Relevant bibliographies by topics / Unsteady

Academic literature on the topic 'Unsteady'

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Published: 4 June 2021
Last updated: 10 March 2023

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Journal articles on the topic "Unsteady"

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Kailasanath, K. "Unsteady Combustion." AIAA Journal 35, no. 5 (May 1997): 920. http://dx.doi.org/10.2514/2.7470.

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Nandhagopal, R. "Unsteady gait." Postgraduate Medical Journal 82, no. 967 (May 1, 2006): e7-e7. http://dx.doi.org/10.1136/pgmj.2005.040774.

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Marsh, Laura. "Unsteady Work." Dissent 67, no. 3 (2020): 149–52. http://dx.doi.org/10.1353/dss.2020.0043.

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Baider, Lea. "Unsteady Balance." Journal of Pediatric Hematology/Oncology 33 (October 2011): S108—S111. http://dx.doi.org/10.1097/mph.0b013e318230ddb2.

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Foucault, Eric, and Philippe Szeger. "Unsteady flowmeter." Flow Measurement and Instrumentation 69 (October 2019): 101607. http://dx.doi.org/10.1016/j.flowmeasinst.2019.101607.

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Derrig, Anne. "Unsteady Detective." American Book Review 33, no. 1 (2011): 14. http://dx.doi.org/10.1353/abr.2011.0174.

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Zhang, Hongxin, Shaowen Chen, Yun Gong, and Songtao Wang. "A comparison of different unsteady flow control techniques in a highly loaded compressor cascade." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 6 (April 18, 2018): 2051–65. http://dx.doi.org/10.1177/0954410018770492.

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A numerical research is applied to investigate the effect of controlling the flow separation in a certain highly loaded compressor cascade using different unsteady flow control techniques. Firstly, unsteady pulsed suction as a new novel unsteady flow control technique was proposed and compared to steady constant suction in the control of flow separation. A more exciting effect of controlling the flow separation and enhancing the aerodynamic performance for unsteady pulsed suction was obtained compared to steady constant suction with the same time-averaged suction flow rate. Simultaneously, with the view to further exploring the potential of unsteady flow control technique, unsteady pulsed suction, unsteady pulsed blowing, and unsteady synthetic jet (three unsteady flow control techniques) are analyzed comparatively in detail by the related unsteady aerodynamic parameters such as excitation location, frequency, and amplitude. The results show that unsteady pulsed suction shows greater advantage than unsteady pulsed blowing and unsteady synthetic jet in controlling the flow separation. Unsteady pulsed suction and unsteady synthetic jet have a wider range of excitation location obtaining positive effects than unsteady pulsed blowing. The ranges of excitation frequency and excitation amplitude for unsteady pulsed suction gaining favorable effects are both much wider than that of unsteady pulsed blowing and unsteady synthetic jet. The optimum frequencies of unsteady pulsed suction, unsteady pulsed blowing, and unsteady synthetic jet are found to be different, but these optimum frequencies are all an integer multiple of the natural frequency of vortex shedding. The total pressure loss coefficient is reduced by 16.98%, 16.55%, and 17.38%, respectively, when excitation location, frequency, and amplitude are all their own optimal values for unsteady pulsed suction, unsteady pulsed blowing, and unsteady synthetic jet. The optimum result of unsteady synthetic jet only slightly outperforms that of unsteady pulsed suction and unsteady pulsed blowing. But unfortunately, there is no advantage from the standpoint of overall efficiency for the optimum result of unsteady synthetic jet because the slight improvement has to require a greater power consumption than the unsteady pulsed suction and unsteady pulsed blowing methods.
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Botta, Nicola, and Rolf Jeltsch. "A numerical method for unsteady flows." Applications of Mathematics 40, no. 3 (1995): 175–201. http://dx.doi.org/10.21136/am.1995.134290.

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Fan, S., and B. Lakshminarayana. "Computation and Simulation of Wake-Generated Unsteady Pressure and Boundary Layers in Cascades: Part 1—Description of the Approach and Validation." Journal of Turbomachinery 118, no. 1 (January 1, 1996): 96–108. http://dx.doi.org/10.1115/1.2836612.

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The unsteady pressure and boundary layers on a turbomachinery blade row arising from periodic wakes due to upstream blade rows are investigated in this paper. A time-accurate Euler solver has been developed using an explicit four-stage Runge–Kutta scheme. Two-dimensional unsteady nonreflecting boundary conditions are used at the inlet and the outlet of the computational domain. The unsteady Euler solver captures the wake propagation and the resulting unsteady pressure field, which is then used as the input for a two-dimensional unsteady boundary layer procedure to predict the unsteady response of blade boundary layers. The boundary layer code includes an advanced k–ε model developed for unsteady turbulent boundary layers. The present computational procedure has been validated against analytic solutions and experimental measurements. The validation cases include unsteady inviscid flows in a flat-plate cascade and a compressor exit guide vane (EGV) cascade, unsteady turbulent boundary layer on a flat plate subject to a traveling wave, unsteady transitional boundary layer due to wake passing, and unsteady flow at the midspan section of an axial compressor stator. The present numerical procedure is both efficient and accurate in predicting the unsteady flow physics resulting from wake/blade-row interaction, including wake-induced unsteady transition of blade boundary layers.
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Boiko, Andrey V., and Andrey V. Ivanov. "Goertler's unsteady instability." Siberian Journal of Physics 2, no. 3 (2007): 8–15. http://dx.doi.org/10.54238/1818-7994-2007-2-3-8-15.

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Dissertations / Theses on the topic "Unsteady"

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Renick, Dirk H. "Unsteady propeller hydrodynamics." Thesis, Springfield, Va. : Available from National Technical Information Service, 2001. http://handle.dtic.mil/100.2/ADA393206.

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Majumdar, Sharanya Jyoti. "Unsteady distortion noise." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311216.

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Morgan, P. "Unsteady flow in collapsible tubes." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/37791.

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Hwu, Tzong-Her. "Dispersion in unsteady deflected flows." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259980.

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Mohd, Yatim Yazariah. "Unsteady flows of thin films." Thesis, University of Strathclyde, 2010. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=14374.

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Hwang, Kuo-Lun. "Friction in unsteady pipe flows." Thesis, University of Dundee, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413174.

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Wu, Z. Y. "Studies in unsteady flame propagation." Thesis, Imperial College London, 1986. http://hdl.handle.net/10044/1/38197.

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Keenan, David P. "Marine propellers in unsteady flow." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14348.

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Armstrong, Brian Jeffrey. "Unsteady flow over bluff bodies." Thesis, University of Edinburgh, 1985. http://hdl.handle.net/1842/11409.

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Craske, John. "Unsteady turbulent jets and plumes." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/44208.

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This thesis investigates the physics of statistically unsteady axisymmetric turbulent jets and plumes using theory and direct numerical simulation. The focus is on understanding and modelling the physics that govern the behaviour of radially integrated quantities, such as the integral scalar flux, momentum flux and buoyancy flux. To this end, a framework is developed that generalises previous approaches, making no assumption about the longitudinal velocity profile, turbulence transport or pressure. The framework is used to develop well-posed integral models that exhibit a good agreement with simulation data. In the case of passive scalar transport, shear-flow dispersion is observed to be dominant in comparison with longitudinal turbulent mixing. A dispersion closure for free-shear flows based on the classical work of Taylor (Proc. R. Soc. Lond. A, vol. 219 1954b, pp. 186-203) is therefore developed. In the analysis of jets whose source momentum flux undergoes an instantaneous step change, it is demonstrated that a momentum-energy framework, of the kind used by Priestley & Ball (Q. J. R. Meteorol. Soc., vol. 81 1955, pp. 144-157), is the natural choice for unsteady free-shear flows. The framework is used to demonstrate why existing top-hat models of unsteady jets and plumes are ill-posed and that jets and plumes with Gaussian velocity profiles remain approximately straight-sided and are insensitive to source perturbations. Contrary to the view that the unsteady jet and plume equations are parabolic, it is shown that the generalised system of equations is hyperbolic. In unsteady plumes, the relative orientation of three independent families of characteristic curves determines whether propagating waves are lazy, forced or pure. To relate findings that are based on the momentum-energy framework to the classical mass-momentum framework, an unsteady entrainment coefficient is defined that generalises the decomposition proposed by Kaminski et al. (2005, J. Fluid Mech., vol. 526, pp. 361-376).
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Books on the topic "Unsteady"

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Culick, F., M. V. Heitor, and J. H. Whitelaw, eds. Unsteady Combustion. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3.

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1933-, Culick F., Heitor M. V. 1957-, Whitelaw James H, North Atlantic Treaty Organization. Scientific Affairs Division., and NATO Advanced Study Institute on Unsteady Combustion (1993 : Granja, Porto, Portugal), eds. Unsteady combustion. Dordrecht: Kluwer Academic, 1996.

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Culick, F. Unsteady Combustion. Dordrecht: Springer Netherlands, 1996.

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Von Karman Institute for Fluid Dynamics., ed. Unsteady aerodynamics. Rhode Saint Genese, Belgium: von Karman Institute for Fluid Dynamics, 1988.

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Sun, Mingbo, Hongbo Wang, Zun Cai, and Jiajian Zhu. Unsteady Supersonic Combustion. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3595-6.

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Unsteady transonic flow. Cambridge [England]: Cambridge University Press, 1989.

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Klinkner, Philip A. The Unsteady March. S.l: Free Press, 1998.

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David, Nixon, and American Institute of Aeronautics and Astronautics., eds. Unsteady transonic aerodynamics. Washington, DC: American Institute of Aeronautics and Astronautics, 1989.

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Rao, J. S. Turbomachine unsteady aerodynamics. New Delhi: Wiley Eastern, 1994.

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Landahl, M. T. Unsteady transonic flow. Cambridge: Cambridge University Press, 1989.

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Book chapters on the topic "Unsteady"

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Fernandes, E. C., and M. V. Heitor. "Unsteady Flames and the Rayleigh Criterion." In Unsteady Combustion, 1–16. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_1.

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Bahr, D. W. "Aircraft Turbine Engine NOx Emission Abatement." In Unsteady Combustion, 243–64. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_10.

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Haahtela, O., W. Hentschel, and K. P. S. Schindler. "Diagnostics of Diesel Combustion." In Unsteady Combustion, 267–82. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_11.

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Senda, J., Y. Tanabe, and H. Fujimoto. "Visualization and Quantitative Analysis on Fuel Vapour Concentration in a Diesel Spray." In Unsteady Combustion, 283–94. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_12.

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Whitelaw, J. H., and H. M. Xu. "Flame and Turbulence Interactions in a Four-Stroke SI Engine." In Unsteady Combustion, 295–314. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_13.

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Vannobel, F. "Spray Transport and Mixing in Spark Ignition Engines: Some Modelling and Experimental Trends." In Unsteady Combustion, 315–32. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_14.

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Witze, P. O. "In-Cylinder Diagnostics for Production Spark Ignition Engines." In Unsteady Combustion, 333–68. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_15.

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Ohira, T., Y. Ikeda, and T. Nakagima. "Cyclic Variation Due to Misfiring in a Small Two-Stroke Engine." In Unsteady Combustion, 369–81. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_16.

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Neij, H. M., B. Johansson, and M. Aldén. "Cycle-Resolved Two-Dimensional Laser-Induced Fluorescence Measurements of Fuel/Air Ratio Correlated to Early Combustion in a Spark-Ignition Engine." In Unsteady Combustion, 383–89. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_17.

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Eckbreth, A. C. "Laser Diagnostics for Temperature and Species in Unsteady Combustion." In Unsteady Combustion, 393–410. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1620-3_18.

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Conference papers on the topic "Unsteady"

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HUGO, RONALD, and ERIC JUMPER. "Controlling unsteady lift using unsteady trailing-edge flap motions." In 30th Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1992. http://dx.doi.org/10.2514/6.1992-275.

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Fabian, Michael, and Eric Jumper. "Convected and potential unsteady disturbances interacting with an unsteady cascade." In 32nd Joint Propulsion Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-2672.

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Fabian, M., and E. Jumper. "Unsteady pressure distributions around compressor vanes in an unsteady, transonic cascade." In 33rd Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1995. http://dx.doi.org/10.2514/6.1995-302.

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Freiereisen, John, and Sanford Fleeter. "Unsteady potential effects on rotor wake and stator unsteady aerodynamic response." In 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1998. http://dx.doi.org/10.2514/6.1998-3432.

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Malinov, I. O., I. V. Souleimanov, I. V. Zakharov, and B. Belyakova. "System-Unsteady Flooding Approach." In IOR 2003 - 12th European Symposium on Improved Oil Recovery. European Association of Geoscientists & Engineers, 2003. http://dx.doi.org/10.3997/2214-4609-pdb.7.a020.

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RAMIZ, M., and MUKUND ACHARYA. "Signatures of unsteady separation." In 2nd Shear Flow Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-1017.

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LIU, JONG-SHANG, and PETER SOCKOL. "Unsteady Euler cascade analysis." In 27th Aerospace Sciences Meeting. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-322.

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STEPHEN, ERIC, JOHN WALKER, MICHAEL ROBINSON, RODOLFO LLOBET, and BRUCE L. "Forced internal unsteady aerodynamics." In 26th Aerospace Sciences Meeting. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1988. http://dx.doi.org/10.2514/6.1988-324.

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FFOWC, J. "Control of unsteady flow." In 2nd Shear Flow Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-990.

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MEHTA, JAYESH, P. MUNGUR, W. DODDS, D. BAHR, and STEVE CLOUSER. "Thermoacoustics of unsteady combustion." In 13th Aeroacoustics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1990. http://dx.doi.org/10.2514/6.1990-3928.

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Reports on the topic "Unsteady"

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Zufelt, Jon E., and Robert Ettema. Unsteady Ice Jam Processes. Fort Belvoir, VA: Defense Technical Information Center, December 1997. http://dx.doi.org/10.21236/ada334991.

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Stern, Fred. Unsteady Viscous Propusor Hydrodynamics. Fort Belvoir, VA: Defense Technical Information Center, September 1994. http://dx.doi.org/10.21236/ada300213.

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Acosta, Allan J., and Anthony Leonard. Tip Vortices in Unsteady Flows. Fort Belvoir, VA: Defense Technical Information Center, January 1992. http://dx.doi.org/10.21236/ada251216.

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Zierke, William C. Unsteady Force Calculations in Turbomachinery. Fort Belvoir, VA: Defense Technical Information Center, July 1991. http://dx.doi.org/10.21236/ada237937.

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Greitzer, Edward M., Alan H. Epstein, Michael B. Giles, James E. McCune, and Choon S. Tan. Unsteady Flow Phenomena in Turbomachines. Fort Belvoir, VA: Defense Technical Information Center, January 1990. http://dx.doi.org/10.21236/ada218370.

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Shen, S. F., T. Wu, Z. Xiao, and J. S. Kim. Unsteady Separation over Maneuvering Bodies. Fort Belvoir, VA: Defense Technical Information Center, August 1990. http://dx.doi.org/10.21236/ada226829.

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Ho, Chih-Ming, Ismet Gursul, Chiang Shih, Hank Lin, and Mario Lee. Control of Unsteady Aerodynamic Forces. Fort Belvoir, VA: Defense Technical Information Center, July 1990. http://dx.doi.org/10.21236/ada227365.

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Shen, S. F. Unsteady Viscous Flows Over Moving Body. Fort Belvoir, VA: Defense Technical Information Center, August 1988. http://dx.doi.org/10.21236/ada200269.

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Maxworthy, T., and H. K. Cheng. Studies of Unsteady Vortex Flap Aerodynamics. Fort Belvoir, VA: Defense Technical Information Center, June 1989. http://dx.doi.org/10.21236/ada209837.

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Wu, J. C. Studies in Non-Linear Unsteady Aerodynamics. Fort Belvoir, VA: Defense Technical Information Center, October 1986. http://dx.doi.org/10.21236/ada177006.

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