多次元flameletモデリングとゼロエミッションシステムの燃焼数値シミュレーションへの適用

渡邊 裕章

doi:10.20619/jcombsj.64.209_222

書誌事項

タイトル別名

Multi-dimensional Flamelet Modeling and Application to Combustion Simulation on a Zero-emission System

公開日: 2022-08-15

DOI

10.20619/jcombsj.64.209_222

公開者: 一般社団法人日本燃焼学会

説明

<p>This paper describes the multi-dimensional flamelet modeling and the application to a combustion simulation by means of a large-eddy simulation (LES) on an oxy-fuel combustion system. The two-dimensional flamelet formulation for a three-feed combustion system can be simplified with the three types of the quasi-two-dimensional flamelet formulations (Q2DF) by post-processing of the conventional one-dimensional flamelet solutions. The Q2DF models are derived based on the treatments regarding the third stream; the diluent stream is mixed with the oxidizer stream and/or with the fuel stream, giving rise to the three models called Q2DF1, Q2DF2, and Q2DF3. LES with the three models were performed to analyze the characteristics of each model. It was found that the differences among the three models became apparent as the mixture fraction of the inactive third stream (Z₃) evolved larger, otherwise the three models gave almost the same accuracy. In the larger Z₃ region, its scalar dissipation rate played an important role and the mixing state (premixed or non-premixed) of the third stream with the other streams should be carefully considered. In addition, in the latter part of this paper, the three-dimensional flamelet modeling for coal-ammonia co-combustion is also described.</p>

収録刊行物

日本燃焼学会誌

日本燃焼学会誌 64 (209), 222-229, 2022-08-15

一般社団法人日本燃焼学会

キーワード

詳細情報詳細情報について

CRID: 1390012423823461760

DOI: 10.20619/jcombsj.64.209_222

ISSN: 24241687; 13471864

本文言語コード: ja

データソース種別

JaLC

抄録ライセンスフラグ: 使用不可

書き出し

問題の指摘