# Proceedings of the 1987 Summer Program

#### I. Stochastic Decomposition/Chaos/Bifurcation Group

- Overview
- Stochastic estimation of conditional eddies in turbulent channel flow.

*R. J. ADRIAN, P. MOIN and R. D. MOSER* - A low dimensional dynamical system for the wall layer.

*N. AUBRY and L. R. KEEFE* - Self similarity of two point correlations in wall bounded turbulent flows.

*J.C. R.HUNT, P. MOIN, R. D. MOSER and P.R. SPALART* - Ejection mechanisms in the sublayer of a turbulent channel.

*J. JIMENEZ, P. Morn, R. D. MOSER and L. R. KEEFE*

#### II. K-space Group

- Overview
- EDQNM closure: "A homogeneous simulation to support it," "A quasi-homogeneous simulation to disprove it."

*J. P. BERTOGLIO,**K. SQUIRES and J. H. FERZIGER* - Validation of EDQNM for subgrid and supergrid models.

*P. ORLANDI* - Angular distribution of turbulence in wave space.

*G. COLEMAN, J. H. FERZIGER, J.P. BERTOGLIO* - Big Whorls Carry little whorls.

*J. C. R. HUNT, J. C. BUELL and A. A. WRAY* - Study of one-dimensional spectral dynamic equations of the Reynolds stresses in homogeneous anisotropic turbulence: Application to split-spectrum modeling.

*R. SCHIESTEL* - Modeling scalar flux and the energy and dissipation equations.

*A. YOSHIZAWA*

#### III. Scalar Transport /Reacting Flows Group

- Overview
- Direct numerical simulation of buoyantly driven turbulence.

*WM. T. ASHURST and M. M. ROGERS* - Premixed turbulent flame calculation.

*S. EL-TARRY, C. J. RUTLAND, J. H. FERZIGER and M. M. ROGERS* - Modeling of turbulent transport as a volume process.

*M. J. JENNINGS and T. MOREL* - Analysis of non-premixed turbulent reacting flows.

*A. D. LEONARD and J. C. HILL* - A statistical investigation of the single-point pdf of velocity and vorticity based on direct numerical simulations.

*M. MORTAZAVI, W. KOLLMANN and K. SQUIRES*

#### IV. Reynolds Stress Modeling Group

- Overview
- On local approximations of the pressure-strain term in turbulence models.

*P. BRADWHAW, N. N. MANSOUR and U. PIOMELLI* - Local structure of intercomponent energy transfer in homogeneous turbulent shear flow.

*J. G. BRAUSSER and M. J. LEE* - A general form for the dissipation length scale in turbulent shear flows.

*J.C. R. HUNT, P. S. SPALART and N. N. MANSOUR* - Test code for the assessment and improvement of Reynolds stress models.

*M. W. RUBESIN, J. R. VIEGAS, D. VANDROMME and H. HA MINH* - Reynolds stress models of homogeneous turbulence.

*T.-H. SHIH, N. N. MANSOUR and J. Y. CHEN* - The decay of isotropic turbulence in a rapidly rotating frame.

*C. G. SPEZIALE, N. N. MANSOUR and R. S. ROGALLO* - Evaluation of a theory for pressure-strain rate.

*J. WEINSTOCK, and K. SHARIFF* - Relations between two-point correlations and pressure strain terms.

*M. WOLFSHTEIN and S. K. LELE*

#### V. Turbulence Structure Group

- Overview
- Shear-layer structures in near-wall turbulence.

*A. V. JOHANSSON, P. H. ALFREDSSON and J. KIM* - The simulation of coherent structures in a laminar boundary layer.

*K. BREUER, M. T. LANDAHL and P. S. SPALART* - Conditionally-averaged structures in wall-bounded turbulent flows.

*Y. G. GUEZENNEC, U. PIOMELLI and J. KIM* - Structure of turbulent shear flows.

*A. K. M. F. HUSSAIN, J. JEONG and J. KIM* - Inflectional instabilities in the wall region of bounded turbulent shear flows.

*J. D. SWEARINGEN, R. F. BLACKWELDER and P. S. SPALART* - Active layer model for wall-bounded turbulence.

*M. T. LANDAHL, J. KIM and P. S. SPALART* - Wave-growth associated with turbulent spot in plane Poiseuille flow.

*D. S. HENNINGSON, M. T. LANDAHL and J. KIM*

#### Appendix

- Coherent structure.

*P. BRADSHAW* - Coherent structures - comments on mechanisms.

*J. C. R. HUNT* - Coherent structures and dynamical systems.

*J. JIMENEZ* - Coherent structures and modeling: some background comments.

*S. J. KLINE* - Coherent structures.

*C. G. SPEZIALE*