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Excel in ME

Excel in ME. 1-D Transient Heat Conduction Add-in. Loading an Add-in. Download Heat Transfer.xla from www.me.ua.edu/excelinme Possible to open as a file It runs slower Need to set Tools→Macros →Security to Medium or Low Load as an Add-in Faster No security problems. Loading an Add-in.

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Excel in ME

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  1. Excel in ME 1-D Transient Heat Conduction Add-in

  2. Loading an Add-in • Download Heat Transfer.xla from www.me.ua.edu/excelinme • Possible to open as a file • It runs slower • Need to set Tools→Macros →Security to Medium or Low • Load as an Add-in • Faster • No security problems

  3. Loading an Add-in • Click Browse button to find and load Heat Transfer.xla

  4. Functions • Functions return the dimensionless temperature, q* • Tslab(xstar, Fo, Bi) • Tcyl(rstar, Fo, Bi) • Tsph(rstar, Fo, Bi) • Function Wizard – User Defined

  5. R r x x L L Inputs • Dimensionless length, rstar or xstar • rstar = r / R • xstar = x / L • Fourier Number - Fo = at / L2 • Biot Number - Bi = hL / k L = R

  6. x Semi-Infinite Solid • TsemiInf(BCtype, x, alpha, t, k, BC) • BCtype - Boundary condition type • 1 - Constant Surface Temperature, returns • 2 - Constant Surface Heat Flux, returns • 3 - Surface Convection, returns • x - distance from surface • alpha - a = k / rc [m2/s] • t - time • k - conduction coefficient [W/m-K] • Only necessary for BCtype 2 & 3 • BC - Boundary condition value • Only necessary for BCtype 2 & 3 • BCtype 2 - BC = q"0, surface heat flux [W/m2] • BCtype 3 - BC = h, convection coefficient [W/m2-K]

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