Physics of Separated Flows — Numerical, Experimental, and Theoretical Aspects: DFG Priority Research Programme 1984–1990 PDF
Preview Physics of Separated Flows — Numerical, Experimental, and Theoretical Aspects: DFG Priority Research Programme 1984–1990
Physics of Separated Flows- Numerical, Experimental, and Theoretical Aspects Edited by Klaus Gersten Notes on Numerical Fluid Mechanics (NNFM) Volume 40 Series Editors: Ernst Heinrich Hirschel, Munchen Kozo Fujii, Tokyo Bram van Leer, Ann Arbor Keith William Morton, Oxford Maurizio Pandolfi, Torino Arthur Rizzi, Stockholm Bernard Roux, Marseille Volume 8 Vectorization of Computer Programs with Applications to Computational Fluid Dynamics (W. Gentzsch) Volume 12 The Efficient Use of Vector Computers will Emphasis on Computational Fluid Dynamics (W. ScMnauer I W. Gentzsch, Eds.) Volume 13 Proceedings of the Sixth GAMM-Conference on Numerical Methods in Fluid Mechanics (D. Rues I W. Kordulla, Eds.) Volume 14 Finite Approximations in Fluid Mechanics (E. H. Hirschel, Ed.) Volume 17 Research in Numerical Fluid Dynamics (P. Wesseling, Ed.) Volume 18 Numerical Simulation of Compressible Navier-Stokes Flows (M. W. Bristeau I R. Glowinski I J. Periaux I H. Viviand, Eds.) Volume 20 Proceedings of the Seventh GAMM-Conference on Numerical Methods in Fluid Mechanics (M. Deville, Ed.) Volume 22 Numerical Simulation of the Transonic DFVLR-F5 Wing Experiment (W. Kordulla, Ed.) Volume 23 Robust Multi-Grid Methods (W. Hackbusch, Ed.) Volume 26 Numerical Solution of Compressible Euler Flows (A. Dervieux I B. van Leer I J. Periaux I A. Rizzi, Eds.) Volume 27 Numerical Simulation of Oscillatory Convection in Low-Pr Fluids (B. Roux, Ed.) Volume 28 Vortical Solution of the Conical Euler Equations (K. G. Powell) Volume 29 Proceedings of the Eighth GAMM-Conference on Numerical Methods in Fluid Mechanics (P. Wesseling, Ed.) Volume 30 Numerical Treatment of the Navier-Stokes Equations (W. Hackbusch I R. Rannacher, Eds.) Volume 31 Parallel Algorithms for Partial Differential Equations (W. Hackbusch, Ed.) Volume 32 Adaptive Finite Element Solution Algorithm for the Euler Equations (R. A. Shapiro) Volume 33 Numerical Techniques for Boundary Element Methods (W. Hackbusch, Ed.) Volume 34 Numerical Solutions of the Euler Equations for Steady Flow Problems (A. Eberle I A. Rizzi I H. E. Hirschel) Volume 35 Proceedings of the Ninth GAMM-Conference on Numerical Methods in Fluid Mechanics (J. B. Vos I A. Rizzi I I. L. Ryhming, Eds.) Volume 36 Numerical Simulation of 3-D Incompressible Unsteady Viscous Laminar Flows (M. Deville IT.-H. LS I Y. Morchoisne, Eds.) Volume 37 Supercomputers and Their Performance in Computational Fluid Mechanics (K. Fujii, Ed.) Volumes 1 to 7, 9 to 11, 15, 16, 19 and 21 are out of print. The addresses of the Editors and further titles of the series are listed at the end of the book. Physics of Separated Flows - Numerical, Experimental, and Theoretical Aspects DFG Priority Research Programme 1984-1990 Edited by Klaus Gersten I I Vleweg Mathematics Subject Classification: 76-XX All rights reserved © Springer Fachmedien Wiesbaden 1993 Originally published by Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig! Wiesbaden in 1993 Softcover reprint of the hardcover 1s t edition 1993 No part of this publication may be reproduced, stored in a retrieval system or transmitted, mechanical, photocopying or otherwise, without prior permission of the copyright holder, ISSN 0179-9614 ISBN 978-3-531-07640-9 ISBN 978-3-663-13986-7 (eBook) DOl 10.1007/978-3-663-13986-7 FOREWORD This volume contains 37 contributions in which the research work is summarized which has been carried out between 1984 and 1990 in the Priority Research Program "Physik abgeloster Stromungen" of the Deutsche Forschungsgemeinschaft (DFG, German Research Society). The aim of the Priority Research Program was the inten sive research of the whole range of phenomena associated with separated flows. Physi cal models as well as prediction methods had to be developed based on detailed experi mental investigations. It was in accordance with the main concept of the research program that scientists working on problems of separated flows in different technical areas of application participated in this program. The following fields have been represented in the program: aerodynamics of wings and bodies, aerodynamics of auto mobiles, turbomachinery, ship hydrodynamics, hydraulics, internal flows, heat exchan gers, bio-fluid-dynamics, aerodynamics of buildings and structures. In order to concentrate on problems common in all those areas the emphasis of the program was on basic research dealing with generic geometric configurations showing the fundamental physical phenomena of separated flows. The engagement and enthusiasm of all participating scientists are highly appreciated. The program was organized such that all researchers met once a year to report on the progress of their work. Special thanks ought to go to Prof. E.A. Muller (Gottingen), Prof. H. Oertel jun. (Braunschweig), Dr. W. Schmidt (Dornier), Dr. H.-W. Stock (Dornier) and Dr. B. Wagner (Dornier), who had the functions of referees on those annual meetings. In addition to the annual meetings workshops on special topics have been held regu larly for smaller working groups. The following scientists deserve thanks for having been chairmen of those working groups: Prof. D. Hummel (Three-dimensional separa ted flows), Prof. W. Nitsche (Experimental methods for separated flows), Prof. I. Teipel (Unsteady separated flows), Prof. K. Gersten (Turbulence modelling of separa ted flows). The final scientific symposium of this DFG Program has been held on 17th and 18th February, 1992 at the Ruhr-Universitat Bochum. It is worth mentioning that altogether 195 scientific publications have come out of this Priority Research Program. On behalf of all participating scientists I thank very much the Forschungsgemeinschaft for making available the financial support. Dr. Lachmeier, representing the DFG, deserves very special thanks, because without his assistance, his scientific and adminis trative knowledge and his enthusiasm this research program would not have been so successful. K. Gersten v CONTENTS page K.GERSTEN Overview............................................................................................................. 1 TWO-DIMENSIONAL FLOWS WITH FIXED SEPARATION POINT R. FBlEDBlCH, M. ARNAL Turbulent backward-facing step flow.................................................................... 7 M. PEBle, C. TROPEA Turbulent flow over surface-mounted obstacles in plane and axisymmetric geometries. ... ... ...... ......... ... ........ .... ............ ...... ...... ...... ....... ..... ...... ... ... ................ 18 J. CORDES, W. RODI, N.H. CHO Calculation ofseparated flows with a two-layer turbulence model................... ........ 27 H.H. FERNHOLZ, M.P.G. JAROCH, J.M.R. GRAHAM An evaluation of the discrete vortex method as a model for the flow past a flat plate normal to the flow with a large wake splitter plate.................................... 37 H.H. FERNHOLZ, P. DENGEL, M. HESS Skin friction measurements in two-and three-dimensional highly turbulent flows with separation. ........... ......... ... ...... ........ .... ............ ...... ......... ......... .............. 38 P.M. WAGNER, H.H. FERNHOLZ Near-wall structure in separated flows..... ...... ............. ....... .... ........ ..... ....... .... ........ 39 B. RUCK, B. MAKIOLA Flow separation over the inclined step................................................................... 47 B. RUCK, B. MAKIOLA Dynamics of micrometer-sized particles in a separated step flow............................. 56 VI J.DOHMANN The structure of the drag reduced turbulent flow over a backward -facing step - An experimental study.......................................... ...................................... 66 TWO-DIMENSIONAL FLOWS WITH PRESSURE INDUCED SEPARATION H. BESTEK, K. GRUBER, H. FASEL Direct numerical simulation ofunsteady separated boundary-layer flows over smooth backward-facing steps....................................................................... 73 M. MORZYNSKI, F. THIELE Global stability analysis oftwo-dimensional flow with closed separation bubbles................................................................................................................ 81 D. ALTHAUS, W. WtiRZ Experimental investigation oflaminar separation bubbles.... ........ ............... ...... ...... 89 B. SCHALAU, F. THIELE Computation of separated flow using the boundary-layer equations............... ...... ... 99 W.H.ISAY, J. MARZI Method for calculating the flow around airfoils including local separation bubbles and massive separation.... ........ .... ............ ............ ........ ....... .... ........... ....... 107 J .A. LIESER, B. EWALD Turbulence modeling for compressible separated flow............................................. 108 W. NITSCHE, C. HABERLAND On turbulent separated flows in axisymmetric diffusers..... ........ ....... ...... ......... ....... 116 K. GERSTEN, J. KLAUER, D. VIETH Asymptotic analysis oftwo-dimensional turbulent separating flows..... ..... .... ...... .... 125 P. LARSEN, U. KERTSCHER Turbulent separating flow over humps in an open channel...... .............. ...... .... ...... ... 133 VII UNSTEADY FLOWS WITH SEPARATION D. GEROPP, A. LEDER The flow structure in the wake and separated region of plane and axisymme- tric bodies.............................................. .................. .................................... ........ 142 D. GEROPP, G. SCHUMANN A new model ofturbulence for separated flow behind bluffbodies............................ 150 I. TEIPEL An investigation of the separated flow past an oscillating circular cylinder........................ ........................ ............................................................... 158 B. FAGO, O. MAHRENHOLTZ Vortex resonant vibrations of circular and square cylinders..................................... 165 G.H. DIBELIUS, E. AHLERS Experimental analysis of the unsteady turbulent boundary-layer flow with separation on turbine blades.............. ........................ ............................................ 174 K. AFFELD, K. SCHICHL, A. ZIEMANN Flow separation in artificial heart valves.............. .... ........ ....... ... ...... ....... ..... ....... ... 184 THREE-DIMENSIONAL FLOWS PAST BLUFF BODIES AND CIRCULAR CYLINDERS H. WENGLE, H. WERNER Large-eddy simulation of turbulent flow over sharp-edged obstacles in a plate channel........................................................................................................ 192 H.H. FERNHOLZ, G. JANKE, M. KALTER, M. SCHOBER On the separated flow behind a swept backward-facing step................................... 200 H. EISENLOHR, H. ECKELMANN Flow around finite lengthed cylinders at low Reynolds number: End effects and their origins................................................................................................... 208 N. HOLSCHER, H.-J. NIEMANN On the flow around finite circular cylinders in turbulent shear flows........................ 216 VIII N. HOLSCHER, H.-J. NIEMANN Non-parametric identification of a multiple aerodynamic pressure admit- tance................................................................................................................... 225 K. GERSTEN, A. BECKER, T. DEMMER Experimental investigation ofthe wake past bluff bodies...... ...... ........................ .... 233 H.-D. PAPENFUSS, P. DlLGEN Three-dimensional separated flow around automobiles with different rear profile: application of the zonal method............................................ ....... ............... 241 THREE-DIMENSIONAL FLOWS WITH VORTEX DOMINATED SEPARATION U. DALLMANN, W. KORDULLA, H. VOLLMERS, B. SCHULTE-WERNING Analyis of the changing topological structures of three-dimensional sepa- rated flows........................................................................................................... 249 M. FIEBIG, N.K. MITRA Flow structure and heat transfer in channels with wing-type vortex gene- rators................................................................................................................... 257 H.E. GALLUS, M.D. SCHULZ, C.A. POENSGEN Experimental investigation of the three-dimensional separated flow in an annular compressor cascade........................................... ....................................... 265 U. GANZER, R. KELM Laser measurements ofrotational flows for the validation of Euler-codes... .............. 273 S. KOMMALLEIN, D. HUMMEL LDA-investigations of the separated flow over slender wings................................... 275 H.-CHR.OELKER, D. HUMMEL Aerodynamic investigations on close-coupled canard configurations... ..................... 283 SUBJECT INDEX...... ............ ............ ...... ............ .................. ...... .................. ..... 291 IX
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