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Thermal Diffusivity Calculator — result sheet
Calculate thermal diffusivity from thermal conductivity, density, and specific heat capacity.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Thermal diffusivity alpha = k/(rho cp); volumetric heat capacity = rho cp.
Thermal diffusivity compares a material's ability to conduct heat with its ability to store thermal energy per unit volume. A higher value generally means a temperature disturbance spreads faster under the stated constant-property model.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Thermal conductivity — W/(m·K); minimum 1.0E-6; maximum 1000000
- Material density — kg/m³; minimum 1.0E-6; maximum 100000000
- Specific heat capacity — J/(kg·K); minimum 1.0E-6; maximum 100000000
Worked example
| Input | Value |
|---|---|
| Thermal conductivity | 0.6 |
| Material density | 1000 |
| Specific heat capacity | 4186 |
Thermal diffusivity ≈ 1.433×10⁻⁷ m²/s = 0.1433 mm²/s.
Assumptions and limits
- Conductivity, density, and specific heat are positive and expressed in compatible SI units.
- The properties are treated as constant over the temperature interval.
- Convection, radiation, phase change, anisotropy, moisture, and temperature-dependent properties are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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