火災模化 的英文怎麼說
中文拼音 [huǒzāimóhuà]
火災模化
英文
fire modeling-
This brings much difficulties to safety evacuation and fire protection and fire extinguish. life is precious, the main focus of the fire science and technology is the human beings life and the most important of the study is the egress safety of the people
大量新型建築材料和建築製品的使用使建築火災對人們造成更大的威脅和傷害，從而使高層建築火災的規模和危害程度發生了重大變化，這給安全疏散和防火、滅火帶來了許多困難。On the actual ward spot, because with the variety of the season and the day and night, the environment factors is variational and with the difference of the ward spot, the environment factors is also different, based on the frame of decision level fusion this paper apply neural network and fuzzy inference technology to achieving multi - sensors fire detection system, which can endue different sensors with different weight for adapting the variation of environment according to the actual things. we test this method applied to the multi - sensors fire detection system by simulating and attain the anticipative result
針對實際監護現場，環境因素會隨著季節以及晝夜變化而變化，而且在不同的監控現場，環境因素也不相同的問題本文在決策層融合的框架下，利用神經網路和模糊推理技術相結合來實現多傳感器火災探測，根據實際情況，賦予不同的傳感器不同的權重系數以適應環境變化，通過模擬驗證了此種方法應用於多傳感器火災探測系統可達到預期效果。On the basis of the safety system engineering theory. applying the dow fire & explosion index and the normal stability gauss mathematical diffusion model etc., combining with the practice of mouping port, the hazards during the handling and storage of liquid chemicals in bulk have been analyzed and the risks of fire explosion and leakage ( including water pollution and water pollution ) have been assessed. taking into account of insufficient consideration of the human factor in the dow fire & explosion index, the soft compensation coefficient has been raised
本文以安全系統工程為理論基礎，運用道氏火災爆炸指數法、平均運動方程組以及常穩態高斯數學擴散模型，結合牟平港散化運輸、裝卸的實際，對牟平港散化儲運的火災爆炸危險性和毒物泄漏危險性（包括水污染性和大氣污染性）進行了定性和定量的分析評價。在評價程序上，針對道氏火災爆炸指數法中對人為因素和管理水平等考慮不足的問題，提出了軟補償系數的概念，找出了散化碼頭日常監督管理工作的重點。At present, the study of the fire safety evacuation in the world mainly focus on : ( 1 ) the importance of the model of egress and the ability of modeling predict a obvious tendency of the study is that there will be more behavior details included in the model in the future ; ( 2 ) the influence of the smoke and its toxicity to people which focus on the study of the influence of toxic gases such as carbon monoxide to people who exposed in fire, the test of the visibility of directional and exit signs, the behavior of the occupants in fire and the time they response to the fire ; ( 3 ) the application of the evacuation model in fire safety design, the constitute of performance - based code and building evaluating the purpose of the study of people ' s evacuation is to improve the fire safety design and cut down the number of casualties
人的生命是寶貴的，因此，世界各國的消防科研主要以生命安全為主，重點研究火災中人員的安全疏散，並提出新的性能化防火設計和性能化防火設計規范，從建築設計入手而保證建築防火設計的可靠性和建築物的火災安全性。目前，國際上對火災安全疏散的研究主要集中在以下方面： （ 1 ）疏散模型的開發和模型預測能力的改進疏散模型方面的研究一個明顯的趨勢就是未來的模型將包含更多的行為細節，注重人的行為的因素。 （ 2 ）火災中人員反應及毒性和煙的影響這一研究主要集中在一氧化碳等有毒氣體對暴露在火場中人員的影響，疏散指示標志的可見度測試，以及火災中人員的行為和對火災的反應等方面的研究。Secondly, the paper simplified the calculating model of fume in the high tunnel. took the fume restriction into account, the paper provided some equations to calculate the longitudinal fire ventilation. finally, the paper calculated three examples : the zhongliangshan tunnel and the left route of the yanmenguan tunnel
最後，本文將公路隧道火災的通風模型進行簡化，考慮火災煙流阻力（節流阻力，摩擦阻力，火風壓）的影響，提出了縱向式火災通風計算的方程式，並對中梁山隧道的左右線、雁門關隧道的右線進行了實例計算。The author found that the stable heat source presumption or the t2 design fire is also not agree with the experimental data. the simulation of fire in an atrium has shown that the new model is more accurate to predict the fire scenarios than any other models that include a general mathematical model of fires
該模型充分考慮了火區燃燒與蔓延情況對煙氣流動數值模擬的影響，從而可以更加準確地反映出火源釋熱率的變化等因素的影響，改善了中庭火災煙氣流動數值模擬的精度與可靠性。2 ) simulation of the heat transfer across the walls : there are two methods, finite thickness solid method and semi - infinite solid method, to simulate the heat transfer across the walls when the temperature gradient along the height and the width of the wall is ignored
在火災環境下，忽略高度和寬度方向的溫度變化，採用一維熱傳導方程，建築、圍護結構適用兩種傳熱模型:有限厚度模型和半無限大厚度模型。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In order to increase the accuracy and the widely use of fire spreading model, the paper base on the change state of temperature of the calculus on fire area, use the law of energy conservation, it can give the change of the temperature field ' s mathematical model on the fire area
摘要為了提高林火蔓延模型的準確性和通用性，文中把火場看作一個動態溫度場，並從火場上任一微元體任一時刻溫度變化狀態出發，應用能量守恆定律，建立火災區域溫度場動態變化模型。According to the facts of chemical spill accidents in waterway transport, systematic analysis is made on the suitable dispersion models and source strength calculation models of multiple spilled substance, resource and environment respectively, so as to decide the poison and fire & explosion danger area of an accident through the way of dispersion simulation. to resolve the problem to the calculation of spill amount from tanks, calculation formulas on various types of tanks were worked out ; at the same time, research is carried out on the source strength calculation of mixtures with regard to the possible spillage of chemical mixture in waterway transport. for the sake of convenient application, a computer software for the simulation of dangerous area is developed which can provide great assistance to the decision - making of emergency response and reach the target of reducing the damage of the life, property and environment to the smallest degree
根據水運化學品泄漏事故的具體實際，針對各種泄漏物質、泄漏源和環境條件研究了各自適用的擴散模式和源強計算模型，以便通過擴散模擬確定事故的毒害和火災爆炸危險區域；為解決儲罐泄漏量計算困難的實際問題，推導了適用各型儲罐、液艙的泄漏量計算公式；針對化學品水路儲運泄漏事故中泄漏物質可能會以混合物形式存在的情況，探討了混合物的蒸氣釋放源強計算；為方便實用，開發了蒸氣擴散危險區域模擬計算機軟體，從而為事故應急決策提供了有力的輔助支持，以達到盡可能減少人員傷亡和財產損失，減輕環境污染的目標。In this paper, performance - based fire safety design concept was adopted to analyze fire safety objective of a underground bowling alley should achieve, fire scenarios were designed and the performance of water sprinkler and mechanical smoke evacuation system was studied by using zone model
摘要採用性能化防火設計的思想，分析了某地下保齡球館火災熱煙氣安全需求，設計了可能發生的火災場景，使用區域模擬技術研究了保齡球館水噴淋和機械排煙系統的有效性。This thesis is based on the theory of the unexpected release of energy in safety system engineering and applies the relevant principle in risk assessment. three kinds of methods, such as dow fire & explosion index, ici / mond index, grey clustering procedure and three mathematical models, such as bleve accidental model, vce accidental model, the model of leakage & diffusion of posionous gases are applied to the risk asssessment of lpg terminal
本文以安全系統工程中的能量意外釋放理論為理論基礎，根據安全評價的相關原理，綜合運用三種方法：道氏火災爆炸指數法、 ici mond法、灰色聚類法以及三個模型： bleve事故傷害模型、 vce事故傷害模型、有毒氣體泄漏擴散模型，對液化石油氣碼頭的儲運進行了風險綜合評價。We proposed an improved simulated annealing algorithm with neighbor function based on self - optimization of scale parameter. furthermore incorporating disaster - modification and the improved annealing into genetic algorithm, an improved genetic - annealing algorithm is proposed. in order to solve the deceptive minimum problem, an improved evolutionary strategy combined with similarity detection and improved mutation operator
提出了鄰域尺度函數自尋優的模擬褪火演算法，結合遺傳演算法，引入災變運算元，提出了改進遺傳模擬褪火演算法；為了解決尋優過程中的最小欺騙問題，我們提出了相似性檢測，結合改進的適應值無關變異運算元，提出了基於相似性檢測和適應值無關變異運算元的進化策略演算法。Ad hoc working group on mathematical fire modeling ad hoc
數學火災模化工作組3. regularity of some mechanics index such as compressive strength, constitutive relationship of stress to strain and modulus changing with temperature, standing time, cooling and curing process after cool were studied by test. corresponding regressive equation was obtained with large quantity of data
試驗研究了火災高溫后考慮靜置時間影響的混凝土抗壓強度、應力-應變本構關系及彈性模量等力學性能指標隨混凝土受火溫度、靜置時間、冷卻和冷卻后的養護方式的變化規律，通過對大量試驗數據的處理，給出了相應的擬合回歸公式。Abstract : some possible factors which can lead to fire and explosion accidence of reserving tank of liquefied petroleum gas is analyzed quantitatively by using the fuzzy fault tree analysis method based on distribution of possibility
文摘:應用基於可能性分佈的模糊事故樹分析法，對引發液化石油氣儲罐發生火災爆炸事故的可能因素進行了定量分析。Abstract : this article studies on mode and behavior of oil tank fire ， analyzes regular pattern of variation ， and puts forward effective measare
文摘:本文對油罐火災模式的火行為進行了探討，分析了其變化規律，並提出了處理措施。Parameters randomness of parametric model of fully - developed compartment fire
全盛期室內火災參數化模型的參數隨機性Based on analyzing some fha models and some performance - based computer models, this thesis presents the main mathematic model and basic frame of the performance - based model ; develops the smoke model that can analyze the fluid of smoke in buildings fires ; makes a performance - base design for a building with a large atrium. 1
性能化設計工具通過利用計算機模型對建築火災的發展進行全面的模擬，這類計算機模型由於涉及專業多，流程復雜，一般需要一個主要的基本框架和演算法，然後以此為基礎才能兼顧各個方面的需求建立各種專業、各種功能的子模型。分享友人