The
Operating Conditions dialog box allows you to set parameters related to operating conditions in your model.
Controls
Pressure
contains items related to the modeling of pressure.
Floating Operating Pressure
specifies the use of a floating operating pressure. See Section
9.4.4 for details. This option appears only for time-dependent compressible flows.
Operating Pressure
sets the operating pressure for the problem. For all flows,
ANSYS FLUENT uses gauge pressure internally. Any time an absolute pressure is needed, it is generated by adding the operating pressure to the relative pressure. See Section
8.14 for a detailed description of operating pressure and how to set it.
Reference Pressure Location
sets the location of the cell whose pressure value is used to adjust the gauge pressure field for incompressible flows that do not involve any pressure boundaries. See Section
8.15 for details.
Gravity
contains inputs for gravitational acceleration, the Boussinesq model, and variable density.
Gravity
enables the specification of gravity.
Gravitational Acceleration
sets the
,
, and
components of the gravitational acceleration vector. (The
component is available only in 3D solvers.) See Section
13.2.4 for details about buoyancy-driven flows. This option appears only when
Gravity is enabled.
Boussinesq Parameters
contains inputs related to the Boussinesq model. This option appears only if
Energy (in the
Energy dialog box) and
Gravity are enabled. See Section
13.2.4 for more information on the Boussinesq model.
Operating Temperature
sets the operating temperature (
in Equation
13.2-2) for use with the Boussinesq approximation.
Variable-Density Parameters
contains inputs related to the modeling of variable density. This option appears only when
Gravity is enabled.
Specified Operating Density
enables the specification of operating density. See Section
13.2.4 for details.
Operating Density
sets the operating density (
in Equation
13.2-3). This parameter can be set only when
Specified Operating Density is enabled.