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Multi-Modal Conversion of a Boundary-Layer Wind Tunnel to Open-Jet Test Cell
Technical Paper
2021-01-0018
ISSN: 0148-7191, e-ISSN: 2688-3627
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AeroTech® Digital Summit
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English
Abstract
A low-speed, open-circuit wind tunnel at Youngstown State University has been converted to a multi-modal facility, enabling interchangeable configurations from boundary-layer test section to an open-jet test cell to support flexible capabilities for ground and air vehicle technology development. The existing test-section entrance geometry of 0.24- by 1.0-m (internal flow configuration) was converted to a 0.50- by 0.50-m cross-section (external flow configuration), making use of the commonality of upstream flow conditioning components. Redistribution of the contraction exit area from the internal flow configuration enables the facility to maintain the same maximum test speed between the two modes. Reynolds-Averaged Navier-Stokes (RANS) calculations of the flow in the new three-dimensional contraction section and evolution of the free jet in the test cell are reported from the design study phase to assess boundary-layer separation margin and modeled plane jet spreading rate. Flow characterizations of the modified facility are reported, which include mean velocity measurements from a Pitot-tube survey and a hot-wire anemometer for turbulent velocity fluctuations. Cross-sectional uniformity and turbulence intensity are compared between the two configuration modes. The multi-modal facility offers flexible advantages in research-grade testing for air-cooled thermal management systems for electrified propulsion, testing of smart controls and materials under air load, and noise/vibration/harshness testing for advanced ground and air mobility components.
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Disotell, K., Chamberlain, T., and Castma, J., "Multi-Modal Conversion of a Boundary-Layer Wind Tunnel to Open-Jet Test Cell," SAE Technical Paper 2021-01-0018, 2021, https://doi.org/10.4271/2021-01-0018.Data Sets - Support Documents
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References
- Barlow , J.B. , Rae , W.H. , and Pope , A. Low-Speed Wind Tunnel Testing New York John Wiley & Sons 1999
- Mercker , E. , and Wiedemann , J. On the Correction of Interference Effects in Open Jet Wind Tunnels SAE Technical Paper 960671 1996 https://doi.org/10.4271/960671
- Mazur , Z.T. 2020 http://rave.ohiolink.edu/etdc/view?acc_num=ysu1597422848793191
- Wood , D.H. , and Westphal , R.V. Measurements of the Free-Stream Fluctuations above a Turbulent Boundary Layer Physics of Fluids 31 10 2834 2840 1988 https://doi.org/10.1063/1.866991
- Spalart , P.R. , and Watmuff , J.H. Experimental and Numerical Study of a Turbulent Boundary Layer with Pressure Gradients Journal of Fluid Mechanics 249 337 371 1993 https://doi.org/10.1017/S002211209300120X
- Blanco , M. , Battiato , J. , and Disotell , K.J. Sensitivity Study of Contraction Flow for Boundary-Layer Validation Wind Tunnel AIAA Paper 2019-3095 2019 https://doi.org/10.2514/6.2019-3095
- Johnson , K. , Zemba , M. , Conner , B.P. , Walker , J.M. et al. Digital Manufacturing of Pathologically-Complex 3D Printed Antennas IEEE Access 7 39378 39389 2019 https://doi.org/10.1109/ACCESS.2019.2906868
- Chin , J.C. , Schnulo , S.L. , Miller , T.B. , Prokopius , K. , and Gray , J. Battery Performance Modeling on Maxwell X-57 AIAA Paper 2019-0784 2019 https://doi.org/10.2514/6.2019-0784
- Chin , J.C. , Schnulo , S.L. , and Smith , A.D. Transient Thermal Analyses of Passive Systems on SCEPTOR X-57 AIAA Paper 2017-3784 2017 https://doi.org/10.2514/6.2017-3784
- Arend , D.J. , Wolter , J.D. , Hirt , S.M. , Provenza , A. et al. Experimental Evaluation of an Embedded Boundary Layer Ingesting Propulsor for Highly Efficient Subsonic Cruise Aircraft AIAA Paper 2017-5041 2017 https://doi.org/10.2514/6.2017-5041
- Jacobs , E.N. 1929
- Manuel , G.S. , Molloy , J.K. , and Barna , P.S. 1992
- Mehta , R.D. , and Bradshaw , P. Design Rules for Small Low Speed Wind Tunnels The Aeronautical Journal 83 827 443 453 1979 https://doi.org/10.1017/S0001924000031985
- Bell , J.H. , and Mehta , R.D. Boundary-Layer Predictions for Small Low-Speed Contractions AIAA Journal 27 3 372 374 1989 https://doi.org/10.2514/3.10122
- Menter , F.R. , Kuntz , M. , and Langtry , R. Ten Years of Industrial Experience with the SST Turbulence Model Turbulence, Heat and Mass Transfer 4 Begell House, Inc. 2003 625 632
- Fluent 19.1 Theory Guide ANSYS, Inc. 2018
- Tavoularis , S. Measurement in Fluid Mechanics Cambridge University Press 2005
- Coleman , H.W. , and Steele , W.G. Engineering Application of Experimental Uncertainty Analysis AIAA Journal 33 10 1888 1896 1995 https://doi.org/10.2514/3.12742
- Bruun , H.H. Hot-Wire Anemometry: Principles and Signal Analysis Oxford University Press 1995
- Bendat , J.S. , and Piersol , A.G. Engineering Applications of Correlation and Spectral Analysis Wiley 1993
- Mehta , R.D. 1978
- Neuhart , D.H. , and McGinley , C.B. 2004
- Watmuff , J.H. Detrimental Effects of Almost Immeasurably Small Freestream Nonuniformities Generated by Wind-Tunnel Screens AIAA Journal 36 3 379 386 1998 https://doi.org/10.2514/2.374
- Ghasemi , A. , Roussinova , V. , Balachandar , R. , and Barron , R.M. Reynolds Number Effects in the Near-Field of a Turbulent Square Jet Experimental Thermal and Fluid Science 61 249 258 2015 https://doi.org/10.1016/j.expthermflusci.2014.10.025