Geometry
Geometry Requirements
The geometry should be split over multiple files. A separate file needs to be created for each of these geometry types and include only the appropriate parts for that category. Keep parts isolated to single files and not duplicated across multiple geometry groups. However, each upload group can have multiple files.
Geometry Orientation
Please be sure the front of the vehicle is pointing in the -X direction, right hand side in the +Y direction and the top in the +Z direction.
Example Geometry
Here is a geometry example with part breakdown that could be submitted to the app.
Common types of geometry can be seen such as the underfloor, wheels, rotating reference frames (rrf), rear and front wings, body, and suspension. The engine should be grouped with the chassis and radiator frame geometry should be included with the body.
Geometry Groups
Your geometry will need to be separated and uploaded in the following groups:
Body
The "Body" is categorized as the outer shell of the vehicle. This could include but not limited to the body of the vehicle and the driver. The underfloor of the vehicle should not be included with the 'body' group.
Engine
The "Engine" will include all parts associated with the interior of the engine bay including the engine, transmission, driver, cockpit, radiator frame, exhaust and the engine bay surfaces.
Note: If flow is being modeled within the engine bay, the engine bay surfaces will need to be double layered. In other words, flow can only be touching one side of each surface. If the engine bay is not closed off, then the engine bay need to be thickened. We typically recommend 5-10 mm for thickness.
Front Wing
This will include any front wing geometry. Any structs or parts connecting the front wing to the body can be uploaded with the body group.
Required Information: Two points defining the axis of rotation. If you do not plan to rotate the wing within the App, you can enter arbitrary numbers for the axis points.
WheelSub
WheelSub will include any secondary wheel geometry that will have flow passing through it. This could include the rotor if you want to
Note: Any geometry uploaded in this category will need to be separated by position (fr-lhs, fr-rhs, rr-lhs, rr-rhs).
WheelSubToint
This will include any rotating reference frame for the WheelSub part. An upstream and downstream plane will define the rotating reference frame. A separate set of toint planes will be required for each separated by position (fr-lhs, fr-rhs, rr-lhs, rr-rhs).
Required Information: The inside point of the toint planes is required. This is defined as any point in between the upstream and downstream plane.
Plinths
This will include any of the contact patches for your vehicle. A separate file is required for each position (fr-lhs, fr-rhs, rr-lhs, rr-rhs).
Note: Plinths are only required and allowed if intending to use the Complex Ride Height Changer. For the Simple Ride Height Changer and non Ride Height Changer simulations, the App will automatically create plinths for your wheels.
Radiator
This will include any of the radiator and intercooler geometry, but not including the radiator frame. Please see here for more information.
Rear Wing
This will include any rear wing geometry. Any structs or parts connecting the rear wing to the body can be uploaded with the body group.
Required Information: Two points defining the axis of rotation. If you do not plan to rotate the wing within the App, you can enter arbitrary numbers for the axis points.
Suspension
This will include any of the suspension system of the vehicle. Any uprights, springs, rods, joints, bearings and suspension arm will be included in this group. Any part of the wheel assembly that has no rotation can be included in this group.
Toint
This is the rotating reference frame for the wheel assembly. An upstream and downstream plane will define the rotating reference frame. A separate set of toints will need to be uploaded for each position (fr-lhs, fr-rhs, rr-lhs, rr-rhs).
Required Information: The inside point of the toint planes is required. This is defined as any point in between the upstream and downstream plane.
Note: Toints (rotating reference frame) are not required to be included in the simulation
Underfloor
This will include any of the bottom of the vehicle including the underfloor and the diffuser. The splitter is not included in this group.
Splitter
This will include the splitter of the vehicle. The underfloor and the diffuser is not included in this group.
Wheel
This upload group will include any of the rotating wheel assembly. The 4 wheel assemblies will need to be uploaded separately (fr-lhs, fr-rhs, rr-lhs, rr-rhs).
Please see here for more information. Four separate wheel files are required to start a simulation.