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- The jet flow radiation computational method of axis-symmetry nozzle and rectangle nozzle are also discussed. 研究了軸對稱噴管和二元矩形噴管噴氣流輻射的計算方法。
- There are two flow forms in the stepped spillways , which are skimming flow and jet flow. 1:研究表明台階式溢洪道的水流流態可以分為跌落流和滑行流兩種流態。
- A polyphase flow numerical analog analysis has been made of the high pressure jet flow field, by way of CFD. 利用計算流體動力學(FD)方法對高壓水射流流場進行了多相流的數值模擬分析。
- A polyphase flow numerical analog analysis has been made of the high pressure jet flow field,by way of CFD. 利用計算流體動力學(CFD)的方法對高壓水射流流場進行了多相流的數值模擬分析。
- The article calculates unsteady initial shock wave produced by jet flow in launcher. 文中對貯運發射箱內燃氣射流產生的初始衝擊波流場進行了非定常數值模擬。
- And the jet flow field of 4 nozzles of a PDC bit is tested by simulating the bottomhole flow field of the bit. 在模擬PDC鑽頭井底流場的條件下,對PDC鑽頭4個噴嘴的射流流場進行了測試。
- The nondimensional curve of speed individual maximum decrease along jet flow was obtained for the first time. 首次得出不同空燃比下速度分量的最大值沿射流長度衰減的無因次曲線。
- The high speed jet flow thus formed, guided by the rotating nozzel, scours repeatedly on the tank bottom at an angle of 3. 為防止原油儲罐中沉澱物沉積,國外一些公司採用了皮託管射流器系統進行清渣除淤工作。
- Super automatic flowing mortar is studied for gaining low adiabatic temperature rise,high fluidity,pumpability and low cost. 為獲得絕熱溫升較低、高流動性、適用於泵注和成本低廉的補強注漿材料,研製出超級自流平砂漿,經實際工程使用效果良好。
- The article calculates unsteady jet flow in concentric canister launcher with three different clearances between inner canister and outer canister. 文中針對三種不同內、外筒間隙的同心筒發射裝置,對其發射過程中發射筒內的燃氣射流流場進行了非定常數值模擬。
- The reasons were studied based on upstream and downstream height difference and jet flow elevation design, as well as energy dissipation mechanism. 從上下游堰頂高差、挑流平台高程設計及消能等方面,分析了結構物產生破壞的原因。
- During cleaning of a mortar spraying machine, the revolving screw-conveyor of the machine crushed a worker's foot and shank. 一名工人清潔一部砂漿噴射機時,被機器的旋轉式螺旋輸送機壓碎了足部及腿部。
- In this paper,fluid mechanics was applied to analyze the flow field of swirling jet flow and guide the twisting and untwisting of pneumatic splice. 用流體力學分析旋轉射流的流場,來指導氣流捻接的解捻與加捻。
- The influence of density ratio on the characteristic frequency of coherent structure on the centreline of low Re number free round jet flow has been investigated with Dual PDA. 採用激光粒子動態分析儀研究了低雷諾數時密度比對自由圓射流近噴嘴區軸線相干結構特徵頻率的影響。
- Numerical simulation and cold status test of jet flow of coherent jet oxygen lance and common oxygen lance for arc furnace steelmaking have been carried out by CFX5.7.1 Software. 用CFX5.;7
- Supersonic jet flow structure was analyzed at different work condition. Based on FW-H equation and LES model, under expanded supersonic jet noise was simulated. 分析了不同工作狀態下的超聲速噴流結構,採用LES模擬了欠膨脹狀態的超聲速噴流流場的激波結構,對該狀態進行了非定常計算,結合FW-H方程模擬了噴口處氣動聲輻射頻譜圖。
- Thrust vectoring jet flow interferes the flow over aircrafts,drives its aerodynamic load to vary,and may potentially influence the controllability of aircrafts. 矢量推力噴流對飛行器繞流具有干擾作用,引起飛行器氣動載荷變化,對飛行器操縱性也有潛在影響。
- By means of superposing ring turbulent jet flow with confluent flow, the mathematical model of flow-field of wind-curtain dust-catching fan is established, which provi... 將環形紊流射流與匯流進行疊加,建立了風幕集塵風機流場的數學模型,為風幕集塵風機的應用奠定了理論基礎。
- It can break rock to drill by using multiple nozzles to form multiple jet flow, and have efflux energy distribution characteristic of local conformity and integer stack. 採用多孔噴嘴形成多股射流組合,使射流能量分佈具有局部集中和總體疊加包絡的特點,能夠有效地實現破岩鑽孔。
- Study on super automatic flowing mortar 超級自流平砂漿研究