Gas Pipeline Hydraulics

Multi-Equation Hydraulic & Thermodynamic Engine

Mode:

Equation:

Equation Advisory (Heuristic Guidance): AGA Fully Turbulent

Assessing optimal equation based on pipeline geometry, wall roughness, and Reynolds number...

Geometry & Material

Nominal Pipe Size (NPS)

Pipe Material

Outside Diameter

Wall Thickness

Internal Diameter

Absolute Roughness

Pipe Section Length

Fluid Properties

Specific Gravity (γ)

Pipeline Efficiency (E)

Gas Viscosity (cP)

Auto (LGE Method)

Specific Heat Ratio (k)

Compressibility (Z)

Gross Calorific Value (GCV)

Auto (from γ)

Process Conditions Operating State

Flow Rate (Q)

Upstream Pres. (P1)

Downstream Pres. (P2)

Upstream Elev.

Downstream Elev.

Operating Temp

Base Temp

Base Pres. (Pb)

Atm. Pres. (Patm)

Diagnostics & Limits Flow Regime & Thresholds

Warning: Re < 4000 (Non-Turbulent / Transitional). Turbulent equations inaccurate.

DANGER: Gas velocity exceeds erosional velocity limit (API RP 14E). Risk of pipe wall erosion.

Caution: Velocity > 50% of sonic (Mach --). Noise & vibration risk.

Reynolds No. (Re)

Transmission Factor

Gas Velocity (Outlet / Max)

Gas Velocity (Average)

Sonic Velocity (Outlet)

Erosional Limit (Outlet)

Pressure Drop Gradient (ΔP/L)

Line Pack & Inventory Current Inventory

Standard Pack

-- MMSCF

Geom. Volume

m³ Water Cap.

Energy Pack

-- GCal

Gas Mass

Metric Tonnes

Hydraulic Profile & Grade Line (Distance vs. Pressure & Velocity) Non-Linear Gas Expansion Profile

Hydraulics Calculation Report