Stefano Raimondo Bonsignore
StereoPIV analysis of the near wake of a square-back bluff body.
Rel. Gaetano Iuso, Gioacchino Cafiero. Politecnico di Torino, Master of science program in Aerospace Engineering, 2020
Abstract
The automotive market is, nowadays, one of the most competitive and innovative in the eld of transportation: optimization, e??ciency and emission reduction are probably three of the main key concepts. Generally, a vehicle can be treated as a blu body, even if years and years of aerodynamic development lead to a drastic improvement in drag and e??ciency. Nev- ertheless, city cars and small/medium cargo vans are tipically known for their high level of practicality, linked to the characteristic square-back shape. As a consequence, this kind of blu bodies tend to develop big and complex three dimensional wakes and, therefore, a very high level of drag.
Therefore, the comprehension and in-depth knowledge of the structure of the wake and its characteristic dynamics, often complex, unsteady and unstable, is the basis of the development and optimization process of square-back vehicles
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