Embedded Files
Overview
Overview
To ensure your simulation meshes and runs properly, your vehicle's 3D CAD model must be split into multiple separate files based on specific Geometry Groups.
Contents of Page:
Core Requirements
Core Requirements
No Duplication: Keep parts isolated to a single file. Do not duplicate parts across multiple geometry groups.
Multiple Files Allowed: While a part should only exist in one group, each geometry group (e.g., Body) can have multiple files uploaded to it.
Orientation is Critical: Your vehicle must be aligned to the global coordinate system:
Front of vehicle: Points in the -X direction.
Right side of vehicle: Points in the +Y direction.
Top of vehicle: Points in the +Z direction.
Example Geometry
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
Geometry Groups
When you upload your parts, you must assign them to one of the following specific categories. A separate file needs to be created for each geometry type you intend to use.
Body
The outer shell of the vehicle and the driver (if applicable). Do not include the underfloor in this group. Any struts or mounts connecting wings to the chassis can also be included here.
Underfloor
The bottom surfaces of the vehicle, including the main underfloor and the diffuser.
Splitter
The front splitter geometry. Keep the underfloor and diffuer in the underfloor group.
Engine
Internal engine bay components, including the engine block, transmission, driver/cockpit internals, radiator frame, exhaust, and engine bay surfaces.
Note: If modeling flow within the engine bay, the bay surfaces must be double-layered (flow can only touch one side of each surface). If the engine bay is not closed off, the surfaces must be artificially thickened (we recommend 5-10 mm).
Radiator
Radiator and intercooler geometry, excluding the radiator/intercooler frame. Frame geometry goes with either body or engine group. Please see here for more information.
Front Wing
All 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. You can also rotate within your CAD program and reupload each wing.
Rear Wing
All rear 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. You can also rotate within your CAD program and reupload each wing.
Suspension
The vehicle's suspension system. Includes uprights, springs, rods, joints, bearings, suspensions arms, sway bars, and any part of the wheel assembly that does not rotate.
Wheel
The rotating wheel assemblies. You must upload four separate wheel files to start a simulation, split by position (Front-Left, Front-Right, Rear-Left, Rear-Right)
Please see here for more information.
Toint
The fluid volume defining the rotating reference frame for the primary wheel assembly, defined by an inboard and outboard plane. Separate files are needed for reach wheel position. (Front-Left, Front-Right, Rear-Left, Rear-Right)
Required Information: The inside point of the toint planes is required. This is defined as any point in between the inboard and outboard plane, but not inside any geometry.
Note: Toints (rotating reference frame) are not required to be included in the simulation
Plinths
The contact patches for your vehicle, seprated by position. (Front-Left, Front-Right, Rear-Left, Rear-Right)
Note: Plinths are only required and allowed if intending to use the Complex Ride Height Changer. For the Simple Ride Height Changer and, the App will automatically create plinths for your wheels.
WheelSub
Secondary wheel geometry that will have flow passing through it, such as brake rotors. Like the wheels, these must be separated by position. (Front-Left, Front-Right, Rear-Left, Rear-Right). This group is not required if you do not intend to have flow passing through secondary wheel geometry.
WheelSubToint
The fluid volume defining the rotating reference frame for the secondary wheel geometry, defined by an inboard and outboard plane. Separate files are needed for reach wheel position. (Front-Left, Front-Right, Rear-Left, Rear-Right)
Required Information: The inside point of the toint planes is required. This is defined as any point in between the inboard and outboard plane, but not inside any geometry.
Note: Toints (rotating reference frame) are not required to be included in the simulation
Report abuse