摘要：【中文摘要】 目前在工程實(shí)踐中需要一種簡(jiǎn)單而又準(zhǔn)確的活塞流計(jì)算方法。本文分析了隧道列車活塞風(fēng)特性,在隧道流體場(chǎng)中引入了宏觀動(dòng)量守恒定律,建立了一種新型非恒定流活塞風(fēng)一維解析方程,修正了常規(guī)一維解析方程物理意義不明確的缺陷。利用常規(guī)方法和新型方法分別對(duì)同一個(gè)工況進(jìn)行求解,并將所得結(jié)果與實(shí)測(cè)值進(jìn)行對(duì)比。結(jié)果表明新型活塞風(fēng)解析方法具有較高的精度。 【英文摘要】 A simpler but more precise calculation method for piston fluid is now in great demand in engineering practice.A new one-dimensional analytic equation for unsteady piston wind flow was established based on the analysis of piston wind by tunnel train and consideration of macro momentum conservation law in the tunnel fluid,which modified the physical obscurity of conventional equation.The new and convention methods were used respectively to solve the piston fluid field of the same tunnels,and the solved results were compared with the actual measurements.Thus,the new analytic solution has a higher precision than the conventional one. 【中文關(guān)鍵詞】 活塞風(fēng); 數(shù)值模擬; 流體力學(xué)解析解; 隧道通風(fēng)【英文關(guān)鍵詞】 piston wind; CFD; analytical solution of hydrodynamics; tunnel ventilation