Property Editor

The Property Editor shows all the properties of a selected object and enables you to edit them.

The Property Editor can be opened and closed in the following ways:

Click View > Property Editor from the menu bar
Press F3
Right-click on selected objects and choosing Properties/Hide Properties from the context menu

Properties that are not editable appear grayed out. Properties such as a name and color can be assigned to various objects, such as parts, or to an entire model. If multiple objects are selected, the values of properties which are the same for the selected objects are displayed in the Property Editor, and the values of properties which are not the same are left blank. If you change a value in the Property Editor, the new value is assigned to all selected objects.

Supported Properties

The properties assigned to an object vary based on the type of object.

General

Name: Object name. Objects can be renamed in the Model Browser or Property Editor, or by using the right-click context menu.
Identify As: Part type in terms of wind tunnel testing: body, heat exchanger in/out/wall, or wheel. This option is also set by means of the Identify Parts tool and the right-click context menu.
Baffle: Baffles are two dimensional surfaces that are surrounded by fluid on all sides but do not combine with other surfaces to form a fluid volume. They are used to represent thin regions of solid material that are too costly to explicitly resolve. This option is also set by means of the right-click context menu.
Scale: The scale factor of the part with respect to the original geometry that was imported into Virtual Wind Tunnel. This option is also set by means of the Scale tool.
Group (heat exchanger, wheels): Identifies which wheel or heat-exchanger group this part belongs to. You can select different groups from the drop-down list.

Appearance

Visible: Indicates whether the selected object is visible (shown or hidden) in the modeling window.
Color: Indicates the color assigned to the object when it is displayed in the modeling window.
Click to create and assign custom colors.
Transparency: Transparency of the selected object, according to a percentage. By default, objects are zero percent transparent.
Display Style: Indicates how parts and assemblies are displayed in the modeling window. In addition to the default smooth shading display style, each part can be displayed as mesh lines, or as smooth shading with mesh lines.

Inflow Velocity (Wind Tunnel Only)

Inflow speed: The velocity of air at the inlet to the wind tunnel. This velocity is also used as the wall velocity of belts and moving ground if activated.

Boundary Layer Suction (Wind Tunnel Only)

Active: Activates the modeling of a boundary layer suction upstream of the point at which the boundary layer begins to grow.
Location Reference: The reference location from which boundary layer suction distance is measured. This can be the origin or the wind tunnel's inflow.
Distance: The distance from the reference location at which the boundary layer suction is applied.

Tunnel Properties (Wind Tunnel Only)

Length: Total length of the wind tunnel, typically designated in meters.
Width: Total width of the wind tunnel, typically designated in meters.
Height: Total height of the wind tunnel, typically designated in meters.

Tunnel Extents (Wind Tunnel Only)

X Min, X Max, Y Min, Y Max, Z Min, Z Max: This value indicates the extension of the wind tunnel with respect to each coordinate axis.; This is different from the Length, Width and Height settings in that it can comprise positive and negative values. For example, a wind tunnel that is four meters wide across its Y axis, but centered on the coordinate origin, would have a Y Min of -2m and a Y Max of 2m.

Heat Exchanger Properties (Heat Exchangers Only)

Inertial Resistance

The inertial resistance coefficient (

) used to determine the pressure drop across the porous media per the following equation:

Where,

: Density
: Velocity
: Pressure
: Location coordinate

Viscous Resistance

The viscous resistance coefficient (

) used to determine the pressure drop across the porous media per the following equation:

Where,

: Density
: Velocity
: Pressure
: Location coordinate

Permeability Direction (Heat Exchanger Only)

Direction X,Y,Z: Defines the direction in which the permeability is applied.

Wheel RPM (Wheels Only)

Auto Calculate: Automatically calculate the angular velocity of the wheel based on the wind speed and location of wind tunnel ground plane.
Angular Velocity: Rate of rotation of the wheel.

Wheel Center (Wheels Only)

Wheel Center X, Wheel Center Y, Wheel Center Z: Location of the wheel's center in the global coordinate system. The default center is computed based on the oriented bounding box of the part.

Wheel Axis (Wheels Only)

Wheel Axis X, Wheel Axis Y, Wheel Axis Z: Wheel's axis of rotation in the global coordinate system. The default axis is computed based on the oriented bounding box of the part.

Fan Rpm (Fans Only)

RPM: Rate of rotation of the fan.

Fan Center (Fans Only)

Fan Center X, Fan Center Y, Fan Center Z: Location of the fan's center in the global coordinate system. The default center is computed based on the oriented bounding box of the part.

Fan Axis (Fans Only)

Fan Axis X, Fan Axis Y, Fan Axis Z: Fan's axis of rotation in the global coordinate system. The default axis is computed based on the oriented bounding box of the part.