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🧮 Overview
📝 Inputs
- Pipe Diameter: mm, inches
- Wall Thickness: mm, inches
- Fluid Velocity: m/s, ft/s
- Fluid Density: kg/m³, lb/ft³
- Sand Content: mg/L, ppm
- Flow Regime: Single Phase / Multiphase (multiphase uses 2x multiplier on erosion)
- Design Code: API RP 14E, DNVGL-RP-O501, ISO 13703
- Output Velocity Unit: m/s, ft/s
📊 Calculation Logic
- Velocity Limit: Per code (e.g., API RP 14E: V=1.07/ρ/1000V = 1.07/\sqrt{\rho/1000}V=1.07/ρ/1000)
- Erosion Rate Calculation: ER=C⋅(WD)n⋅VmER = C \cdot \left(\frac{W}{D}\right)^n \cdot V^mER=C⋅(DW)n⋅Vm
- ERERER: Erosion rate (mm/year)
- C=1.0C = 1.0C=1.0, n=1.0n = 1.0n=1.0, m=2.6m = 2.6m=2.6 (API 14E)
- WWW: Sand content (mg/L)
- DDD: Diameter (mm)
- VVV: Velocity (m/s)
- For multiphase, erosion rate is doubled.
📤 Outputs
- ✅/⚠️ Pass/fail status (icon)
- Allowable velocity (selected unit)
- User velocity (selected unit)
- Calculated erosion rate (mm/year)
- Sand content, diameter, wall thickness, and regime summary
- Acceptance rule (per code and erosion rate limit)