CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

BI-STABLE STATES IN THE WAKE OF A SIMPLIFIED GROUND TRANSPORTATION SYSTEM (GTS) MODEL

Anirudh Narayan Rao (Institutionen för tillämpad mekanik) ; Jie Zhang (Institutionen för mekanik och maritima vetenskaper) ; Guglielmo Minelli (Institutionen för mekanik och maritima vetenskaper, Strömningslära) ; Branislav Basara (Institutionen för tillämpad mekanik, Strömningslära) ; Sinisa Krajnovic (Institutionen för tillämpad mekanik, Strömningslära)
Int. Conf. on Jets, Wakes and Separated Flows (2017)
[Konferensbidrag, övrigt]

Recent experimental investigations of [1] in the wake of a Ground Transportation System (GTS) model has shown that the near wake topology is invariant over a large range of Reynolds numbers. A large eddy simulation (LES) is thus undertaken to investigate the flow topology in the near wake. In the vertical midplane behind the model, a flow state which is anti-symmetric to that reported in [1] is observed here, confirming the possibility of occurrence of bi-stable flow. Interestingly, the flow topology remains invariant to any increase in the gap height from the standard case, indicating that the underbody flow does not influence the bistable behaviour. Furthermore, the flow was also found to be insensitive to the incoming flow at a small yaw angle.



Denna post skapades 2017-12-11. Senast ändrad 2017-12-12.
CPL Pubid: 253701

 

Institutioner (Chalmers)

Institutionen för tillämpad mekanik (1900-2017)
Institutionen för mekanik och maritima vetenskaper
Institutionen för mekanik och maritima vetenskaper, Strömningslära
Institutionen för tillämpad mekanik, Strömningslära (2005-2017)

Ämnesområden

Maskinteknik

Chalmers infrastruktur

C3SE/SNIC (Chalmers Centre for Computational Science and Engineering)