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รายละเอียดของโปรแกรม
Purpose
of the program:
This
programs calculates the time dependent temperature distribution
in a layered structure as a function of time.
The
considered geometry is one-dimensional.
The
program is primarily written in view of the calculation of fires,
but is also suitable for use at much lower temperatures.
At
the left side of the first layer a prescribed heat source is
present during a certain time.
There
are THREE possibilities present for the input of the conditions
at the LEFT side:
1.
Input of the air temperature [°C]
2. Input of the incoming radiation [kW/m2]
3.
Combination of point 1. and 2.
At
point 1. next to air temperature the heat transition coefficient
has to be given [W/m2 °C]
For
point 2. the first layer is radiating somewhat backwards as a
consequence of the raise in temperature and therefore
lowering
the temperature somewhat (especially
at higher surface temperatures).
For
option 3. the amount of energy is put into the structure by
convection as well as radiation.
For
the input of air temperatures and radiation at the LEFT side
various more or less complex options are available.
At
the RIGHT side only a simple condition is possible; namely a
constant temperature with a heat transition coefficient.
In
the various layers heat transport takes place by convection only.
It
is possible, when water is present, to limit the temperatures to
a maximum of 100
degrees Celsius.
In
a possible cavity heat transport is only calculated by means of
radiation.
The
output of the calculations results is possible in numerical as
well as graphical form.
หมายเหตุ
:
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Development
Gerrit Wolsink
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