3. Operands

3.1. Operand RIGI_THER

♦ RIGI_THER = rigi_ther

Thermal stiffness matrix corresponding to the potential of the fluid. It is built by combining the \(\rho {c}_{p}\) of the material assigned to the fluid model with the density of the fluid.

3.2. Operand CHAM_MATER

◊ CHAM_MATER = chmat

Name of the material field assigned to the model associated with the rigi_ther matrix.

3.3. Keyword factor EXCIT

3.3.1. Operand CHARGE

♦ CHARGE = ch

Thermal load corresponding to the boundary conditions on the fluid.

For example in the case of a POTENTIEL = « PRES » calculation:

TEMP_IMPO (TEMP =0.0) corresponds to zero pressure on this surface.

3.3.2. Operand FONCT_MULT

♦ FONC_MULT = fmult

Multiplicative function or formula that modulates loading

3.4. Operand POTENTIEL

♦ POTENTIEL =/'DEPL',

/”VITE”, /”PRES” [DEFAUT],

Choice of the type of potential desired, potential for movement, speed or a pressure field.

3.5. Operand DIST_REFE

◊ DIST_REFE = 1.E-2 [DEFAUT],

Reference distance to be entered when calculating on a generalized model. This distance is an absolute geometric criterion intended to copy structural displacement values into a thermal fluid model, in order to solve the Laplace equation of the unsteady pressure field. By default, it is equal to 10—2 m.

3.6. Operand MODE_MECA

♦ MODE_MECA = fashion

Modes on which fluid potential is calculated

3.6.1. Operand COEF_MULT

♦ COEF_MULT = 1.0 [DEFAUT],


Real coefficient allowing, possibly, to scale the potential result