Environmental Engineering

Soil Vapor Extraction Air Flow Rate via Radius of Influence (Radial Darcy Flow) calculator

Soil Vapor Extraction Air Flow Rate via Radius of Influence (Radial Darcy Flow) engineering calculator.

Runnable This tool can run, but independent engineering verification has not been established.

Quick Answer

Calculate Soil Vapor Extraction Air Flow Rate via Radius of Influence (Radial Darcy Flow)

Calculator

Volumetric air flow rate (m³⁄s)
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Result Interpretation

Soil Vapor Extraction Air Flow Rate via Radius of Influence (Radial Darcy Flow) calculator computes Volumetric air flow rate in m^3/s using the defined engineering formula and the input values provided. Volumetric air flow rate is expressed in m^3/s. No universal acceptance threshold is defined by this calculator.

Worked Example

Verified calculation

Given:

  • Air permeability = 2.5E-11
  • Pressure difference between ambient and extraction well = 450
  • Radius of influence = 12
  • Extraction well radius = 0.1
  • Dynamic viscosity of air at site conditions = 1.81E-5

Expected Result:

  • Volumetric air flow rate = 0.0097887452008998

Engineering Interpretation:

Under the given input conditions, the calculated result is: Volumetric air flow rate = 0.0097887452008998 m^3/s.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from deterministically validated test cases.

Formula / Method

volumetric air flow rate = 2 * 3.14159265358979 * air permeability * pressure difference between ambient and extraction well * radius of influence / (dynamic viscosity of air at site conditions * log(radius of influence / extraction well radius))

Formula family: formula_environmental_soil_vapor_extraction_sve_air_flow_rate_calculator_radius_of_influence_method

Variables

SymbolLabelRoleDescription
air_permeability Air permeability INPUT Air permeability
pressure_difference Pressure difference between ambient and extraction well INPUT Pressure difference between ambient and extraction well
radius_of_influence Radius of influence INPUT Radius of influence
well_radius Extraction well radius INPUT Extraction well radius
air_viscosity Dynamic viscosity of air at site conditions INPUT Dynamic viscosity of air at site conditions
volumetric_air_flow_rate Volumetric air flow rate OUTPUT Volumetric air flow rate

Calculation Steps

  1. Enter the air permeability in m^2.
  2. Enter the pressure difference between ambient and extraction well in Pa.
  3. Enter the radius of influence in m.
  4. Enter the extraction well radius in m.
  5. Enter the dynamic viscosity of air at site conditions in Pa*s.
  6. Step 1: Compute volumetric air flow rate.
  7. Read the volumetric air flow rate (m^3/s) from the results.

Engineering Summary

Calculate Soil Vapor Extraction Air Flow Rate via Radius of Influence (Radial Darcy Flow)

Frequently Asked Questions

What does this calculator calculate?

The Soil Vapor Extraction Air Flow Rate via Radius of Influence (Radial Darcy Flow) calculator estimates Volumetric air flow rate based on the input parameters you provide

Why is air permeability important in this calculation?

air permeability is directly proportional to volumetric air flow rate. When you enter air permeability in m^2, the calculator uses it in the engineering formula to compute the output

How should I interpret the result volumetric air flow rate?

The calculator outputs volumetric air flow rate in m^3/s. To convert to liters per second, multiply by 1000. For liters per minute, multiply by 60000. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Air permeability (m^2), Pressure difference between ambient and extraction well (Pa), Radius of influence (m), Extraction well radius (m), Dynamic viscosity of air at site conditions (Pa*s). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

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