Fluid problems - pipe like questions

  • Thread starter Thread starter victorlee2
  • Start date Start date
  • Tags Tags
    Fluid Pipe
Click For Summary
SUMMARY

The discussion focuses on solving a fluid dynamics problem involving a fireman climbing an 8-meter ladder while carrying a hose with a 1.4-inch nozzle diameter. The absolute pressure from the pump is 4 atm, and the problem requires calculating the water velocity from the nozzle using Bernoulli's equation. Key parameters include the density of water (1000 kg/m³) and gravitational acceleration (9.8 m/s²). The participant attempted to apply Bernoulli's equation but encountered calculation errors, indicating a need for careful mathematical verification.

PREREQUISITES
  • Understanding of Bernoulli's equation
  • Knowledge of fluid dynamics principles
  • Ability to convert units (inches to meters, atm to Pascals)
  • Familiarity with flow rate calculations
NEXT STEPS
  • Review Bernoulli's equation applications in fluid mechanics
  • Practice unit conversion techniques for fluid dynamics problems
  • Explore the concept of volume flow rate in fluid systems
  • Learn about pressure measurement and conversion from atm to Pa
USEFUL FOR

Students studying fluid dynamics, engineers working with hydraulic systems, and anyone involved in practical applications of Bernoulli's equation in real-world scenarios.

victorlee2
Messages
21
Reaction score
0
Fluid problems - " pipe " like questions

Homework Statement


A fireman climbs a 8 m high ladder carrying a
5 in diameter hose that has a 1.4 in diameter
nozzle. The pump has an absolute pressure of
4 atm.
What is the water velocity from the nozzle?
Assume that water is incompressible, its den-
sity is 1000 kg/m3 , and 1 inch = 0.0254 m.
The acceleration of gravity is 9.8 m/s2 and 1
atm = 1.01 × 105 Pa.


Homework Equations


bernoulli's equation
volume rate of flow

The Attempt at a Solution


ok so first i found the area by converting and doing pie and all that stuff. so after i found A1 and A2, i put A2/A1 which is = to v2/v1 so that means v1 = A2/A1 * v2. with this said its time to plug into bernoulli's equation. P1 + 1/2pv1^2 = P2 + 1/2pv2^2 + pgh.

P1 = given, just convert atm into Pa
v1 i plugged into equation
p = 1000 since its water
P2 = atmopheric pressure I am guessing
h = 8m

i plugged everything in but i got it wrong T_T

i only have 3 other questions besides this one so ill post them as a reply later.
 
Physics news on Phys.org


Your method appears to be correct. It may be that you made an error in the math along the way. It you post the steps in your calculations, someone might be able to spot the error.
 

Similar threads

Fluid Mechanics Force Body Diagrams
  • · Replies 16 ·
Replies
16
Views
3K
Problem with Bernoulli calculation
  • · Replies 4 ·
Replies
4
Views
1K
Bernoulli vs real life experiment
  • · Replies 16 ·
Replies
16
Views
3K
Exit velocity of a gas through a hole
  • · Replies 3 ·
Replies
3
Views
9K
Pressure drop through volumes of compressible fluid
  • · Replies 1 ·
Replies
1
Views
2K
Bernoulli equation / fluid flow / finding height
  • · Replies 6 ·
Replies
6
Views
3K
Fluid mechanics: water jet impacting an inclined plane
  • · Replies 36 ·
2
Replies
36
Views
6K
Doublet flow in Fluid Dynamics between two spheres or cylinders
  • · Replies 0 ·
Replies
0
Views
2K
Pipe flow with precipitation at boundary
  • · Replies 1 ·
Replies
1
Views
2K
Calculate pump height by using the Bernoulli Equation
  • · Replies 15 ·
Replies
15
Views
3K