Stability derivatives of a oscillating wedges in viscous hypersonic flow

In this paper an oscillating wedge has been considered, and the fluid slabs are kept at 900 to the wedge surface. The solutions of the continuity, momentum,and energy equations are obtained. By using the Rankine-Hugoniot relations for shockwaves, we can find the conditions behind the shock.This theo...

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Main Authors:	Shanbhag, Pavitra, S., Lavanya, Khan, Sher Afghan
Format:	Conference or Workshop Item
Language:	English English
Published:	Institute of Physics Publishing 2018
Subjects:	TJ163.13 Power resources
Online Access:	http://irep.iium.edu.my/65258/ http://irep.iium.edu.my/65258/ http://irep.iium.edu.my/65258/ http://irep.iium.edu.my/65258/1/65258_Stability%20derivatives%20of%20a%20oscillating.pdf http://irep.iium.edu.my/65258/2/65258_Stability%20derivatives%20of%20a%20oscillating_SCOPUS.pdf

id	iium-65258
recordtype	eprints
spelling	iium-652582018-07-30T03:31:58Z http://irep.iium.edu.my/65258/ Stability derivatives of a oscillating wedges in viscous hypersonic flow Shanbhag, Pavitra S., Lavanya Khan, Sher Afghan TJ163.13 Power resources In this paper an oscillating wedge has been considered, and the fluid slabs are kept at 900 to the wedge surface. The solutions of the continuity, momentum,and energy equations are obtained. By using the Rankine-Hugoniot relations for shockwaves, we can find the conditions behind the shock.This theory is unsteady one because of the consideration of effect of secondary wave reflections.Solutions are obtained for hypersonic flow over the wedge by varying different wedge semi vertex angles.These results shows extremely good consistency with Hui's predictions. When the effects of unsteadiness are considered then there is considerable change in the magnitude of the damping derivatives near the leading edge or initial 40 percent of the pivot positions and this difference is only marginal when we further down towards the trailing edge. However, this effect of unsteadiness is not visible in case of the stiffness derivatives. It is observed that the stiffness derivative increases with the increase in the wedge angle due to the increase in the plan form area of the wedge, resulting in the variation in the surface pressure distribution of the wedge. Further, due to the increment in the wedge angle the centre of pressure shifts towards the trailing edge. © Published under licence by IOP Publishing Ltd. Institute of Physics Publishing 2018-06 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/65258/1/65258_Stability%20derivatives%20of%20a%20oscillating.pdf application/pdf en http://irep.iium.edu.my/65258/2/65258_Stability%20derivatives%20of%20a%20oscillating_SCOPUS.pdf Shanbhag, Pavitra and S., Lavanya and Khan, Sher Afghan (2018) Stability derivatives of a oscillating wedges in viscous hypersonic flow. In: 1st International Conference on Aerospace and Mechanical Engineering (AeroMech 2017), 21st-22nd Nov. 2017, Pulau Pinang. http://iopscience.iop.org/article/10.1088/1757-899X/370/1/012051 10.1088/1757-899X/370/1/012051
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TJ163.13 Power resources
spellingShingle	TJ163.13 Power resources Shanbhag, Pavitra S., Lavanya Khan, Sher Afghan Stability derivatives of a oscillating wedges in viscous hypersonic flow
description	In this paper an oscillating wedge has been considered, and the fluid slabs are kept at 900 to the wedge surface. The solutions of the continuity, momentum,and energy equations are obtained. By using the Rankine-Hugoniot relations for shockwaves, we can find the conditions behind the shock.This theory is unsteady one because of the consideration of effect of secondary wave reflections.Solutions are obtained for hypersonic flow over the wedge by varying different wedge semi vertex angles.These results shows extremely good consistency with Hui's predictions. When the effects of unsteadiness are considered then there is considerable change in the magnitude of the damping derivatives near the leading edge or initial 40 percent of the pivot positions and this difference is only marginal when we further down towards the trailing edge. However, this effect of unsteadiness is not visible in case of the stiffness derivatives. It is observed that the stiffness derivative increases with the increase in the wedge angle due to the increase in the plan form area of the wedge, resulting in the variation in the surface pressure distribution of the wedge. Further, due to the increment in the wedge angle the centre of pressure shifts towards the trailing edge. © Published under licence by IOP Publishing Ltd.
format	Conference or Workshop Item
author	Shanbhag, Pavitra S., Lavanya Khan, Sher Afghan
author_facet	Shanbhag, Pavitra S., Lavanya Khan, Sher Afghan
author_sort	Shanbhag, Pavitra
title	Stability derivatives of a oscillating wedges in viscous hypersonic flow
title_short	Stability derivatives of a oscillating wedges in viscous hypersonic flow
title_full	Stability derivatives of a oscillating wedges in viscous hypersonic flow
title_fullStr	Stability derivatives of a oscillating wedges in viscous hypersonic flow
title_full_unstemmed	Stability derivatives of a oscillating wedges in viscous hypersonic flow
title_sort	stability derivatives of a oscillating wedges in viscous hypersonic flow
publisher	Institute of Physics Publishing
publishDate	2018
url	http://irep.iium.edu.my/65258/ http://irep.iium.edu.my/65258/ http://irep.iium.edu.my/65258/ http://irep.iium.edu.my/65258/1/65258_Stability%20derivatives%20of%20a%20oscillating.pdf http://irep.iium.edu.my/65258/2/65258_Stability%20derivatives%20of%20a%20oscillating_SCOPUS.pdf
first_indexed	2023-09-18T21:32:36Z
last_indexed	2023-09-18T21:32:36Z
_version_	1777412610642149376

Stability derivatives of a oscillating wedges in viscous hypersonic flow

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