Imperial College London

ProfessorMichaelLeschziner

Faculty of EngineeringDepartment of Aeronautics

Professor
 
 
 
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Contact

 

+44 (0)20 7594 5061mike.leschziner Website

 
 
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Location

 

CAGB317ACity and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

192 results found

Leschziner MA, Choi H, Choi K-S, 2011, Flow-control approaches to drag reduction in aerodynamics: progress and prospects PREFACE, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol: 369, Pages: 1349-1351, ISSN: 1364-503X

Journal article

Leschziner MA, Lardeau S, 2011, Simulation of slot and round synthetic jets in the context of boundary-layer separation control, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol: 369, Pages: 1495-1512, ISSN: 1364-503X

Journal article

Lardeau S, Tessicini F, Leschziner MA, 2010, Analysis of cyclic events in turbulent flows using recurrence plots, JOURNAL OF TURBULENCE, Vol: 11, Pages: 1-27, ISSN: 1468-5248

Journal article

Pacciani R, Marconcini M, Fadai-Ghotbi A, Lardeau S, Leschziner MAet al., 2009, Calculation of high-lift cascades in low pressure turbine conditions using a three-equation model, Pages: 433-442

A three-equation model has been applied to the prediction of separation-induced transition in high-lift low-Reynolds-number cascade flows. Classical turbulence models fail to predict accurately laminar separation and turbulent reattachment, and usually over-predict the separation length, the main reason for this being the slow rise of the turbulent kinetic energy in the early stage of the separation process. The proposed approach is based on solving an additional transport equation for the so-called laminar kinetic energy, which allows the increase of the non-turbulent fluctuations in the pre-transitional and transitional region to be taken into account. The model is derived from that of Lardeau and Leschziner, which was originally formulated to predict bypass transition for attached flows, subject to a wide range of free-stream turbulence intensity. A new production term is proposed, based on the mean shear and a laminar eddy-viscosity concept. After a validation of the model for a flat-plate boundary layer, subjected to an adverse pressure gradient, the T106 and T2 cascades, recently tested at the von Kármán Institute, are selected as test cases to assess the ability of the model to predict the flow around high-lift cascades in conditions representative of those in low-pressure turbines. Good agreement with experimental data, in terms of blade-load distributions, separation onset, reattachment locations and losses, is found over a wide range of Reynolds-number values. Copyright © 2009 by ASME.

Conference paper

Leschziner MA, Rodi W, Kassinos S, 2009, Special issue: Selected papers from the 7th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements - ETMM7 - Preface, FLOW TURBULENCE AND COMBUSTION, Vol: 83, Pages: 305-306, ISSN: 1386-6184

Journal article

Avdis A, Lardeau S, Leschziner M, 2009, Large Eddy Simulation of Separated Flow over a Two-dimensional Hump with and without Control by Means of a Synthetic Slot-jet, FLOW TURBULENCE AND COMBUSTION, Vol: 83, Pages: 343-370, ISSN: 1386-6184

Journal article

Fishpool GM, Lardeau S, Leschziner MA, 2009, Persistent Non-Homogeneous Features in Periodic Channel-Flow Simulations, 7th International Symposium on Engineering Turbulence Modelling and Measurements, Publisher: SPRINGER, Pages: 323-342, ISSN: 1386-6184

Conference paper

Leschziner M, Li N, Tessicini F, 2009, Simulating flow separation from continuous surfaces: routes to overcoming the Reynolds number barrier, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol: 367, Pages: 2885-2903, ISSN: 1364-503X

Journal article

Wu DKL, Leschziner MA, 2009, Large-Eddy simulations of circular synthetic jets in quiescent surroundings and in turbulent cross-flow, 7th International Symposium on Engineering Turbulence Modelling and Measurements (ETMM7), Publisher: ELSEVIER SCIENCE INC, Pages: 421-434, ISSN: 0142-727X

Conference paper

Fishpool GM, Leschziner MA, 2009, Stability bounds for explicit fractional-step schemes for the Navier-Stokes equations at high Reynolds number, COMPUTERS & FLUIDS, Vol: 38, Pages: 1289-1298, ISSN: 0045-7930

Journal article

Garcia-Villalba M, Li N, Rodi W, Leschziner MAet al., 2009, Large-eddy simulation of separated flow over a three-dimensional axisymmetric hill, JOURNAL OF FLUID MECHANICS, Vol: 627, Pages: 55-96, ISSN: 0022-1120

Journal article

Pacciani R, Marconcini M, Fadai-Ghotbi A, Lardeau S, Leschziner MAet al., 2009, CALCULATION OF HIGH-LIFT CASCADES IN LOW PRESSURE TURBINE CONDITIONS USING A THREE-EQUATION MODEL, 54th ASME Turbo Expo 2009, Publisher: AMER SOC MECHANICAL ENGINEERS, Pages: 433-442

Conference paper

Wu DKL, Leschziner MA, 2008, Large-Eddy Simulations of synthetic jets in stagnant surroundings and turbulent cross-flow, IUTAM Symposium on Flow Control and MEMS, Publisher: SPRINGER, Pages: 127-134, ISSN: 1875-3507

Conference paper

Li N, Leschziner MA, 2007, Large-eddy simulation of separated flow over a swept wing with approximate near-wall modelling, AERONAUTICAL JOURNAL, Vol: 111, Pages: 689-697, ISSN: 0001-9240

Journal article

Tessicini F, Li N, Leschziner MA, 2007, Simulation of separation from curved surfaces with combined LES and RANS schemes, Symposium on Complex Effects in Large Eddy Simulation, Publisher: SPRINGER, Pages: 305-+, ISSN: 1439-7358

Conference paper

Leschziner MA, Li N, Tessicini F, 2007, Computational methods combining large eddy simulation with approximate wall-layer models for predicting separated turbulent near-wall flows, International Symposium on Frontiers of Computational Science, Publisher: SPRINGER-VERLAG BERLIN, Pages: 3-+

Conference paper

Li N, Leschziner MA, 2007, Highly-resolved simulation of flow over a three-dimensional hill, 11th EUROMECH European Turbulence Conference, Publisher: SPRINGER-VERLAG BERLIN, Pages: 407-409, ISSN: 0930-8989

Conference paper

Dejoan A, Leschziner MA, 2007, On the near-wall structure in reverse-flow and post-reattachment recovery regions of separated flow and its equivalence to the structure in wall and free-surface jets, JOURNAL OF TURBULENCE, Vol: 8, Pages: 1-25, ISSN: 1468-5248

Journal article

Tessicini F, Li N, Leschziner MA, 2007, Large-eddy simulation of three-dimensional flow around a hill-shaped obstruction with a zonal near-wall approximation., Int. J. heat and Fluid Flow, Vol: 28, Pages: 894-908

Journal article

Tessicini F, Li N, Leschziner MA, 2007, Simulation of separation from curved surfaces with combined LES and RANS schemes, Complex Effects in Large Eddy Simulation - Lecture Notes in Computational Science and Engineering 56

Book chapter

Dejoan A, Wang C, Leschziner MA, 2006, Assessment of turbulence models for predicting the interaction region in a wall jet by reference to LES solution and budgets, 6th International Symposium on Engineering Turbulence Modelling and Measurements (ETMM6), Publisher: SPRINGER, Pages: 229-255, ISSN: 1386-6184

Conference paper

Tessicini F, Temmerman L, Leschziner MA, 2006, Approximate near-wall treatments based on zonal and hybrid RANS-LES methods for LES at high Reynolds numbers, 6th International Symposium on Engineering Turbulence Modelling and Measurements (ETMM6), Publisher: ELSEVIER SCIENCE INC, Pages: 789-799, ISSN: 0142-727X

Conference paper

Lardeau S, Leschziner MA, 2006, Modeling of wake-induced transition in linear low-pressure turbine cascades, AIAA JOURNAL, Vol: 44, Pages: 1854-1865, ISSN: 0001-1452

Journal article

Lardeau S, Li N, Leschziner MA, 2007, Large Eddy Simulations of Transitional Boundary Layers at High Free-Stream Turbulence Intensity and Implications for RANS Modeling, Journal of Turbomachinery, Vol: 129, Pages: 311-317

Journal article

Dejoan A, Leschziner MA, 2006, Separating the effects of wall blocking and near-wall shear in the interaction between the wall and the free shear layer in a wall jet, PHYSICS OF FLUIDS, Vol: 18, ISSN: 1070-6631

Journal article

Dejoan A, Leschziner MA, 2006, LES studies on the correspondence between the interaction of shear layers in post-reattachment recovery and in a plane turbulent wall jet, 6th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, Publisher: SPRINGER, Pages: 659-+, ISSN: 1382-4309

Conference paper

Tessicini F, Li N, Leschziner MA, 2006, Zonal LES/RANS modelling of separated flow around a three-dimensional hill, 6th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, Publisher: SPRINGER, Pages: 695-+, ISSN: 1382-4309

Conference paper

Leschziner MA, 2006, Modelling turbulent separated flow in the context of aerodynamic applications, Fluid Dynamics Research, Vol: 38, Pages: 174-210, ISSN: 0169-5983

Journal article

Leschziner MA, Wang C, 2006, The asymmetric plane diffuser, FLOMANIA – A European Initiative on Flow Physics Modelling, Notes on Numerical Fluid Mechanics and Multidisciplinary Design, Publisher: Springer, Pages: 203-218

Book chapter

Leschziner MA, Wang C, Jang Y-J, 2006, Modelling generic 2d and 3d separated flows using anisotropy-resolving turbulence closures, in, FLOMANIA – A European Initiative on Flow Physics Modelling, Notes on Numerical Fluid Mechanics and Multidisciplinary Design 94, Publisher: Springer, Pages: 77-84

Book chapter

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