Index

Heat capacity

Ver: 0
 

DESCRIPTION

Modifies the heat capacity used in the energy equation for gas flow problems. Cp(T) is given as a power expression of the temperature T :
cp(T) = fact * (T/Tref)**expo
where fact, Tref and expo are parameters.

Default values : fact = 1, expo = 0, Tref = 300

  OPTIONS
 
-1
 Upper level menu
The current values are accepted
1
 Modification of fact
The current value of fact is modified
2
 Modification of expo
The current value of the power is modified
3
 Modification of Tref
The current value of the reference temperature is modified
NOTES Values of fact and Tref must be strictly positive.
For gas flow problems, the temperature has a strong influence upon the velocity field (by means bouyancy effects or by means of the temperature dependence of the viscosity).
Those non-linearities may require the use of an evolution scheme for reaching convergence.

The units for cp(T) and the four parameters a, b, c and d are :
 
Parameter
Mass
Length
Time
Temperature
    cp(T)
-
2
-2
-1
    fact
-
2
-2
-1
    expo
-
-
-
-
    Tref
-
-
-
Kelvin

SEE ALSO