CFD仿真在轴流式灭火风机流场优化设计中的应用.pdf

20 10 38 10 33 : 1005- 0329 ( 20 10) 10 - 0033- 06 CFD 仿真在轴流式灭火风机流场优化设计中的应用 , , (, 100083) : NS, FVM k, , , , , , : ; ; ; : TD441+ . 2 : A do:i 10. 3969 / . issn. 1005- 0 329. 2010. 10. 007 Application of CFD Simulation in the Optimum Design of Flow Field in the Axialflow Firefighting Fan CHU Shuanglei, YU Guosheng, Q IN Ru ihong ( Schoo l of T echno logy, Be i ing Forestry U n iversity, Be i ing 1000 83, Ch ina) Abstract: The m odeling and s mi u la tion analyse based on the N S equation in the threedmi ens iona l turbu lent flow o f ax ia lflow f iref ighting fan have been comp le ted by u sing the me thod o f com puta tiona l flu id dynam ics ( CFD ) . k wt ow ay mode lw as u sed to smi ulate the turbu lent flow based on the f in ite vo lum e m ethod. T he threedmi ensional flow pa ttern o f the inte rnal flow f ield un der the design ope ra ting cond itions of the ax ia lflow firef ighting fan w as conc luded. T he flow characteristics, the a ir flow veloc ity and the pressure d istribution o f ax ia lflow f iref ighting fan w as analyzed. T he e ffectiv e mi provem ent and optmi um aerodynam ic de sign of the interna l w ind duct has been realized based on CFD flow f ie ld smi u lation. The resu lts show that coneshaped et duct w ith gr id plate can effectively increase outlet v elocity, mi prove interna l flow, and bette r m eet the design requ irem ents. K ey words: ax ialflow f irefighting fan; com putationa l flu id dynam ics ( CFD ) ; smi ulation; optmi um design 1 , !!! CFD , , , CF