Using time splitted algorithm , the convection term is solved with tvd method and the chemical reaction is dealt with elementary reaction model 對(duì)流項(xiàng)和化學(xué)反應(yīng)項(xiàng)采用時(shí)間分裂法,分別用tvd格式和基元反應(yīng)模型進(jìn)行處理。
Ruburning with coal has been proved a effective low nox emission combustion technology 。 in this ph . d thesis , the reaction mechanisms of reburning have been investigated , and the homogeneous and heterogeneous reduction of nox have been analyzed in details . a series of reburning experiments have been carried out on an entrained - flow reactor , in which two kinds of coals with different particle sizes have been used 本文對(duì)煤粉再燃過(guò)程中,揮發(fā)分及煤焦的基元反應(yīng)途徑和反應(yīng)機(jī)理進(jìn)行了詳細(xì)分析;在攜帶爐實(shí)驗(yàn)臺(tái)上進(jìn)行了神華煤、邢臺(tái)煤在1200與1300 、四種煤粉細(xì)度、三種再燃燃料比和三種再燃區(qū)初始氧量,共144個(gè)實(shí)驗(yàn)工況下的再燃實(shí)驗(yàn)。
As an example of 3d program with high quality mesh , proper boundary & initial conditions and ingenious simulation strategy , numerical analysis of flow - fields in hylte nozzle and cavity of dfcl running on fuel system of ( nf3 + h2 + he ) / d2 and experimental stagnation parameters , has been performed using vibration - state - unbalance & rotation - state - balance model , and a detailed kinetic model including 111 one - way primary reactions expressing by finite rate equations between thirteen species . the coefficients of transportation used in the analysis are calculated by employing the formulas of molecular kinetics 新建立的三維程序在高質(zhì)量網(wǎng)格、合理的初邊值以及模擬方案基礎(chǔ)上,采用振動(dòng)非平衡?轉(zhuǎn)動(dòng)平衡模型和有限速率方程表達(dá)的111個(gè)單向基元反應(yīng)的化學(xué)動(dòng)力學(xué)模型,利用分子運(yùn)動(dòng)理論計(jì)算的輸運(yùn)系數(shù)和工程實(shí)驗(yàn)采用的滯止參數(shù),對(duì)運(yùn)轉(zhuǎn)( nf _ 3 + h _ 2 + he ) d _ 2燃料體系的df激光器的hylte噴管和光腔進(jìn)行了數(shù)值模擬分析。