurd problem and no idea to solve it. Please could you help me? \frac{u}{\hat u} = \left [ \frac{y}{R} \right ]^{1/n} = \left [1- \frac{r}{R} \right ]^{1/n} Suppose the turbulent flow velocity distribution in a pipe of Radius R can be described by the equation...

Hi there, my first post on this forum and I hope its in the right place ! My question is this, in an exisitng air-cooled motorcycle engine what is the viability of using heat pipe technology to cool exhaust gas temperature? Using heat pipes to remove heat from exhaust valve areas to external...

What would be the hydrostatic pressure near the top of a vertical pipe closed at the top and open on the bottom? Would you calculate the pressure density*gravity*depth measuring depth from the top of the pipe or from its opening at the bottom or the difference between the point of measurement...

Hi! I wish to design a heat pipe for high temperature (up to 1300 degree Celsius). What material can I use? What about aluminum powder? Thanks.

I need to analyse what's going on when a hexagon pipe is submerged in drying cement. The pipe is hollow with a thickness and is hexagon shape, where the hexagon is pointing up. It is submerged in standard cement, where the top point of the hexagon is about 100mm from the suface. I...

Homework Statement note the picture A small mass m1 slides in a completely frictionless spherical bowl. m1 starts at rest at height h = ½ R above the bottom of the bowl. When it reaches the bottom of the bowl it strikes a mass m2, where m2 = 3m1, in a completely elastic collision...

nuclear reactor question air and non condensible gasses being removed from the condenser and processed through a treatment skid through a pipe. steady state value flow rate at 77 deg f is 30 scfm fixed the refer vault and now the temp is 15 deg for the gas. what will be the flow rate...

A 55kg skateboarder wants to make it to the upper edge of a quarter pipe with a radius 3.0 m. What speed do they need at the the bottom? A.) 7.7 m/s B.) 9.1 m/s C.) 5.4 m/s If you could help me out with the correct formula to use, that would help!

Homework Statement An ideal fluid with the density of 0.85 x 103 flows at 7.0 m/s through a level pipe with a radius of 0.50 cm. The pressure in the fluid is 1.4 x 105 N/m3. This pipe connects to a second level pipe with radius of 1.5 cm. Find the speed of flow in the second pipe...

Homework Statement Oil flowing through a pipe, measured to be 135kPa 15m from the end and 88kPa discharging from the end. The diameter of the pipe is 1.5cm, the density of the oil is 876kg/m^3, and the dynamic viscosity is 0.24kg/m*s. Find flow rate for: a) horizontal b) inclined 8...

Here is a problem from a physics contest of two years ago. I've translated it from Persian but it might have some problems because of my lack of good English. Problem: Assume a water pipe is in the middle room and the water is going through it. How can we find out the direction of water without...

Homework Statement Saturated liquid H2O @ 500 kPa flows in a metal pipe, 5 cm inner diameter and k=40 W/m K, with wall thickness 3 mm @ a rate of 2 kg/s. The pipe is exposed to ambient gas @ 500 degrees C with h=100 W / squared K. The water is being boiled to come out as saturated vapor @...

I have a heat transfer question, I work in a plant and am doing a re-insulation project. If an unexposed steel steam pipe (k=47) of diameter 10 inches, maintains an internal temperature of 460F and is exposed to ambient air (70F) flowing at 5 mph across the pipe. Determine the heat loss per unit...

Does anyone have a solution for the heat transfer from a pipe into a solid. I am looking for the temperature in the solid based on radius and time and also the heat transfer based on time. The temperature in the pipe (surface of the solid) is constant. The solid has a constant lower temperature...

Given the mass flow, Cp, temp of the inlet streams of both hot and cold streams. As well as being given the inner pipe diametre of the double pipe heat exchanger. Also knowing the setting is at counterflow and that the overall heat transfer coefficient and that the temp difference between the...

I need to find the circulation for a flow in a pipe. I'm using the velocity in the angular direction (cylindrical coordinate system). Am I right in thinking that an ideal vortex is one where there is no vorticity? That would mean there is no circulation. It's strange, because the velocity is...

Hi. I'm trying to apply Newton's cooling equation (if relevent) to the following system. We produce plastic piping, extruded at about 200 'C and cooled via water sprays to 35 'C. We are trying to calculate how fast we can run the pipe through the cooling sprays. It's been a very long time since...

Hi, I have a problem with the momentum equation in fluid mecanics. Here is my probleme. I have a Y pipe which is horizontal. The inlet velocity is Va, section A, mass flow Qa, and pressure Pa. The pipe is deviding in two sections B and C. I know Vb,Vc section B and C, mass flow at B and C and...

Hi guys I am currently using Comsol to model a single rectangular channel, a typical one found in a fuel cell (with symmetry boundary). Dimension of the inlet and outlet area is of the order 10e-3 and the length of the pipe is 0.1 m. I am having difficulty getting the expected result. The...

I am attempting to build an intake setup for an engine I'm working on. I currently have a 3" diameter aluminum pipe on the throttle body that just curves off to the side. I would like to try and get some cooler air by routing it down into the bumper. I have access to 2.5" diameter piping. I was...

Homework Statement I'm looking for a formula that has velocity at a certain point in a pipe. I only have velocity and pipe diameter. The problem goes something like: A Tube with a 0.075 meter diameter has four drains equally spaced apart with a cap at the far end. Each of the four drain...

Hello there, Im trying to figure this assignment question and I have hit hurdle. Can someone please help with figuring out what the velocity and pipe diameter will be?? Question: In a plant 20m3(cubic)/h of water at 20 degrees C is to flow via gravity from a storage tank to another one...

Hello there, Im trying to figure this assignment question and I have hit hurdle. Can someone please help with figuring out what the velocity and pipe diameter will be?? Question: In a plant 20m3(cubic)/h of water at 20 degrees C is to flow via gravity from a storage tank to another one. the...

Hi, 20m straight length horizontal pipe (60 mm internal diameter), steam flows at rate 0.5 kg/s, at midpoint there is a valve in the line. inlet pressure to this section of line is 5 bar (gauge), pressure at end of line is 3 bar (gauge). mass quality of steam is 0.8 and 2 phase flow occurs in...

Homework Statement My question is about the method used for calculation. The problem reads: There is a steel pipe of uniform size and density at a length of 31 ft. It's weight is 81 lbs. It is hung from a concrete deck with five concrete hangers. Measuring from one end of the pipe, the...

I am not sure how to approach this problem. If you have a carbon steel pipe that is being heated on one end at a constant temperature of 1500C. Can you figure out how much distance in pipe will it require before it cools to 790C? The thermal conductivity of Carbon steel is 54 W/mk. Another...

I am doing research into an internal corrosion/erosion problem on a methanol pipework processing line. The pipe is made out of carbon steel and I am looking at replacing it with a duplex steel like Inconel 625 or HASTELLOY. Does anyone know how I could go about working out the costs involved so...

Please help I'm going round in circles! Water on tank 12m high, feeding pipe 200m long and 125mm diameter. Open end. Given friction factor of 0.008 for the pipe and total of 3.2K for various fittings. Asked to find water flow rate in Kg/s in the pipe. Been looking at this for ages...

Homework Statement Is there such experiment to detect pipe leakage using radiation? I have opted to use radio-isotopes conduct this experiment. Homework Equations None The Attempt at a Solution How do i go forward with designing this experiment, knowing that I can use...

Im not sure how to analyze this. I have a 8ft dia. pipe casing that I am submerging into the mud in 10 ft of water. the top is open. What i need to find is if the .25" wall thickness is sufficent to keep the casing from collapsing. I know i have about 624 psf at the bottom of the casing...

In the controversial and well misunderstood Bourdon gauge phenomenon, I found by experiments that a flat or oval shaped bourdon tube will increase in volume significantly as the tube straightens. I filled the gauge tube with water and moved the tube with my hands. As I straightened the tube...

Can sonic velocity be achieved in a short pipe with constant cross-section, assuming isentropic flow with no viscous effects being taken into account? Thank you.

I am building a closed loop watering system and need help determining the minimum size pipe I need for the return drain pipe. The system will pump water from a reservoir through spray nozzles into 4 containers at a rate of 300 gallons per hour. Each container will have a drain pipe in the bottom...

If a soft malleable metal pipe has a bend in it and is then pumped up with high internal static pressure, would this soft metal pipe seek to straighten out or would it simply remain in its bent shape due to pressure acting in many directions. I wonder if the most natural position of a pipe is...

I have a centrifugal pump that gives flow of 56 lit/min at 50 psi. Media: clear water, Temp. ambt The discharge pipe size: 1 1/2", Material: SS Total pipe length: 14 feet At 3 feet from pump discharge there is 90 degree bend and again at 6feet there is 90 degree bend. My question is what...

Homework Statement Water flowing through a 2.68 cm diameter pipe fill a 284 L bathtub in 8.2 minutes. What is the speed of the water in the pipe? Homework Equations p+pgh +1/2pv^2=p2 +pgh + 1/2pv2^2 The Attempt at a Solution I know that p=pat for both cases but the water does not...

Can anyone please help me with a question re the minimum size square steel pipe needed to bear a load. I loved physics but never took mechanical engineering. I am rigging a winch to one end of a pipe to lift a static load (holding up a gangway temporarily to repair). The gangway weighs around...

What equations would show the process of corrosion of a steel pipe that is carrying salt water and sand and also would the corrosion rate be different if at different rates of flow?

Homework Statement Water flows at 3.64 L/s through a horizontal pipe that narrows smoothly from 10.2 cm diameter to 4.89 cm diameter. A pressure gauge in the narrow section reads 47.0 kPa. What is the reading of a pressure gauge in the wide section? Homework Equations F=PA P1+...

Hi Guys I am trying to use a water filter in line with a 12V water pump rather than off the mains. The water filter requires 10psi minimum and a maximum of 125psi, I am using 15mm copper pipe and the pump is 800mm from the water filter. I have not yet decided on a pump yet as this is...

Could someone help me with this. In pipe flow show that the average velocity is half of the maximum velocity. I have it written in my notes that this is true, but not how to derive it.

Hi Firstly, this is not a homework problem. It's regarding some flow experimental results I have and to understand the results further I am trying to identify possible reasons for the patterns I see. I don't have expertise in thermodynamics hence finding the following problem a bit puzzling...

Dont know if this is the right forum but here goes In a pipe with a diameter 0.15 there is a smaller area with the diameter 0.075 imagine a pipe with one part twice as small then after the smaller part its the larger size agian point A 0.15 smaller part point B 0.075 The...

Hello, I am wondering how to determine the pressure drop due to fittings such as Tees and "Y's" when there are two flows coming in and one coming out. So for example there is a Tee where there are two flows coming in opposite directions (180 degrees from one another) and they combine and exit...

1. One closed organ pipe has a length of 2.40m. a. What is the frequency of the note played by this pipe? b. When a second pipe is played at the same time, a 1.40 Hz beat note is heard. By how much is the second pipe too long? 2. f = nv/2L (n = 1) change...

I suppose this is also related to thrust vectors. I have a Y pipe with two exit nozzles. These exit nozzles are angled 43.75 degrees from the vertical and are at a radius of .1968m from the vertical. These nozzles have a deflector that can move from 0 degrees (fully open), to 90 degrees...

I have a long, 24" diameter verticle pipe. There is a flow of gas through this pipe in which pure helium enters at the top and exits at the bottom where it exits to atmosphere. In this case, there must be a gradient of gasses with helium at the top and air at the bottom and a mixture between...

Hello, Is there anyone who kows how to calculate the force on a pipe clamp before it rotates or slips. Thank you very much...