Aerodynamic performance prediction using a novel approach ofAnsys Mosaic mesh & revolutionary GEKO turbulence model, andapplication of Adjoint Solver for aerodynamic Optimisation of acar Ansys Software Pvt, Limited

Format:

Book

Conference/Event

Author/Creator:

Patil, Tushar, author.

Contributor:

Patil, Vivek

Conference Name:

Symposium on International Automotive Technology (2021-09-29 : Pune, India)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

In the present scenario, wherein the cost of transportation iscontinuously increasing, achieving optimum fuel efficiency is keyarea of focus for many Automotive OEMs. Aerodynamic drag isprominent form of resistance any vehicle encounters while it is inmotion, and this particularly increases at higher speeds andovertakes all other forms of resistive forces acting on vehicle.Hence, predicting and improving aerodynamic performance of a carforms a very important aspect in overall product design cycle.Engineers and designers around the world try different methods forpredicting and improving the aerodynamics of a car, includingrigorous wind tunnel and test track testing. However, in ourcurrent paper, we will be discussing a novel approach to predictand improve the aerodynamics drag for an academic test vehicle(Ford-Ka) model. The paper will contain two sections, first sectionwill showcase usage of a new meshing technology, Mosaic Mesh, and arevolutionary breakthrough turbulence model, GEKO, to predictaerodynamic performance and validate with the test results.Additionally, section two will discuss the application of AnsysAdjoint Solver, a sensitivity-based algorithm, to automaticallyimprove the aerodynamics of car and showcase the reduction inoverall turn-around time for design iterations. Ansys Mosaic meshuses a mosaic grid like approach in volume meshing to optimise cellcount and at the same time provide with a good transition mesh,which is a Ansys patented technology. Additionally, the GeneralizedK-Omega turbulence model (GEKO) model, which utilizes a freecoefficients concept for any type of CFD applications, has beenfine-tuned and used for the current study. Furthermore, we willexplore the Ansys Adjoint Solver to showcase the automatic andintelligent way of improving the aerodynamic performance of car bymorphing the shapes of different parts of car, and showcasereduction in overall turn-around time for the designiterations

Notes:

Vendor supplied data

Publisher Number:

2021-26-0353

Access Restriction:

Restricted for use by site license