X-Factor
Introduction
The X-Factor panel allows the user to define calibration factors to tune the thermal modeling on specific resistances. The adjustment factors set in this panel are considered in the results shown in Cooling subset, External panel environment, and the TEST environment.
The X-Factor panel also contains a set of parameters driving the external cooling (external air temperature, coolant temperature and rotor speed), allowing the user to evaluate the embedded thermal model.
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| 1 | Table of the calibration factors allowing the user to tune the part of the thermal modelling devoted to the exchanges between the frame on one side and the coolant / external air on the other. |
| 2 | Machine maximum speed. It is the maximum rotation speed for which the forced convection is evaluated in the external cooling datasheet. |
| 3 | Cooling circuit temperature. It is the temperature used in the external cooling panel to evaluate the convection occurring in the cooling circuit. All the results shown for the cooling circuit in the external cooling panel and datasheet use this temperature as the temperature of the coolant all along the circuit. This parameter only exists when a cooling circuit
has been defined by the user in the Machine subset, Housing
panel and Circuit setting. Note: This
temperature is only used for the model evaluation in the
external cooling panel. This temperature does not affect the
test computations, where the cooling circuit coolant inlet
temperature is defined in the settings of the
test. |
| 4 | External fluid temperature. It is the temperature used in the external cooling panel to evaluate the convection and the radiation occurring on the external surfaces of the frame and of the end caps. All the results shown for frame and end caps cooling in the external cooling panel used this temperature as the temperature of the external fluid at infinity. The
curves and maps are plotted for a temperature of the frame going
from this reference temperature to 150 Kelvin above this
reference temperature. Note: This
temperature is only used for the model evaluation in the
external cooling panel. This temperature does not affect the
test computations, where the external fluid temperature is
defined in the settings of the test. |
Calibration factors
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| 1 | Frame-cooling circuit resistance. This calibration factor is applied to the thermal resistance linking the frame and its cooling circuit. This X-factor exists only when a cooling circuit is defined by the user in the Machine subset, Housing panel and Circuit setting. |
| 2 | Frame-external fluid resistance. This calibration factor is
applied to every resistance linking the frame and the external
fluid:
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