comparison tubes 中文意思是什麼
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Comparison and selection of schemes of construction of sunken tunnel tubes in drydocks
模型在日照港總平面設計方案可行性研究中的應用 -
A comparison of the electric field distribution in a cable termination with several different stress control tubes is presented
摘要利用時域有限元方法分析了含不同應力控制管時的電纜終端電場分佈。 -
A comparison of the electric field distribution in cable terminations with several different stress control tubes is investigated under impulse voltage
利用暫態有限元方法分析了含不同應力控制管時的電纜終端沖擊電壓下的電場分佈。 -
According to the result showed at 280nm and at 490nm, in the comparison of whether protein absorption top and sugar quantity top overlapped, glycoproteins would be detected preparatorily, and as a result, tubes in two distinct areas had glycoproteins by this method. proteins were precipitated with trichloroaceticacid and with cold acetone, and glycoprotein was determined from sds - gel
再從各收集管的收集液中，用三氯乙酸沉澱蛋白法、冷丙酮沉澱蛋白法相結合濃縮、制備蛋白樣品，進行sds ? page ，對sds膠進行pas糖鏈染色鑒定糖蛋白，並從茶樹葉分級蛋白中準確地鑒定出兩個區域的收集管中含有多種糖蛋白。 -
The dome - top, plane - top ; large - reflective bowl, small - reflective bowl ; wild - degree bowl, narrow - degree bowl ; deep assembling, middle assembling and low assembling led tubes were simulated and experimentally measured for comparison. some conclusions can be drawn that the simulation results fit the experimentation results well in the light distribution. this testified that monte carlo method is one of the effective tools for led light ' s optical design
根據驗證和分析比較不同led光學結構的需要，製作了有代表性的19種管型的樣管，分別對其模擬模擬輸出配光曲線圖和測試，在模擬光子數設定為10000000個， 1000次反射無出射視為光子被吸收等參數條件下，得到模擬和測試所得配光曲線在一定的誤差范圍內是相同的。 -
A novel strip - coil - baffle structure used to enhance heat transfer and support the tube bundle for a tube - shell heat exchanger is proposed. the new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger. the numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted. the computational domain consists of two strip - coil sleeved tubes and two bare tubes oppositely placed at each corner of a square. the velocity and temperature fields in such strip - coil - baffled channel are simulated using fluent software. the effects of the strip - coil - baffles on heat transfer enhancement and flow resistance in relation to the reynolds number are analyzed. the results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40 ? to 55 ? in comparison with a bare tube bundle ; meanwhile, higher flow resistance is also accompanied. it is believe that the strip - coil - baffled heat exchanger should have promising applications in many industry fields
介紹了一種用於強化管殼式換熱器殼側傳熱和支撐管束的螺旋折流片新型結構，該結構是對換熱器管子相間地套上螺旋折流片以產生旋渦流動.研究模型是在正方形布置的4個管子中的2個對角管子套上螺旋折流片后形成的通道，利用fluent軟體對該上述四管通道模型的流場和溫度分佈情況進行了數值模擬;分析了四管通道模型中螺旋折流片對強化傳熱和流動阻力隨雷諾數的變化關系的影響.算例結果顯示該新型結構可比相同尺寸的光管通道中的情形傳熱系數提高約40 ? 55 ? ，同時也將伴隨較高的流動阻力.可以相信螺旋折流片式換熱器將會在許多工業領域有良好的應用前景 -
Abstract : a novel strip - coil - baffle structure used to enhance heat transfer and support the tube bundle for a tube - shell heat exchanger is proposed. the new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger. the numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted. the computational domain consists of two strip - coil sleeved tubes and two bare tubes oppositely placed at each corner of a square. the velocity and temperature fields in such strip - coil - baffled channel are simulated using fluent software. the effects of the strip - coil - baffles on heat transfer enhancement and flow resistance in relation to the reynolds number are analyzed. the results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40 ? to 55 ? in comparison with a bare tube bundle ; meanwhile, higher flow resistance is also accompanied. it is believe that the strip - coil - baffled heat exchanger should have promising applications in many industry fields
文摘:介紹了一種用於強化管殼式換熱器殼側傳熱和支撐管束的螺旋折流片新型結構，該結構是對換熱器管子相間地套上螺旋折流片以產生旋渦流動.研究模型是在正方形布置的4個管子中的2個對角管子套上螺旋折流片后形成的通道，利用fluent軟體對該上述四管通道模型的流場和溫度分佈情況進行了數值模擬;分析了四管通道模型中螺旋折流片對強化傳熱和流動阻力隨雷諾數的變化關系的影響.算例結果顯示該新型結構可比相同尺寸的光管通道中的情形傳熱系數提高約40 ? 55 ? ，同時也將伴隨較高的流動阻力.可以相信螺旋折流片式換熱器將會在許多工業領域有良好的應用前景 -
And last, the experimental data are treated by using a program, and a comparison between the theoretical and the experimental results of the condensation heat transfer coefficient outside horizontal tubes with annular fins is conducted
最後，編寫了計算程序，進行數據處理，求得管外冷凝表面傳熱系數的理論值與實驗值，對二者進行了比較，分析了誤差產生的原因，提出了冷凝器的改進方法。 -
Then the pro ? models have been input into pro ? m, an automatic mesh generating software, to create the mesh system for numerical simulation. after defining some proper boundary condition, the flow analysis have been performed through the use of star ? d, a powerful cfd software. with some careful analysis of the simulation results and comparison of the two models, some guiding principles for the design optimization of the compressor inlet turning tubes have been concluded
論文主要工作包括：通過對壓氣機進氣彎管幾何形狀的深入分析，利用三維建模軟體pro / e生成其三維幾何模型；利用網格自動生成工具pro - am ，根據pro / e生成的三維幾何模型生成了數值模擬所用的計算網格；對壓氣機進氣彎管內部流動進行了詳細的氣動計算，對原進氣彎管與新型進氣彎管的計算結果做了對比分析，對其結構的優化設計提出了指導原則。
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