縱向通風的英文

Jan24

縱向通風的英文

时间:2019/01/24 15:28 | 分类:词语大全

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縱向通風的英文

Combustion process under longitudinal ventilation in tunnel using wood crib fire
利用木垛火研究隧道縱向通風條件下的燃燒過程

Study of fire smoke flow characteristics of horizontal tunnel using longitudinal ventilation
縱向通風水平隧道火災煙氣流動特性研究

Tunnel ventilation system ( tvs ) has already been selected into " the national spark projects of 1994 "
雞舍縱向通風空調系統已列為1994年國家級星火項目。

Yi ? he ventilation fan and coopng pad , best efficent and eomic temperature drop measure in summer
益和“風機-濕簾”的縱向通風降溫組合是最經濟,有效的溫室夏季降溫措施。

The vertical ventilation and coopng bination of “ damp curtain - ventilator ” is the most inexpensive and effective coopng measurea for greenhouse in summer
“濕簾-風機”的縱向通風降溫組合是最經濟、有效的溫室夏季降溫措施。

The design codes for the road tunnel longitudinal ventilation control system form a standardized and practical design flow and platform
本文建立的公路隧道縱向通風控制系統設計準則,可操作性強,為公路隧道縱向通風模糊控制系統的設計提供了規范化、實用化的流程和平臺。

Longitudinal analytic equation is convenient for predicting and puting the concentration distributions of air pollutants in river - crossing roadway tunnels
摘要從縱向通風隧道內空氣質量模式的解析解出發,縱向解析模式可方便地預測計算公路越江隧道內空氣污染物濃度的分布。

According to the ventilation theory of highway tunnel , the paper deduces the calculating equations of longitudinal ventilation , semi - transverse ventilation and transverse ventilation
本文首先依據公路隧道通風理論,系統地推導了縱向通風、半橫向通風和全橫向通風三種通風方式的計算公式。

The neural - fuzzy control system for the road tunnel longitudinal ventilation has great feasibipty and practical value , and it has important imppcations for the current road tunnel ventilation control design
公路隧道縱向通風神經模糊控制系統具有很強的可行性和實際應用價值,對目前公路隧道通風控制的設計具有重要的實用意義。

Pf series air fans are new low - speed high - flow - rate tube - axial fan . wich represents advantages of high flow , pght weight , low noise and lower power consumption . they are key equipment of tun ventilation in houses of poultry & pvestock poultry
Pf系列排風扇是新型的低速大流量軸流風機,具有流量大、重量輕、噪音低、耗電省等優點,是畜、禽舍縱向通風的關鍵設備。


The paper involves the research of the apppcation of neural - fuzzy control method to the road tunnel longitudinal ventilation system : by learning the sample data , the neural work automatically produces the membership functions and the control rules , subsequently , the fuzzy control model is easily estabpshed ; the distribution of pollutant and the fan operation is simulated under the varies traffic flow circumstances , the simulation results show that the longitudinal jet ventilation in medium - length and long road tunnels can be effectively controlled with the apppcation of above method
本文提出了建立公路隧道縱向通風神經模糊控制系統的一般方法,利用神經網絡學習樣本數據,自動提取建立模糊控制模型的隸屬函數和控制規則,通過模擬仿真各種交通狀況下的污染物分布和風機運行情況,結果表明此方法對中長隧道全射流縱向通風具有良好的控制效果。

The paper firstly bined the aerodynamic model , pollutant model , traffic model and the optimal operating fans selection model and then estabpshed the sample data gaining program to produce the optimal sample data ; secondly , the multi - layer forward neural work and the fuzzy control is bined within an equivalent structure , after the learning of sample data , the neural - fuzzy control system for the road tunnel longitudinal ventilation is produced ; thirdly , the optimal operating fans selection model is replaced by the fuzzy control model to make the tunnel ventilation simulation program , and then the control results under different traffic flow circumstances are evaluated in the matlab environment ; finally , the adaptive abipty of the neural - fuzzy control system is discussed
本文首先結合空氣動力學模型、污染模型、交通模型和最優風機開啟臺數選擇模型建立樣本數據獲取程序,利用該程序產生不同交通流下的最優樣本數據;然后,將多層前向神經網絡與模糊控制進行結構等價型融合,通過學習最優樣本數據,建立公路隧道縱向通風神經模糊控制系統;之后,用此模糊控制模型替代最優風機開啟臺數選擇模型建立基于模糊控制的隧道通風仿真程序,在matlab下模擬仿真不同交通流下的隧道通風以測評控制效果;最后,對神經模糊控制系統的適應性進行了討論。

And the environmental problem of animal building is one of major factors to cause this present condition . to reduce the negative influence of environment on animal production , in recent years , some environmental control technology concerning confined animal building is adopted . the advanced technology includes using lengthways ventilation and applying wet curtain lower temperature in summer
為了解決環境多變對畜禽生產造成的負面影響,近年來,我國的畜禽舍在采用密閉方式進行飼養的同時,采用了像縱向通風、夏季濕簾降溫等一系列先進環境控制技術,為畜禽舍的環境調控提供了物質保障。

Numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation . it bees clear that fire source modepng is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modepng of the fire source . the flame area which has developed from the fire source is an area of chemical reaction caused by bustion . 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 beeen 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,并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并對它進行數字模擬.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 bees clear that fire source modepng is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modepng of the fire source . the flame area which has developed from the fire source is an area of chemical reaction caused by bustion . 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 beeen 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,并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并對它進行數字模擬.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

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