氣體空氣焰 的英文怎麼說
中文拼音 [qìtǐkōngqìyàn]
氣體空氣焰
英文
gas-air flame-
Numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation. it becomes clear that fire source modeling is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modeling of the fire source. the flame area which has developed from the fire source is an area of chemical reaction caused by combustion. even if grids in the vicinity of the fire source are made fine, it was difficult to simulate the heat generation area with consideration to this chemical reaction through using a method for setting the heat release rate simply on the fire source surface. therefore, we proposed a method adopting the knowledge on flame shape under the longitudinal ventilation and incorporating it into numerical simulation and it showed a good agreement with the experimental results. it was shown through experiments in a tunnel with longitudinal ventilation that the hot current developed toward the tunnel center downwind from the fire source near a wall. the cause was investigated by numerical simulation and it became clear from the results that the spiral air by the fire plume created a vortex in the crevice between the wall and the plume
運用cfd進行數字模擬，以了解縱向通風隧道內熱煙氣流的特性.通過模擬發現對火源進行模擬非常重要，熱煙氣流特性受火源位置的影響很大，並且對火源模擬方法很敏感.火源生成的火焰區是燃燒引起的化學反應區域.即使火源附近的木垛排列完好，也很難在考慮這些化學反應條件下模擬熱生成區域.建議考慮縱向通風隧道內火焰形狀並對它進行數字模擬.模擬結果與試驗結果非常吻合.試驗證明，在縱向通風隧道內，熱煙氣流從靠近墻體火源處順風向隧道中心蔓延.數字模擬結果發現，火災羽流造成的螺旋上升空氣會在墻體和羽流之間形成一個渦流區Abstract : numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation. it becomes clear that fire source modeling is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modeling of the fire source. the flame area which has developed from the fire source is an area of chemical reaction caused by combustion. even if grids in the vicinity of the fire source are made fine, it was difficult to simulate the heat generation area with consideration to this chemical reaction through using a method for setting the heat release rate simply on the fire source surface. therefore, we proposed a method adopting the knowledge on flame shape under the longitudinal ventilation and incorporating it into numerical simulation and it showed a good agreement with the experimental results. it was shown through experiments in a tunnel with longitudinal ventilation that the hot current developed toward the tunnel center downwind from the fire source near a wall. the cause was investigated by numerical simulation and it became clear from the results that the spiral air by the fire plume created a vortex in the crevice between the wall and the plume
文摘:運用cfd進行數字模擬，以了解縱向通風隧道內熱煙氣流的特性.通過模擬發現對火源進行模擬非常重要，熱煙氣流特性受火源位置的影響很大，並且對火源模擬方法很敏感.火源生成的火焰區是燃燒引起的化學反應區域.即使火源附近的木垛排列完好，也很難在考慮這些化學反應條件下模擬熱生成區域.建議考慮縱向通風隧道內火焰形狀並對它進行數字模擬.模擬結果與試驗結果非常吻合.試驗證明，在縱向通風隧道內，熱煙氣流從靠近墻體火源處順風向隧道中心蔓延.數字模擬結果發現，火災羽流造成的螺旋上升空氣會在墻體和羽流之間形成一個渦流區Some liquid will vaporize and some of the vapor will be carried into the flame through the air inlets
有一些液體會蒸發，而有一些則會通過空氣入口進入火焰。Abstract : during the reduction of iron ore - coal pellet in air, the combustible gas generated from the reduction in pellet is burnt onto the firing surface around the pellet. between the pellet surface and the firing surface, ther e is such mixing gas containing the combudstible gas and burnt gas. it m ay b e sure that the iron ore - coal pellet is no oxidized in the week oxidizing atmos phere. the heat released by combusition on the firing surface is fast tranfered i nto the pellet, and the self - heating reduction of iron ore - coal pellet may occu r
文摘:鐵礦-煤球團在空氣中能夠還原的原因是：從球團排出的可燃性氣體在球面附近的火焰面上燃燒，在火焰面內側是氧化性較弱的可燃性氣體和燃燒產物的混合物，鐵礦-煤球團在弱氧化性氣氛中具有抗氧化性；在火焰面燃燒放出的熱量向球團傳遞，進行自熱還原A number of special blitz operations were also organised on safety of working - at - height, scaffold, container handling, gas welding and flame cutting, fire and chemical, and plant and machinery
我們亦組織了多次突擊檢查行動，以檢查高空工作、棚架、貨櫃處理、氣體焊接及火焰切割、防火和化學品，以及工業裝置及機械的安全。A number of special blitz operations and campaigns were also organised on the safety of work at height, scaffold, container handling, gas welding and flame cutting, fire and chemical, and plant and machinery
我們亦組織了多次突擊檢查行動，以檢查高空工作、棚架、貨櫃處理、氣體焊接及火焰切割、防火和化學品，以及工業裝置及機械的安全。Air quality. stationnary sources emissions. determination of an index for the gaseous organic content. flame ionization method
空氣質量.固定源輻射.氣體有機化合物含量指數的測定.火焰電離子化法Campaigns were also launched to promote and publicise the factories and industrial undertakings ( safety management ) regulation, the factories and industrial undertakings ( loadshifting machinery ) regulation, the factories and industrial undertakings ( gas welding and flame cutting ) regulation and the safety of working at height. stalls at the fun day of the catering industry safety award scheme award presentation ceremony
年內，我們再次舉辦這兩項計劃，並推出了多項推廣和宣傳《工廠及工業經營（安全管理）規例》 、 《工廠及工業經營（負荷物移動機械）規例》 、 《工廠及工業經營（氣體焊接及火焰切割）規例》及高空工作安全的活動。We also accredited 13 confined spaces safety training courses, 12 loadshifting machinery safety training courses and 16 gas welding and flame cutting safety training courses
我們亦認可了13個密閉空間安全訓練課程、 12個負荷物移動機械安全訓練課程及16個氣體焊接及火焰切割安全訓練課程。Campaigns were also launched to promote and publicise amendments to the factories and industrial undertakings ( safety officers and safety supervisors ) regulations, the factories and industrial undertakings ( gas welding and flame cutting ) regulation, the importance of rest breaks at work and the safety of working at height
年內，我們再次舉辦這兩項計劃，並推出了多項活動推廣和宣傳有關《工廠及工業經營（安全主任及安全督導員）規例》的修訂、 《工廠及工業經營（氣體焊接及火焰切割）規例》 、工作休息時段的重要性及高空工作的安全。分享友人