Abstr:UFR 2-12: Difference between revisions
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=== Underlying Flow Regime 2-12 === | === Underlying Flow Regime 2-12 === | ||
= Abstract = | = Abstract = | ||
Interaction of inherently unsteady wakes created by bluff bodies with | Interaction of inherently unsteady wakes created by bluff bodies with other bodies or elements of the same body is a complex phenomenon | ||
other bodies or elements of the same body is a complex phenomenon | commonly encountered in many flows of technical interest, e.g., the oleo and hoses on a landing gear, high lift wing configurations, | ||
commonly encountered in many flows of technical interest, e.g., the | environmental flows, heat exchanger fins, chimney stacks, off-shore oil platforms, etc. | ||
oleo and hoses on a landing gear, high lift wing configurations, | The flow past a tandem cylinders (TC) is a prototype for many of such interaction problems and possesses some of their | ||
environmental flows, heat exchanger fins, chimney stacks, off-shore oil | typical features (separation of turbulent boundary layer from the front cylinder and free shear layer roll-up, interaction of unsteady wake | ||
platforms, etc. The flow past a tandem cylinders (TC) is a prototype | with the downstream cylinder, and unsteady massively separated flow in its wake), thus being a fairly general representative of the considered | ||
for many of such interaction problems and possesses some of their | UFR. | ||
This motivated an experimental campaign of NASA Langley Research Center aimed at accumulating reliable benchmark data for the TC flow. | |||
These data have been used in the course of two subsequent international CFD campaigns (EU Project ATAAC and BANC-I Workshop) aimed at | |||
evaluating a capability of different turbulence modelling approaches and numerical methods to reproduce properly complex turbulent flows, in | |||
general, and the high Reynolds number TC flow, in particular. | |||
A purpose of this document is to summarise results of simulations of the TC flow carried out within the ATAAC project. | |||
Together with a similar analysis of the computational studies presented at the BANC-I Workshop, this gives a clear vision of both | |||
capabilities and restrictions of the current CFD methods and turbulence modelling strategies with regard to the considered UFR. | |||
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Revision as of 09:17, 26 October 2012
Turbulent Flow Past Two-Body Configurations
Flows Around Bodies
Underlying Flow Regime 2-12
Abstract
Interaction of inherently unsteady wakes created by bluff bodies with other bodies or elements of the same body is a complex phenomenon
commonly encountered in many flows of technical interest, e.g., the oleo and hoses on a landing gear, high lift wing configurations,
environmental flows, heat exchanger fins, chimney stacks, off-shore oil platforms, etc.
The flow past a tandem cylinders (TC) is a prototype for many of such interaction problems and possesses some of their
typical features (separation of turbulent boundary layer from the front cylinder and free shear layer roll-up, interaction of unsteady wake
with the downstream cylinder, and unsteady massively separated flow in its wake), thus being a fairly general representative of the considered
UFR.
This motivated an experimental campaign of NASA Langley Research Center aimed at accumulating reliable benchmark data for the TC flow.
These data have been used in the course of two subsequent international CFD campaigns (EU Project ATAAC and BANC-I Workshop) aimed at
evaluating a capability of different turbulence modelling approaches and numerical methods to reproduce properly complex turbulent flows, in
general, and the high Reynolds number TC flow, in particular.
A purpose of this document is to summarise results of simulations of the TC flow carried out within the ATAAC project.
Together with a similar analysis of the computational studies presented at the BANC-I Workshop, this gives a clear vision of both
capabilities and restrictions of the current CFD methods and turbulence modelling strategies with regard to the considered UFR.
Contributed by: A. Garbaruk, M. Shur and M. Strelets — New Technologies and Services LLC (NTS) and St.-Petersburg State Polytechnic University
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