カスタマーログイン 0 ショッピングカート
ホーム 書籍 電子書籍 ジャーナル 参考文献と会報 著者、編集者、レビュー者 A-Z商品インデックス
Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN 印刷: 1-56700-135-1

DEVELOPMENT OF EXPERIMENT/SIMULATION INTERFACES FOR HYBRID TURBULENT RESULTS ANALYSIS VIA THE USE OF DNS

要約

In this numerical study, a possible interface between experiment and simulation is developed. The main goal is to be able to interface experimental time histories, measured at some few locations, with the inlet section of a time varying numerical simulation of a spatially developing flow. The study is performed through two-dimensional DNS of a mixing layer by defining a virtual interface within the computational domain. First, necessary criteria to insure "realistic" inflow conditions for numerical simulations are analyzed. It is then shown that even if the Reynolds stresses and spectral distributions are properly taken into account, a correct representation of the space-time coherence of the flow organization is essential to obtain a good interface. Using the Linear Stochastic Estimation (LSE) of the whole inlet velocities from only three spatial monitoring locations, "realistic" downstream velocity fields can be generated. This realism is found to be valuable as well for turbulent statistics as for instantaneous snapshots of vorticity of the flow field. Two main applications of the present interface are then possible: experimental unsteady conditions can be used to drive a DNS, while the numerical simulation can be helpful as a tool for dynamical signal processing analysis of experimental data.
ホーム Begell Digital Portal Begellデジタルライブラリー ジャーナル 書籍 電子書籍 参考文献と会報 著者、編集者、レビュー者 A-Z商品インデックス 価格及び購読のポリシー Begell Houseの概要 連絡先 Language English 中文 Русский 日本語 Português Deutsch Français Español