Publications
125 results found
Hanson RE, Lavoie P, Naguib AM, et al., 2010, Control of transient growth induced boundary layer transition using plasma actuators, Seventh IUTAM Symposium on Laminar-Turbulent Transition, Publisher: Springer, Pages: 183-188
Naguib AM, Morrison JF, Zaki TA, 2010, On the relationship between the wall-shear stress and transient-growth disturbances in a laminar boundary layer, Physics of Fluids, Vol: 22, Pages: 054103-1-054103-13
Morrison JF, 2010, Summary of Conference, Minnowbrook VI 2009 Workshop on Flow Physics and Control for INternal and External Aerodynamics, Publisher: NASA
Morrison JF, 2010, Turbulent Boundary Layers, Encyclopedia of Aerospace Engineering, Editors: Blockley, Shyy, Publisher: Wiley online library, ISBN: 978-0-470-68665-2
Birch DM, Morrison JF, 2010, Large Roughness Effects in Channel Flow, IUTAM Symposium on the Physics of Wall-Bounded Flows on Rough Walls, Publisher: SPRINGER, Pages: 167-+
Birch DM, Morrison JF, 2009, Effects of very-large roughness in turbulent channel flow, Pages: 661-664, ISSN: 0930-8989
The streamwise velocity statistics in fully-developed rough-wall channel flow have been investigated over grit- and mesh-type surface topologies. The flow was demonstrated to be fully-developed and two-dimensional up to the fourth moment of velocity. Though the flow over both surface types appear to exhibit a limited logarithmic region, the regions of inner and outer scaling over the mesh surface fail to overlap. The influence of the spanwise periodicity of the mesh upon the outer scaling is discussed.
Morrison JF, Qubain A, 2009, Control of an axisymmetric turbulent wake by a pulsed jet, Pages: 225-228
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- Citations: 7
Morrison JF, Qubain A, 2009, Control of an axisymmetric turbulent wake by a pulsed jet, 12th EUROMECH European Turbulence Conference, Publisher: SPRINGER-VERLAG BERLIN, Pages: 225-228, ISSN: 0930-8989
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- Citations: 6
Birch DM, Morrison JF, 2009, Effects of very-large roughness in turbulent channel flow, 12th EUROMECH European Turbulence Conference, Publisher: SPRINGER-VERLAG BERLIN, Pages: 661-664, ISSN: 0930-8989
Naguib AM, Morrison JF, 2008, Low-order flow-field estimation using surface-shear-stress information in a transitional boundary layer
As an initial step in the design of an estimator for the control of transient growth in laminar boundary layers, a POD analysis is performed on a DNS database using the wall-normal velocity and vorticity appearing in the linearised perturbation equations. Eigenvalue spectra show that while most of the energy resides in the first seven spanwise Fourier modes, only two POD modes are required for the capture of virtually all the energy. Linear Stochastic Estimation is also used to provide estimation of the POD coefficients using the spanwise component of the surface shear stress. Overall, the agreement between actual and estimated POD modes is good for both the wall-normal velocity and vorticity, although it is worse for the less dominant modes. Copyright © 2008 by the American Institute of Aeronautics and Astronautics, Inc.
Rosenblatt F, Morrison JF, Iannucci L, 2008, Modelling electroactive polymer (EAP) actuators: electro-mechanical coupling using finite element software, Conference on Electroactive Polymer Actuators and Devices (EAPAD 2008), Publisher: SPIE-INT SOC OPTICAL ENGINEERING, ISSN: 0277-786X
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- Citations: 2
Morrison JF, 2007, The interaction between inner and outer regions of turbulent wall-bounded flow, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol: 365, Pages: 683-698, ISSN: 1364-503X
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- Citations: 49
McKeon B J, Morrison J F, 2007, Asymptotic scaling in turbulent pipe flow, Philos Transact A Math Phys Eng Sci, Vol: 365, Pages: 771-781, ISSN: 1364-503X
Dearing SS, Lambert S, Morrison JF, 2007, Flow control with active dimples, The Aeronautical Journal, Vol: 111, Pages: 705-714
Udovidchik N, Morrison JF, 2006, Investigation of active dimple actuators for separation control, Pages: 820-828
Flow separation is generally associated with a loss of some kind; loss of lift, drag increase, pressure recovery losses, etc. Therefore, the control of separation lias been studied for many years to improve the aerodynamic efficiency. The present investigation is focused on the understanding of the effect that a combination of active dimples has on flow separation In both laminar, and, more importantly, turbulent boundary layers, with an aim to understand the guiding or defining parameters affecting the structure of the flow excited by vortices shed from dimple actuators. The dimples were arranged in the form of a spanwise periodic perturbation across the boundary layer prior to separation, creating counter-rotating vortices and producing a three dimensional spanwise variation near the separation line. This forces an entrainment of high momentum fluid into the surface leading to a delay in flow separation.
Dearing S, Arthur G, Morrison JF, et al., 2006, Electroactive polymers for flow control, Pages: 47-54
The design of EAP actuators, in the form of active dimples for flow control, is described. Manufacturing techniques have been adopted from MEMS processing. The final design comprises 10mm dimples manufactured on 10mm silicon wafers; the electrodes consist of graphite powder. Initial electromecanical tests have been carried out and experimental data correlate well with theory. The results show how the response is sensitive to the input signal of the driving voltage and material properties such as the Shore A number. © The Institute of Engineering and Technology.
Dearin S, Arthur G, Morrison JF, et al., 2006, Electroactive polymers for flow control, Pages: 47-54
The design of EAP actuators, in the form of active dimples for flow control, is described. Manufacturing techniques have been adopted from MEMS processing. The final design comprises 10mm dimples manufactured on 100mm silicon wafers; the electrodes consist of graphite powder. Initial electromechanical tests have been carried out and experimental data correlate well with theory. The results show how the response is sensitive to the input signal of the driving voltage and material properties such as the Shore A number. © The Institute of Engineering and Technology.
Morrison JF, Dearing CC, Arthur GG, et al., 2006, Fluid flow control using boundary layer control, WO2006040532
Arthur GG, McKeon BJ, Dearing SS, et al., 2006, Manufacture of micro-sensors and actuators for flow control, Microelectronic Engineering, Vol: 83, Pages: 1205-1208, ISSN: 0167-9317
Arthur GG, McKeon BJ, Dearing SS, et al., 2005, Manufacture of micro-sensors and actuators for flow control, 31st International Conference on Micro- and Nano-Engineering, Publisher: ELSEVIER SCIENCE BV, Pages: 1205-1208, ISSN: 0167-9317
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- Citations: 17
Dunn DC, Morrison JF, 2005, Analysis of the energy budget in turbulent channel flow using orthogonal wavelets, COMPUTERS & FLUIDS, Vol: 34, Pages: 199-224, ISSN: 0045-7930
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- Citations: 14
Lambert S, Morrison JF, 2005, Fundamental study of active dimples, Virginia, 4th International Symposium Turbulence and Shear Flow Phenomena, Publisher: Univ. Virginia
Morrison JF, 2005, Boundary layers under strong distortion: an experimentalist's view, Prediction of turbulent flows, Editors: Hewitt, Vassilicos, Publisher: Cambridge Univ Pr, Pages: 163-206, ISBN: 9780521838993
By presenting current theory on flow prediction, this book addresses the needs of experienced practitioners and researchers in fluid dynamics.
Morrison JF, McKeon BJ, Jiang W, et al., 2004, Scaling of the streamwise velocity component in turbulent pipe flow, JOURNAL OF FLUID MECHANICS, Vol: 508, Pages: 99-131, ISSN: 0022-1120
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- Citations: 168
Li JD, McKeon BJ, Jiang W, et al., 2004, The response of hot wires in high Reynolds-number turbulent pipe flow, MEASUREMENT SCIENCE AND TECHNOLOGY, Vol: 15, Pages: 789-798, ISSN: 0957-0233
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- Citations: 13
McKeon BJ, Li J, Jiang W, et al., 2004, Further observations on the mean velocity distribution in fully developed pipe flow, JOURNAL OF FLUID MECHANICS, Vol: 501, Pages: 135-147, ISSN: 0022-1120
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- Citations: 208
Westbury PS, Dunn DC, Morrison JF, 2004, Analysis of a stochastic backscatter model for the large-eddy simulation of wall-bounded flow, EUROPEAN JOURNAL OF MECHANICS B-FLUIDS, Vol: 23, Pages: 737-758, ISSN: 0997-7546
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- Citations: 7
Pesce G, Morrison JF, 2004, A wall-shear-stress based algorithm for the control of turbulent wall flow, Barcelona, Tenth European Turbulence Conference, 29 June - 2 July 2004, Trondheim, Norway, Publisher: CIMNE, Pages: 477-480
Udovidchik N, Morrison JF, 2004, Separation control using active dimples, 1st European forum on flow control, Poitiers, France, 2004
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