Heisler Calculator

Heisler Calculator is a professional quality evaluation tool that quickly calculates internal temperatures for transient heat conduction through a 1-D plane wall of thickness 2*L. No more Heisler Charts! Heisler Calculator provides an accurate numerical solution, eliminating the need for tedious graphical results from Heisler charts.

Heisler Calculator allows inputs in either SI (metric) units, or I-P (English) units, and converts from one to the other.

This powerful iPhone™ / iPod touch™ / iPad™ tool accepts the following user inputs:

•  x (the spatial location in the plane wall, measured from the centerline)

•  L (2L is the wall thickness)

•  t (the elapsed time since the step change in surroundings temperature)

•  h (the convective heat transfer coefficient)

•  k (the thermal conductivity  of the wall material)

•  α (the thermal diffusivity of the wall material)

•  Ti (the initial uniform temperature of the wall)

•  T∞ (the constant surroundings temperature far from the wall)

Heisler Calculator Outputs:

•  x* (dimensionless distance from the center)

•  Fo (the Fourier Number, dimensionless time)

•  Bi (the Biot Number, dimensionless convective heat transfer coefficient)

•  θ* (dimensionless Temperature, =(T-T∞)/(Ti-T∞))

•  T (temperature at x at time t)

Limitations:

•  the wall is initially at uniform temperature

•  the temperature of the surroundings and the convective heat transfer coefficient are constant and uniform

•  no heat generation inside the wall

•  the Fourier number (αt/(L^2)) must be > 0.0001

•  the wall and surroundings are symmetric around the wall centerline

SUPPORT:

For questions, comments and support requests, please contact us:

HeislerCalc ( at ) BluMtnWerx.com

Or DM us on Twitter:  http://twitter.com/BluMtnWerx

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