I created a new simulation project called 'External Aerodynamics investigation of a MotoGP motorbike':
External Aerodynamics investigation of a MotoGP motorbike
More of my public projects can be found here.
In this project the aerodynamic of a MotoGP is investigate.
A demo model was taken from https://grabcad.com/ (provided from user: Suren RK).
The aim of this work is to simulate an external aerodynamic case for a MotoGP bike at 180 km/h, including the modelling of the radiator (using porous media) and the exhaust gases (needed compressible solver).
In order to achieve a consistent simulation (especially to verify no substantial differences between incompressible and compressible approach) gradual steps were developed:
RUN_01: steady state incompressible solver, kOmegaSST turbulence model
RUN_02: steady state compressible solver, kOmegaSST turbulence model
RUN_03: steady state compressible solver, kOmegaSST turbulence model, porous model
RUN_04: steady state compressible solver, kOmegaSST turbulence model, porous model, exhaust.
The computational grid was created externally in OpenFoam, and consequently imported in SimScale Platform.
A coarse refinement mesh is used (number of cells: 3.7e+06).
All the setup and simulation jobs are performed within SimScale.
Monitoring of Residuals over Iterations, within SimScale
Monitoring of Force Coefficients over Iterations, within Simscale.
Simscale Post-processor was used for a first check of the computed fields.
For a complete and detailed pos-processing an external version of Paraview v4.4 was used.
In the following pictures the main features of the flow are shown:
Pressure coefficient distribution on surface
Iso-surface Ux = 0
Velocity distribution inside the radiator
Visualization of the temperature field, focus on exhaust gases.
Visualization of the velocity field, focus on exhaust gases.
Contribution to Drag Force