Flow over a flexible membrane is different to that over a rigid object. Fluid stresses developed over a membrane create a deflection, which in turn affects the flow field and generates a new stress distribution, thereby altering the original deflection. The behavior of the membrane can be modeled using the Young-Laplace equation which links the pressure difference across the membrane and the surface tension force with the radius of curvature of the membrane surface. In this work a computational approach is developed to solve the Young-Laplace equation. The approach is validated with a simple case of simply supported membrane subjected to a pressure load and a pretension. The performance of a S825 airfoil whose upper surface is replaced with a membrane is studied for various angles of attack. It is noted that the deformed airfoils perform better than the S825 till α = 6°. Beyond this angle of attack it is observed that the drop in performance is small.
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ASME 2013 Gas Turbine India Conference
December 5–6, 2013
Bangalore, Karnataka, India
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5616-1
PROCEEDINGS PAPER
Reduced Order Modeling of Deflection of a Membrane Covered Airfoil in a Fluid Flow Available to Purchase
Srinath Narayana Murthy,
Srinath Narayana Murthy
GE Global Research, Bangalore, India
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Jaikumar Loganathan,
Jaikumar Loganathan
GE Global Research, Bangalore, India
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Ashok Gopinath
Ashok Gopinath
GE Global Research, Bangalore, India
Search for other works by this author on:
Srinath Narayana Murthy
GE Global Research, Bangalore, India
Jaikumar Loganathan
GE Global Research, Bangalore, India
Ashok Gopinath
GE Global Research, Bangalore, India
Paper No:
GTINDIA2013-3817, V001T07A007; 7 pages
Published Online:
February 28, 2014
Citation
Narayana Murthy, S, Loganathan, J, & Gopinath, A. "Reduced Order Modeling of Deflection of a Membrane Covered Airfoil in a Fluid Flow." Proceedings of the ASME 2013 Gas Turbine India Conference. ASME 2013 Gas Turbine India Conference. Bangalore, Karnataka, India. December 5–6, 2013. V001T07A007. ASME. https://doi.org/10.1115/GTINDIA2013-3817
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