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06bc881 1b39983 06bc881 1b39983 06bc881 1b39983 06bc881 1b39983 06bc881 1b39983 06bc881 1b39983 06bc881 1b39983 06bc881 1b39983 06bc881 1b39983 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | import streamlit as st
# Hazen-Williams equation: hf = 10.67 * (L / C^1.85) * (Q^1.85 / d^4.8655)
def calculate_velocity(pipe_diameter, flow_rate):
# Convert pipe diameter from inches to feet
diameter_feet = pipe_diameter / 12
# Calculate the cross-sectional area of the pipe (A = π * r²)
radius_feet = diameter_feet / 2
area = 3.1416 * (radius_feet ** 2)
# Convert flow rate from gallons per minute (GPM) to cubic feet per second (CFS)
flow_cfs = flow_rate / 448.831
# Calculate velocity (V = Q / A)
if area > 0:
velocity = flow_cfs / area
return velocity
else:
return 0
def calculate_pressure_loss(pipe_diameter, flow_rate, pipe_length, c_value):
# Convert pipe diameter from inches to feet
diameter_feet = pipe_diameter / 12
# Convert flow rate from gallons per minute (GPM) to cubic feet per second (CFS)
flow_cfs = flow_rate / 448.831
# Apply Hazen-Williams equation
if diameter_feet > 0:
hf = 10.67 * (pipe_length / (c_value ** 1.85)) * ((flow_cfs ** 1.85) / (diameter_feet ** 4.8655))
return hf
else:
return 0
# Streamlit app
st.title("Pipe Velocity & Pressure Loss Calculator")
st.markdown("**A comprehensive tool to calculate pipe velocity and pressure loss using the Hazen-Williams equation.**")
st.header("Inputs")
# User inputs
pipe_diameter = st.number_input("Enter the pipe diameter (in inches):", min_value=0.0, step=0.1)
flow_rate = st.number_input("Enter the flow rate (in gallons per minute):", min_value=0.0, step=0.1)
pipe_length = st.number_input("Enter the pipe length (in feet):", min_value=0.0, step=1.0)
c_value = st.selectbox("Select the Hazen-Williams friction coefficient (C):", [100, 120, 130, 140, 150])
elevation_requirement = st.number_input("Enter the total elevation requirement (in feet):", min_value=0.0, step=1.0)
residual_pressure = st.number_input("Enter the residual pressure at the outlet (in psi):", min_value=0.0, step=0.1)
# Calculate button
if st.button("Calculate Results"):
if pipe_diameter > 0 and flow_rate > 0 and pipe_length > 0:
# Velocity calculation
velocity = calculate_velocity(pipe_diameter, flow_rate)
# Pressure loss calculation
pressure_loss = calculate_pressure_loss(pipe_diameter, flow_rate, pipe_length, c_value)
# Total pressure required (including elevation)
total_pressure_required = pressure_loss + (elevation_requirement / 2.31) + residual_pressure
# Display results
st.success(f"Velocity in the pipe: {velocity:.2f} ft/s")
st.success(f"Pressure loss due to friction: {pressure_loss:.2f} ft of water")
st.success(f"Total pressure required: {total_pressure_required:.2f} psi")
else:
st.error("Please enter valid positive values for all inputs.") |