Control of Separation Induced on the Wing of Transonic Speed Aircraft by Means of Micro Vortex Generator

Autores

  • Abolghasem Zare Shahneh Cranfield University SoE, Aerospace Department

Palavras-chave:

Boundary Layer, Micro Vortex Generator, Separation, Shock Wave, Transonic Flow, Wind Tunnel

Resumo

This experimental study provides an assessment of the potential of applying a control device to mitigate undesired separation formed on the wing of an aircraft causing instability of the airliner.  They are used in a wide range of aircrafts and yet needs to be improved for wider applications.The study was conducted in a transonic wind tunnel. The concept of passive control, led to applying a pair of micro vortex generator at a certain distance from the location of normal shock on the wing. Detailed measurements of a fully developed flat plate turbulent boundary layer were used to assess the performance of the control device. The performance of vortex generator was assessed by comparing flow before separation and after the reattachment. Mean flow data such as static and Preston pressure distributions, boundary layer total pressure and velocity profile and also Schlieren method were used in evaluating the performance of the control device.Micro vortex generator has shown a reduction of 30% on displacement thickness at the area of separation in comparison with undisturbed flow at shock location and an outstanding result declared a reduction of about 60% in shape factor of the device at the shock location. The result promises a considerable reduction of separation which provide more manoeuvrability and stability of the aircraft.

Downloads

Publicado

2011-09-02

Edição

Vol. 1 N.º 2 (2011)

Secção

Research Articles

Licença

Declaration and Copyright Transfer Form

(to be completed by authors)

I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.

·         I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.

·         I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).

·         I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.

·          I/We also agree to the authorship of the article in the following order:

Author’s name                                    

 

1. ________________

2. ________________

3. ________________

_______________

We  Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal.