| タイトル | Simulations of Spray Reacting Flows in a Single Element LDI Injector With and Without Invoking an Eulerian Scalar PDF Method |
| 本文（外部サイト） | http://hdl.handle.net/2060/20120013786 |
| 著者（英） | Liu, Nan-Suey; Shih, Tsan-Hsing |
| 著者所属（英） | Ohio Aerospace Inst.|NASA Glenn Research Center |
| 発行日 | 2012-08-01 |
| 言語 | eng |
| 内容記述 | This paper presents the numerical simulations of the Jet-A spray reacting flow in a single element lean direct injection (LDI) injector by using the National Combustion Code (NCC) with and without invoking the Eulerian scalar probability density function (PDF) method. The flow field is calculated by using the Reynolds averaged Navier-Stokes equations (RANS and URANS) with nonlinear turbulence models, and when the scalar PDF method is invoked, the energy and compositions or species mass fractions are calculated by solving the equation of an ensemble averaged density-weighted fine-grained probability density function that is referred to here as the averaged probability density function (APDF). A nonlinear model for closing the convection term of the scalar APDF equation is used in the presented simulations and will be briefly described. Detailed comparisons between the results and available experimental data are carried out. Some positive findings of invoking the Eulerian scalar PDF method in both improving the simulation quality and reducing the computing cost are observed. |
| NASA分類 | Aeronautics (General) |
| レポートNO | E-18351
NASA/TM-2012-217676 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/241350 |
