Update app.py

app.py

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+import streamlit as st
+import math
+
+# Title and description
+st.title("Pipe Sizing Helper")
+st.write("This application helps you determine the recommended pipe diameter based on flow rate and velocity.")
+
+# Input fields for flow rate and velocity
+flow_rate = st.number_input("Enter the flow rate (in m³/s):", min_value=0.0, step=0.01, format="%.2f")
+velocity = st.number_input("Enter the permissible velocity (in m/s):", min_value=0.0, step=0.1, format="%.1f")
+
+# Calculate pipe diameter
+if st.button("Calculate Pipe Diameter"):
+    if flow_rate > 0 and velocity > 0:
+        # Formula: Diameter (D) = sqrt((4 * Q) / (π * V))
+        diameter = math.sqrt((4 * flow_rate) / (math.pi * velocity))
+        diameter_mm = diameter * 1000  # Convert to millimeters
+        st.success(f"The recommended pipe diameter is {diameter_mm:.2f} mm.")
+    else:
+        st.error("Please enter positive values for both flow rate and velocity.")