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Unexpected unit of input. :Function- exp
Posted Feb 19, 2019, 8:52 a.m. EST General, Heat Transfer, Parameters, Variables, & Functions Version 5.4 2 Replies
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I am trying to add an equatiom ii definition node under variable section. It turns yellow showing error message as: **Unexpected unit of input - Function: exp***
Why it is so? What is the mistake in input, can anyone tell? Screenshot attached for reference. Please help.
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Hi,
The exponential function exp expects a dimensionless input. I'm not sure what T is, but it might be a temperature, which makes the input to the function dimensionally inconsistent. If the numerator is a temperature, enter it as 9459[K], or else you can "dedimensionalize" the denominator as, for example, T[1/K].
Best regards, Magnus Ringh, COMSOL
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Yes, T is temperature. Thanks this worked. This equation is antonie equation. Is there any unit for these constant a, b in antonie eqn to make this equation dimensionally consisitent? as these equation solves for pressure.