Role of Flow-Consistent Grid in CFO

Kumar, Anand (1998) Role of Flow-Consistent Grid in CFO. Technical Report. C-MMACS/ National Aerospace Laboratories, Bangalore, India.

Full text available as:
[img] PDF
Restricted to Archive staff only

Download (4Mb)

    Abstract

    Computational grid can play a crucial role in accurate CFD simulations. This is shown here through the example of leading-edge vortex flow . Conventional grids for flow over sharp-edged delta wings do not resolve the near-apex flow due to dissimilar length scales of the flow and the grid . This in turn can affect the simulation of many vortex related phenomena . A grid that is consistent with the special nature of the flow is required to overcome13; the difficulty . The Euler simulation of transonic vortex is considered where employment of a flow-consistent grid is shown to give a well-resolved vortex with cross-flow shock and also the shock-induced secondary vortex, right from the apex . On the other hand, when a conventional grid is employed these features are absent in the near-apex flow, and the subsequent flow development is seriously affected. Euler simulation of subsonic vortex breakdown has also been considered . In this case the employment of a flow-consistent grid has led to unravel the fine details of the breakdown process .

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: Flow-consistent grid in CFD
    Subjects: MATHEMATICAL AND COMPUTER SCIENCES > Mathematical and Computer Scienes(General)
    Division/Department: CSIR Centre for Mathematical Modelling and Computer Simulation
    Depositing User: Mr. N A
    Date Deposited: 16 Jun 2006
    Last Modified: 24 May 2010 09:44
    URI: http://nal-ir.nal.res.in/id/eprint/1882

    Actions (login required)

    View Item