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THE FEUTEX TOOLKIT

Thermal Contact Interface Drop

Calculate temperature drops across two solids and their contact interface.

Thermal workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaΔTcontact=Q/(hcA); resistances add in series.
Sources and model references

Worked example

Inputs

Through heat flow
100 W
Contact area
0.01 m²
Contact conductance
1000 W/(m²·K)
Solid 1 thickness
0.01 m
Solid 1 conductivity
200 W/(m·K)
Solid 2 thickness
0.02 m
Solid 2 conductivity
50 W/(m·K)

Expected results

Contact temperature drop
10 K
Total temperature drop
14.5 K

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter every input in the labeled units; use measured or independently specified properties.
  2. Check the stated model assumptions before calculating.
  3. Interpret the output as a model estimate and verify it independently for the intended application.

Try this example

{
  "heat": 100,
  "area": 0.01,
  "contact": 1000,
  "l1": 0.01,
  "k1": 200,
  "l2": 0.02,
  "k2": 50
}

Accuracy and scope

Constant prescribed contact conductance; actual conductance depends on pressure, roughness and interstitial material. Educational engineering estimate only; not structural or safety certification, equipment selection, or operating recommendations.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.