Fluid Dynamics: Finding Speed in Venturi Tube

AI Thread Summary
The discussion revolves around solving a fluid dynamics problem involving a Venturi tube to find the fluid speed at one end of the tube. Given the pressure difference of 18.2 Pa and a cross-sectional area ratio of 0.478, Bernoulli's equation is applied to relate the velocities and pressures. The user attempts to manipulate the equation but struggles to find the correct fluid speed, expressing frustration over the time spent on the problem. The key equations involve the relationship between pressure, velocity, and area in the context of incompressible flow. Assistance is requested urgently due to an impending homework deadline.
victorlee2
Messages
21
Reaction score
0

Homework Statement


The horizontal constricted pipe illustrated in
lee (vl3765) – UTHW#34-Dluid Dynamics1 – hamaguchi – (32001) 3
the figure (a Venturi tube), can be used to
measure flow velocities in an incompressible
fluid.
The ratio for the cross section areas of the
tube is A2/A1 = 0.478, the difference in the
pressures is P1 −P2 = dP = 18.2 Pa , and the
density of the fluid is 1.08 kg/m3.
Find the speed of the fluid near the right
hand end of the tube (i.e., find v2).


Homework Equations


Bernoulli's equation

The Attempt at a Solution


alright so i wrote out the bernoulli's equation P1 + 1/2rov1^2 + rogh1 = P2 + 1/2rov2^2 + rogh2

so they told us that P1-_2 = 18.2 so i moved P2 to the other side, thus making it 18.2. then since A2/A1 = .478 that means v1/v2 = .478 as well. doing that i found out that v1 = v2*.478. so i just plugged all these founds into the equation. also since height is = 0m, both sides with the h's are crossed out leaving P1 + 1/2 rov1^2 = P2 + 1/2rov2^2. i cannot get the answer and this homework is due in 1/2 an hr. I've been working on this for 4 hours straight no joke. PLEASE HELP
 
Physics news on Phys.org
forget it.
 
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Pressure drop through volumes of compressible fluid
Replies
1
Views
1K
Bernoulli equation / fluid flow / finding height
Replies
6
Views
3K
Bernoulli equation and negative pressure
Replies
3
Views
3K
Is Bernoulli's Equation Applicable for Finding Pressure in Hydraulics Problems?
Replies
7
Views
2K
Fluid Mechanics-Bernoulli and Energy Equations
Replies
1
Views
3K
Understanding the Venturi Effect: Solving Equations for Ideal Liquid Flow
Replies
2
Views
2K
Fluid Dynamics: Calculating Speed and Force in Syringe Experiments"
Replies
2
Views
4K
Fluid Mechanics Force Body Diagrams
Replies
16
Views
3K
What are the air speeds in a Venturi meter with varying tube diameters?
Replies
2
Views
8K
Doublet flow in Fluid Dynamics between two spheres or cylinders
Replies
0
Views
1K

Hot Threads

Recent Insights

Back
Top