Examples
Examples
Try the starting example
- Saturated hydraulic conductivity (mm/hour)
- 10
- Wetting-front suction head (mm)
- 100
- Moisture deficit (fraction)
- 0.3
- Initial infiltrated depth at ponding (mm)
- 1
- Continuous ponding duration (hours)
- 2
- Cumulative infiltrated depth (mm)
- 49.102852
- Instantaneous infiltration capacity (mm/hour)
- 16.109625
Try another scenario
- Saturated hydraulic conductivity (mm/hour)
- 11
- Wetting-front suction head (mm)
- 100
- Moisture deficit (fraction)
- 0.3
- Initial infiltrated depth at ponding (mm)
- 1
- Continuous ponding duration (hours)
- 2
- Cumulative infiltrated depth (mm)
- 52.286651
- Instantaneous infiltration capacity (mm/hour)
- 17.311362
Calculation method
Calculation method
Cumulative infiltrated depth (mm)
Ponded Green-Ampt implicit equation ΔF−ψΔθ ln((F+ψΔθ)/(F0+ψΔθ))=KΔt; no finite rainfall-supply restriction.
Instantaneous infiltration capacity (mm/hour)
Ponded Green-Ampt implicit equation ΔF−ψΔθ ln((F+ψΔθ)/(F0+ψΔθ))=KΔt; no finite rainfall-supply restriction.
Symbols and units
- a
- Saturated hydraulic conductivity (mm/hour)
- b
- Wetting-front suction head (mm)
- c
- Moisture deficit (fraction)
- d
- Initial infiltrated depth at ponding (mm)
- e
- Continuous ponding duration (hours)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- User-supplied measurements and assumptions; Ponded Green-Ampt implicit equation ΔF−ψΔθ ln((F+ψΔθ)/(F0+ψΔθ))=KΔt; no finite rainfall-supply restriction. Supported limits: Finite numeric values bounded to 1e9 magnitude; lists and tables contain 1–100 records unless a stricter bound is stated. Inputs use the units shown. Lists explicitly paired by a method must have matching lengths; independent polynomial coefficient vectors may differ. Respect stated physical, interpolation, policy and computational domain limits.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
Background reading; this does not imply endorsement or independent review of SumFizz.