air-displacement method 中文意思是什麼
air-displacement method
解釋
空氣排代法- air : n 1 空氣，大氣。2 天空，空中。3 微風，和風。4 態度，樣子，風度，氣派；〈pl 〉高傲的架子。5 傳播，...
- displacement : n 1 轉位，移動；取代，置換；（人的）流離失所。2 撤換，免職。3 【機械工程】（活塞）排氣量；【航海...
- method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
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Based on the characteristics of the membrane structures, wind - induced nonlinear coupling dynamic response analysis which can be applied to closed membrane structures is developed and the added air mass the pneumatic stiffness and the acoustical damping of the closed membrane structures are deduced. applying the method to an aeroelastic model of wind tunnel test, the displacement the velocity and the acceleration of corresponding prototype structure in time domain are obtained
本文針對封閉式薄膜結構和敞開式薄膜結構推導了全新的非線性流固耦合風振響應公式，其中耦合因素包括附加空氣質量、氣承剛度和聲致阻尼以及相對運動速度，並將此理論應用於一氣彈模型的計算，獲得了位移、速度、加速度時程以及加速度均方根。 -
There is no thoroughly rounded theory about displacement ventilation system in our country at present and our research begins recently. the study work of this paper will be useful for further optimization design of displacement ventilation system. this dissertation includes five parts. the first part introduces the development of the displacement ventilation and the background of research in domestic and oversea. in the second part, it gives working principle of displacement ventilation system and it ’ s advantages to the mixture ventilation. the study also gives a series of indexes to evaluate displacement ventilation system and specifies air supply terminal device and so on. it is needed to simulate and analyse the velocity field, temperature field and distribution of flow field. this is the third part. the forth part specifies the simulative method for thermal stratification of displacement ventilation system. it gives some factors affecting thermal stratification height such as inlet temperature, inlet velocity, heat transfer of wall body, distance of heat source and so on
本文的研究工作主要包括以下幾個方面的內容: （ 1 ）綜述了國內外相關的研究現狀和研究背景; （ 2 ）簡介了置換通風的工作原理，並分析了它相對于混合通風的優良特性及評價指標、末端裝置等; （ 3 ）對採用置換通風方式房間的溫度場、速度場和氣流分佈進行了模擬計算與分析; （ 4 ）對採用置換通風方式房間的熱力分層高度進行了模擬計算，並分析其影響因素，如:送風溫度、送風速度、圍護結構傳熱和熱源分佈等; （ 5 ）擬合了無量綱熱力分層高度相應于送風溫度t 、送風速度v 、熱源間距離l和圍護結構傳熱q的經驗公式。
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