Publications
125 results found
McKeon BJ, Morrison JF, 2004, Self-similarity of velocity spectra in boundary layers at high Reynolds number, Barcelona, Advances in turbulence X, Publisher: CIMNE, Pages: 17-20
McKeon BJ, Lambert S, Sherwin SJ, et al., 2004, Active flow control by vorticity flux from a dimpled surface, Poitiers, First European Forum on Flow Control, Publisher: Univ. Poitiers, Pages: 37-39
McKeon BJ, Lambert S, Sherwin SJ, et al., 2004, Active dimples for flow control, Barcelona, Advances in turbulence X, Publisher: CIMNE, Pages: 581-584
McKeon BJ, Morrison JF, 2004, Evidence for a mixing transition in fully-developed pipe flow, Symposium on fluid mechanics in the spirit of Tony Perry, Kingston, ON, Canada
Dunn DC, Morrison JF, 2003, Anisotropy and energy flux in wall turbulence, JOURNAL OF FLUID MECHANICS, Vol: 491, Pages: 353-378, ISSN: 0022-1120
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- Citations: 27
McKeon BJ, Li J, Jiang W, et al., 2003, Pitot probe corrections in fully developed turbulent pipe flow, MEASUREMENT SCIENCE AND TECHNOLOGY, Vol: 14, Pages: 1449-1458, ISSN: 0957-0233
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- Citations: 52
McKeon BJ, Morrison JF, Jiang W, et al., 2003, Revised log-law constants for fully-developed turbulent pipe flow, IUTAM symposium on Reynolds Number Scaling in turbulent flow, Princeton, NJ, 11 - 13 September 2002, Publisher: Kluwer, Pages: 265-270
Heenan AF, Morrison JF, 2002, Turbulent boundary layers on axially-inclined cylinders. II. Circumferentially averaged wall-pressure wavenumber-frequency spectra, EXPERIMENTS IN FLUIDS, Vol: 32, Pages: 616-623, ISSN: 0723-4864
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- Citations: 4
Morrison JF, Jiang W, McKeon BJ, et al., 2002, Reynolds number dependence of streamwise velocity spectra in turbulent pipe flow, PHYSICAL REVIEW LETTERS, Vol: 88, ISSN: 0031-9007
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- Citations: 38
Morrison JF, Jiang W, McKeon BJ, et al., 2002, Reynolds number dependence of streamwise velocity spectra in turbulent pipe flow, Physical Review Letters, Vol: 88, Pages: 2145011-2145014, ISSN: 0031-9007
Streamwise velocity spectra in turbulent pipe flow were presented for Reynolds numbers up to 5.7 × 106. Fluctuating velocity measurements were made using standard hot-wire techniques. Spectra were presented in premultiplied form on linear-log axes. Results indicated that spectra at all positions showed discrete separate peaks.
Heenan AF, Morrison JF, 2002, Turbulent boundary layers on axially inclined cylinders. Part 1. Surface-pressure/velocity correlations, EXPERIMENTS IN FLUIDS, Vol: 32, Pages: 547-557, ISSN: 0723-4864
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- Citations: 9
Dunn DC, Morrison JF, 2002, Effects of anisotropy on energy transfer in near-wall turbulence, Barcelona, Advances in turbulence IX, proceedings of the 9th European turbulence conference, Southampton, Publisher: CIMNE, Pages: 599-602
Morrison JF, Smits AJ, 2002, Reynolds-number dependence of streamwise velocity fluctuations in turbulent pipe flow, Reno, Nevada, 40th Aerospaces Sciences Meeting & Exhibit, Publisher: AIAA
McKeon BJ, Li J, Jiang W, et al., 2002, Additional measurements and analysis of high Reynolds number fully-developed pipe flow, Barcelona, Advances in turbulence IX, Publisher: CIMNE, Pages: 833-836
Flynn GA, Morrison JF, Mabey DG, 2001, Buffet alleviation on swept and unswept wings at high incidence, JOURNAL OF AIRCRAFT, Vol: 38, Pages: 368-378
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- Citations: 3
Sharma AS, Limebeer DJN, McKeon BJ, et al., 2001, Stabilising Control Laws for the Incompressible Navier-Stokes Equations using Sector Stability Theory, 3rd AIAA Flow Control Conference, Publisher: AIAA
McKeon BJ, Jiang W, Morrison JF, et al., 2001, New measurements and analysis of the mean velocity in high Reynolds number fully-developed pipe flow, 54th meeting of the American Physical Society Division of Fluid Dynamics, San Diego, CA, USA
Morrison JF, Smits AJ, 2001, Reynolds-number dependence of streamwise velocity fluctuations in turbulent pipe flow, Stockholm, Turbulence and Shear Flow Phenomena, TSFP-2, Publisher: Universitetservice US AB, Pages: 43-48
Hunt JCR, Morrison JF, 2000, Eddy structure in turbulent boundary layers, EUROPEAN JOURNAL OF MECHANICS B-FLUIDS, Vol: 19, Pages: 673-694, ISSN: 0997-7546
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- Citations: 180
Dunn DC, Morrison JF, 2000, Analysis of coherent structures in turbulent channel flow using the orthogonal wavelet representation., 8th European Turbulence Conference, Publisher: INT CENTER NUMERICAL METHODS ENGINEERING, Pages: 671-674
Flynn GA, Morrison JF, Mabey DG, 1999, Buffet alleviation on an unswept wing at hign incidence
Buffeting measurements have been made on a semi-rigid, unswept wing with a GA(W)-l section, at Reynolds numbers, Rc.; up to 106. Results show that a permeable surface vented to an otherwise airtight plenum, adjacent to an unsteady separation, reduces the severity of the buffet excitation. However, the separation line is highly two-dimensional, producing “stall cells” and “foci” of surface-normal vorticity. Qualitative evidence suggests that the buffet excitation parameter increases rapidly when the size of the stall cell approximately doubles and the projected area of separated flow adjacent to the wing increases abruptly. The use of a segmented model ensures that the wing is sufficiently flexible to retain the first bending-moment mode shape. It also allows the position of the permeable surface to be moved to follow the mean separation line approximately. Measurements on the buffet excitation parameter show significant attenuation: this can be by as much as two thirds for optimally aligned permeable surfaces. However, when the permeable-surface sections are placed under attached flow in a region of large favourable pressure gradient, they cause separation to occur further upstream leading to an increase in buffet excitation by a similar degree.
Flynn GA, Morrison JF, Mabey DG, 1999, Buffet alleviation on an unswept wing at hign incidence
© 1999 by the American Institute of Aeronautics and Astronautics Inc.Buffeting measurements have been made on a semi-rigid, unswept wing with a GA(W)-l section, at Reynolds numbers, Rc.; up to 106. Results show that a permeable surface vented to an otherwise airtight plenum, adjacent to an unsteady separation, reduces the severity of the buffet excitation. However, the separation line is highly two-dimensional, producing “stall cells” and “foci” of surface-normal vorticity. Qualitative evidence suggests that the buffet excitation parameter increases rapidly when the size of the stall cell approximately doubles and the projected area of separated flow adjacent to the wing increases abruptly. The use of a segmented model ensures that the wing is sufficiently flexible to retain the first bending-moment mode shape. It also allows the position of the permeable surface to be moved to follow the mean separation line approximately. Measurements on the buffet excitation parameter show significant attenuation: this can be by as much as two thirds for optimally aligned permeable surfaces. However, when the permeable-surface sections are placed under attached flow in a region of large favourable pressure gradient, they cause separation to occur further upstream leading to an increase in buffet excitation by a similar degree.
Sherwin SJ, Karmanos GS, Morrison J, 1999, Large eddy simulation using unstructured spectral/hp elements, Second AFOSR International Conference on Direct Numerical Simulation and Large Eddy Simulation Rutgers, New Jersey, USA
Flynn GA, Morrison JF, 1999, Passive control of buffet excitation, Pages: 63-68
Heenan AF, Morrison JF, 1998, Passive control of pressure fluctuations generated by separated flow, AIAA JOURNAL, Vol: 36, Pages: 1014-1022, ISSN: 0001-1452
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- Citations: 70
Heenan AF, Morrison JF, 1998, Split-film probes in recirculating flow, MEASUREMENT SCIENCE AND TECHNOLOGY, Vol: 9, Pages: 638-649, ISSN: 0957-0233
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- Citations: 3
Heenan AF, Morrison JF, 1998, Passive control of backstep flow, Experimental Thermal and Fluid Science, Vol: 16, Pages: 122-132, ISSN: 0894-1777
Benaissa A, Ewing D, Morrison JF, et al., 1998, Effects of wall proximity on round jets, ADVANCES IN TURBULENCE VII, Vol: 46, Pages: 47-50
Westbury PS, Sandham ND, Morrison JF, 1998, Bursts and subgrid-scale energy transfer in turbulent wall-bounded flow, ADVANCES IN TURBULENCE VII, Vol: 46, Pages: 23-26
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- Citations: 3
Heenan AF, Morrison JF, 1996, Passive control of pressure fluctuations generated by separated flow
Measurements of wall-pressure fluctuations have been made in the flow behind a backward-facing step, with a permeable reattachment surface. Different configurations are tried, the most successful producing a reduction in peak rms pressure fluctuations of about 13% and a reduction in drag of about 9%. Spectra show that most of the attenuation occurs at low frequencies, and in particular, the "flapping" frequency (n = 0.1) is effectively removed. The main reason for this appears to be that the permeable surface impedes the upstream convection of disturbances produced at reattachment. Structural modifications to the pressure-fluctuation field appear to be confined to the region upstream of mean reattachment.
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