ORCiD Google Scholar ResearcherID Scopus Author ID
Refereed Journals
2019
Baidya, R., Baars, W.J., Zimmerman, S., Samie, M., Hearst, R.J., Dogan, E., Mascotelli, L., Zheng, X., Bellani, G., Talamelli, A., Ganapathisubramani, B., Hutchins, N., Marusic, I., Klewicki, J., Monty, J.P. (2019) Simultaneous skin friction and velocity measurements in high Reynolds number pipe and boundary layer flows. J. Fluid Mech., in press.
Krug, D., Baars, W.J., Hutchins, N., Marusic, I. (2019) Vertical coherence of turbulence in the atmospheric surface layer: connecting the hypotheses of Townsend and Davenport. Boundary-Layer Meteorol., online (open access). doi: 10.1007/s10546-019-00445-4
2017
Marusic, I., Baars, W.J., Hutchins, N. (2017) Scaling of the streamwise turbulence intensity in the context of inner-outer interactions in wall-turbulence. Phys. Rev. Fluids 2, 100502. doi: 10.1103/PhysRevFluids.2.100502
Baars, W.J., Hutchins, N., Marusic, I. (2017) Self-similarity of wall-attached turbulence in boundary layers. J. Fluid Mech. 823, R2. doi: 10.1017/jfm.2017.357
Abbassi, M.R., Baars, W.J., Hutchins, N., Marusic, I. (2017) Skin-friction drag reduction in a high-Reynolds-number turbulent boundary layer via real-time control of large-scale structures. Int. J. Heat Fluid Flow 67, 30-41. doi: 10.1016/j.ijheatfluidflow.2017.05.003
Baars, W.J., Hutchins, N., Marusic, I. (2017) Reynolds-number trend of hierarchies and scale interactions in turbulent boundary layers. Phil. Trans. R. Soc. A 375:20160077. doi: 10.1098/rsta.2016.0077
2016
Squire, D.T., Baars, W.J., Hutchins, N., Marusic, I. (2016) Inner—outer interactions in rough-wall turbulence. J. Turbulence 17:12, 1159-1178. doi: 10.1080/14685248.2016.1235278
Baars, W.J., Hutchins, N., Marusic, I. (2016) Spectral stochastic estimation of high-Reynolds-number wall-bounded turbulence for a refined inner-outer interaction model. Phys. Rev. Fluids 1, 054406. doi: 10.1103/PhysRevFluids.1.054406 | data & scripts available
Baars, W.J., Tinney, C.E., Hamilton, M.F. (2016) Piecewise-spreading regime model for calculating effective Gol’dberg numbers for supersonic jet noise. AIAA J. 54:9, 2833-2842. doi: 10.2514/1.J054790 | script available
Baars, W.J., Squire, D.T., Talluru, K.M., Abbassi, M.R., Hutchins, N., Marusic, I. (2016) Wall-drag measurements of smooth- and rough-wall turbulent boundary layers using a floating element. Exp. Fluids 57:5, 90, 1-16. doi: 10.1007/s00348-016-2168-y | data available
Fiévet, R., Tinney, C.E., Baars, W.J., Hamilton, M.F. (2016) Coalescence in the sound field of a laboratory scale supersonic jet. AIAA J. 54:1, 254-265. doi: 10.2514/1.J054252
2015
Baars, W.J., Talluru, K.M., Hutchins, N., Marusic, I. (2015) Wavelet analysis of wall turbulence to study large-scale modulation of small scales. Exp. Fluids 56:10, 188, 1-15. doi: 10.1007/s00348-015-2058-8
Baars, W.J., Ruf, J.H., Tinney, C.E. (2015) Non-stationary shock motion unsteadiness in an axisymmetric geometry with pressure gradient. Exp. Fluids 56:5, 92, 1-18. doi: 10.1007/s00348-015-1958-y
2014
Donald, B.W., Baars, W.J., Tinney, C.E., Ruf, J.H. (2014) The sound from large area ratio nozzles during fixed and transient operations. AIAA J. 52:7, 1474-1485. doi: 10.2514/1.J052588
Baars, W.J., Tinney, C.E., Wochner, M.S., Hamilton, M.F. (2014) On cumulative nonlinear acoustic waveform distortions from high-speed jets. J. Fluid Mech. 749, 331-366. doi: 10.1017/jfm.2014.228
Baars, W.J., Tinney, C.E. (2014) Proper orthogonal decomposition-based spectral higher-order stochastic estimation. Phys. Fluids 26, 055112, 1-20. doi: 10.1063/1.4879255
Baars, W.J., Tinney, C.E. (2014) Shock-structures in the acoustic field of a Mach 3 jet with crackle. J. Sound Vibr. 333:12, 2539-2553. doi: 10.1016/j.jsv.2014.01.008
2013 and prior
Baars, W.J., Tinney, C.E. (2013) Transient wall pressures in an overexpanded and large area-ratio nozzle. Exp. Fluids 54:2, 1468, 1-17. doi: 10.1007/s00348-013-1468-8
Baars, W.J., Tinney, C.E., Ruf, J.H., Brown, A.M., McDaniels, D.M. (2012) Wall pressure unsteadiness and side loads in overexpanded rocket nozzles. AIAA J. 50:1, 61-73. doi: 10.2514/1.J051075
Baars, W.J., Stearman, R.O., Tinney, C.E. (2010) A review on the impact of icing on aircraft stability and control. J. Aeroelast. Struct. Dyn. 2:1, 35-52. doi: 10.3293/asdj.2010.7
Conference Proceedings
(please contact me if you would like to receive any conference proceedings)
Murray, N.E., Baars, W.J. (2019) Passive nozzle-based technology for the reduction of heated supersonic jet noise. Delft, Netherlands.
Ruan, Z., Baars, W.J., Hutchins, N., Marusic, I. (2019) Role of large-scales on turbulence skin-friction in high-Reynolds-number turbulent boundary layers. European Drag Reduction and Flow Control Meeting, ERCOFTAC, Bad Herrenalb, Germany.
Ruan, Z., Baars, W.J., Abbassi, M.R., Hutchins, N., Marusic, I. (2018) Active conrol of large-scales in a high-Reynolds-number turbulent boundary layer. 21st Australasian Fluid Mech. Conf., Adelaide, Australia.
Baars, W.J., Hutchins, N., Marusic, I. (2017) Wall-coherent structure of turbulent boundary layers: an empirical spectral filter. 16th European Turb. Conf., Stockholm, Sweden.
Abbassi, M.R., Baars, W.J., Hutchins, N., Marusic, I. (2016) Drag reduction via large-scale opposition flow control in a high-Reynolds-number turbulent boundary layer. 20th Australasian Fluid Mech. Conf., Perth, Australia.
Marusic, I., Baars, W.J., Hutchins, N. (2015) An extended view of the inner-outer interaction model for wall-bounded turbulence using spectral linear stochastic estimation. Proc. Engineering, 126, 24-28 (open access). doi: 10.1016/j.proeng.2015.11.171
Baars, W.J., Talluru, K.M., Hutchins, N., Marusic, I. (2015) Wavelet analysis of broadband signals to extract amplitude and frequency modulation: an application to wall turbulence. 15th European Turb. Conf., Delft, The Netherlands. online proceedings (.pdf)
Baars, W.J., Talluru, K.M., Bishop, B.J., Hutchins, N., Marusic, I. (2014) Spanwise inclination and meandering of large-scale structures in a high-Reynolds-number turbulent boundary layer. 19th Australasian Fluid Mech. Conf., Melbourne, Australia. online proceedings (.pdf)
Baars, W.J., Tinney, C.E., Hamilton, M.F. (2014) Challenges associated with studying nonlinear distortion of acoustic waveforms emitted by high-speed jets. Internoise 2014, Melbourne, VIC, Australia (invited). online proceedings (.pdf)
Fiévet, R., Tinney, C.E., Baars, W.J., Hamilton, M.F. (2014) Acoustic waveforms produced by a laboratory scale supersonic jet. AIAA-2014-2906, Atlanta, GA, USA. doi: 10.2514/6.2014-2906
Baars, W.J., Tinney, C.E. (2014) Temporal and spectral quantification of the ‘crackle’ component in supersonic jet noise. In Y. Zhou et al. (eds.), Fluid-Structure-Sound Interactions and Control, Lecture Notes in Mech. Eng., Springer-Verslag, Berlin, Proc. 2nd Symp. on Fluid-Structure-Sound Interactions and Control, Hong Kong & Macau, China. doi: 10.1007/978-3-642-40371-2_30
Baars, W.J., Tinney, C.E. (2013) Quantifying crackle-inducing acoustic shock-structures emitted by a fully-expanded Mach 3 jet. AIAA-2013-2081, Berlin, Germany. doi: 10.2514/6.2013-2081
Baars, W.J., Tinney, C.E. (2013) Time preserved jet crackle quantification. Texas Fluid Dynamics Meeting, Lake Buchanan, TX, USA.
Murray, N.E., Lyons, G., Tinney, C.E., Donald, B.W., Baars, W.J., Thurow, B., Haynes, H., Panickar, P. (2012) A laboratory framework for synchronous near/far-field acoustics and MHz PIV in high-temperature shock-containing jets. ASME/NCAD2012-1270, 505-519, Proc. Internoise 2012, New York, NY, USA. doi: 10.1115/NCAD2012-1270
Baars, W.J., Tinney, C.E., Wochner, M.S. (2012) Nonlinear noise propagation from a fully expanded Mach 3 jet. AIAA-2012-1177, Nashville, TN, USA. doi: 10.2514/6.2012-1177
Donald, B.W., Baars, W.J., Tinney, C.E., Ruf, J.H. (2012) Acoustic characterization of sub-scale rocket nozzles. AIAA-2012-0544, Nashville, TN, USA. doi: 10.2514/6.2012-544
Baars, W.J., Tinney, C.E., Ruf, J.H. (2011) Time-frequency analysis of rocket nozzle wall pressures during start-up transients. J. Phys. Conf. Ser., 318, 092001, Proc. 13th European Turb. Conf., Warsaw, Poland. doi: 10.1088/1742-6596/318/9/092001
Baars, W.J., Tinney, C.E., Murray, N.E., Jansen, B.J., Panickar, P. (2011) The effect of heat on turbulent mixing noise in supersonic jets. AIAA-2011-1029, Orlando, FL, USA. doi: 10.2514/6.2011-1029
Baars, W.J., Tinney, C.E., Ruf, J.H., Brown, A.M., McDaniels, D.M. (2010) On the unsteadiness associated with shock-induced separation in overexpanded rocket nozzles. AIAA-2010-6728, Nashville, TN, USA. doi: 10.2514/6.2010-6728
Baars, W.J., Tinney, C.E., Powers, E.J. (2010) POD based spectral higher-order stochastic estimation. AIAA-2010-1292, Orlando, FL, USA. doi: 10.2514/6.2010-1292
Baars, W.J., Tinney, C.E., Stearman, R.O. (2009) Higher-order statistical analysis of stability upsets induced by elevator horn icing. AIAA-2009-3770, San Antonio, TX, USA. doi: 10.2514/6.2009-3770
Baars, W.J., Stearman, R.O., Tinney, C.E. (2009) Wind tunnel studies employing higher order statistics to detect ice-induced upsets. IFASD-2009-012, Seattle, WA, USA.
Published Abstracts
Baars, W.J., Hutchins, N., Marusic, I. (2017) Data-driven spectral filters for decomposing the streamwise turbulent kinetic energy in turbulent boundary layers. Bull. of the Am. Physical. Soc., 62:20.
Baars, W.J., Hutchins, N., Marusic, I. (2016) Spectral stochastic estimation of high-Reynolds-number wall-bounded turbulence for a refined inner-outer interaction model. Bull. of the Am. Physical. Soc., 61:20.
Baars, W.J., Hutchins, N., Marusic, I. (2015) Arrangement of scale-interaction and large-scale modulation in high Reynolds number turbulent boundary layers. Bull. of the Am. Physical. Soc., 60:21.
Baars, W.J., Tinney, C.E., Hamilton, M.F. (2015) Addressing the likelihood of cumulative nonlinear distortion in supersonic jet noise using the effective Gol’dberg number. Bull. of the Am. Physical. Soc., 60:21.
Rojo, R.M., Tinney, C.E., Baars, W.J., Ruf, J.H. (2014) End-effects-regime in full scale and lab scale rocket nozzles. Bull. of the Am. Physical. Soc., 59:20. BAPS.2014.DFD.H21.3
Baars, W.J., Talluru, K.M., Hutchins, N., Marusic, I. (2014) Floating element measurements of wall-shear stress exerted by high-Reynolds-number turbulent boundary layers. Bull. of the Am. Physical. Soc., 59:20. BAPS.2014.DFD.D26.2
Tinney, C.E., Baars, W.J. (2014) Where are the nonlinearities in jet noise? J. Acoust. Soc. Am., 136, 2101. doi: 10.1121/1.4899558
Rojo, R.M., Tinney, C.E., Baars, W.J., Ruf, J.H. (2013) Near-field/far-field study of the end-effects regime produced by large area ratio nozzles. J. Acoust. Soc. Am., 134, 4057 (invited). doi: 10.1121/1.4830804
Baars, W.J., Tinney, C.E. (2013) Transient unsteadiness of SWBLI in an axisymmetric geometry. Bull. of the Am. Physical. Soc., 58:18. BAPS.2013.DFD.A4.7
Fievet, R., Tinney, C.E., Silva, D., Baars, W.J. (2013) High fidelity measurements in the far-field of a Mach 3 jet. Bull. of the Am. Physical. Soc., 58:18. BAPS.2013.DFD.D24.7
Baars, W.J., Tinney, C.E. (2012) Scaling model for nonlinear supersonic jet noise. Bull. of the Am. Physical. Soc., 57:17. BAPS.2012.DFD.D24.8
Baars, W.J., Tinney, C.E. (2009) Higher-order system analysis. Bull. of the Am. Physical. Soc., 54:19. BAPS.2009.DFD.PB.7
Media
Baars, W.J. (2012) Supersonic flow research: getting a doctorate degree in the United States of America. Leonardo Times, J. Soc. of Aerospace Eng. Students `Leonardo da Vinci’, year 16:3, 8-9, Delft University of Technology, link: online magazine