In addition, the heat transfer coefficient in the case of low velocity jet flow in the beginning.
整体而言空间内部与加热板温度随时间的增加，所造成热对流系数逐渐下降。
The mathematical model of plasma arc jet velocity at the exit of orifice logically combines the structural sizes of orifice with the plasma gas flow rate, the temperature of plasma arc at the exit of orifice, intensity of ionization and the force of arc pinch effect, by which the velocity of plasma arc jet can be estimated.
当喷嘴结构参数，离子气流量一定时，等离子弧在喷嘴出口处的温度和电离度的增加能使射流的喷嘴出口速度显著增加，而电磁压缩力使射流的喷嘴出口速度增加得较少。
Using the similarity principle, the jet velocity distribution of oxygen gun was investigated in the process of the oxygen top-blown autothermic smelting nickel-copper concentrate, and its mathematical model was established.
运用相似模化理论，研究了氧气顶吹自热熔炼炉氧枪射流速度分布规律，并建立了相应的数学模型。
Jet'.''or rocket engine as a reaction to the high-velocity rearward ejection of exhaust gases.
高速'。''向后排出的气体的反作用力而向前推动的力量
The forward-directed force developed in a jet or rocket engine as a reaction to the high-velocity rearward ejection of exhaust gases.
推力，侧面压力：喷气发动机或火箭发动机产生的作为高速向后排出的气体的反作用力而向前推动的力量
The forward - directed force developed in a jet or rocket engine as a reaction to the high - velocity rearward ejection of exhaust gases.
要住嘴已来不及了，他立刻感到一种含敌意的反应。
The impact law of the shock pressure generated by flow spacing on the plunge pool base slab and the relations of flow field and velocity field are obtained, it shows that the jet flow impact on the shuck pressure corresponds to that on the velocity field distribution.
给出了水股间距对水垫塘底板的冲击压力的影响规律以及与流场、速度场的关系，发现射流对水垫塘底板的冲击压力特点和速度场的分布特点相对应。
It was shown that radial jet flow of the Rushton turbine along the radial direction is tilted towards the top. Varying the impeller diameter had no effect on either the velocity or turbulent kinetic energy of the impeller stream, but did affects on the input power, shear velocity, pumping capability and radial jet angle.
结果表明，Rushton桨叶产生的径向射流沿径向方向是向上方倾斜的，倾斜角度在5°~6°；在排出区，湍流动能沿径向先增加至一峰值后减小；不同桨叶直径的Rushton桨，无因次化后的速度和湍流动能的大小分布在桨叶附近几乎没有差别，但随着桨叶直径的增大，剪切速率和输入功率减小，射流偏角和排出量增大。
Due to the high velocity jet of water, they form a negative pressure around the room so have a vacuum device, and as a result of the second steam jet flow with the direct contact heat exchange, the vast majority of steam condensing into water, not a small amount of steam and condensate non-condensing gas is also due to high-speed jet of water and friction with each other, mixed and extruded through the diffuser tube to be excluded, so that the formation of higher browser indoor vacuum.
由于喷射水流速很高，于是周围形成负压使器室内产生真空、另外由于二次蒸汽与喷射水流直接接触，进行热交换，绝大部份的蒸汽冷凝成水，少量未被冷凝的蒸汽与不凝结的气体亦由于与高速喷射的水流互相摩擦，混合与挤压，通过扩压管被排除，使器室内形成更高的真空。
Properly changing the shape of the nozzle can reduce the vertical gradient of flow velocity along the jet's axial direction, and thus weaken the intensity of the turbulence which results in reduction of jet noise.
根据喷注噪声产生原理，理论分析了适当改变喷口形状，使沿喷注轴向流速在垂直方向的梯度减小，可使湍流发声的声源强度减弱，从而使喷注噪声降低。
Some important conclusions are presented with a great deal of foundational experiments based on theory of electrochemistry and growth method of electro-deposit.1 Results show that limiting current density of electroforming will be improved from 10~20A/dm2 to 390A/dm2 due to high mass transfer velocity and small diffusion layer thickness.2 Locality of electroforming is determined by electric field distribution and strength. Its closely relevant with voltage. The more voltage is, the higher electric field strength and distribution area. Other parameters of electroforming have an indirect influence on locality through strength and area of electric field.3 Good surface quality can be obtained by selecting optional current density and improving scanning velocity and jet flux.
通过分析射流电铸的电化学机理和电结晶生长方式，并结合大量的基础工艺实验，得出以下结论：1采用射流电铸的方式，由于提高了物质迁移速度和降低了扩散层的厚度，可将电铸的极限电流密度从传统的10～20A／dm~2提高到390A/dm~2以上； 2铸斑的定域性取决于电场的分布形态和电场的强度，它与电压和流场密切相关，电压越大电场越强分布面积越大，其他电铸参数也是通过影响电场的大小和分布来间接地影响定域性的； 3实验还发现要获得较好的表面质量，可提高扫描速度、喷射流量、和选用适当的电流密度。
The ink-jet system is modeled for analysis in this paper. Various structures and fluid flow, which affect the quality of ink droplets, are analyzed with VOF in the paper. The results show that the alternative frequency, average value and amplitude of efflux velocity have great influence on the quality of ink droplets. Further study shows that disturbance frequency extremely affects disturbance jetflow.
本文建立了喷码机喷墨系统的模型，应用VOF法对不同结构和不同流体流动状态下的喷墨情况进行了分析，研究了这些结构参数和流体流动状态对墨滴质量的影响，结果表明射流速度的变化频率、射流的平均速度和射流速度变化的幅值等对墨滴质量有较大的影响。
To obtain this increase, the pressure energy is first of all increased, followed by the addition of heat energy, before final conversion back to kinetic Energy in the form of a high velocity jet efflux.
为了达到这种增加，首先要增加压力能，继之加入热能，最后，再以高速喷气流的形式转变成动能。
According to the influence scope and mixing characteristics of the confined cross jets, three basic flow regimes were marked, namely attached jet, lift-off jet and impinging jet, with the jet-to-crossflow velocity ratio as the key factor.
实验覆盖宽广的参数范围，发现受限横向射流可划分为附壁横向射流、离升横向射流和冲击横向射流3种基本形式，射流与主流的流速比VR是决定受限横向射流形式的关键因素。
New tyPe ERA will achieve defend lmpe calfore rsurpnding projectile large calibre shaPed chrme, first of all, it is needing assuring the exP1osive adoPtod in the detonating platC charpe could be detonated by all making-mode shaPed charge's jet, esPecially kinetic energy mour-piercing Proectile of exceed l00mm calibre, also the exPlosive hav stated power and deonaing velocity, eXPlosive production is to the best of much, so that exPlosive ProdUCtion and twO plates drived by exPosbe PreduCon brin into plBy well dishnbance Won on jet and Proectile; 'The paPer carried out detailed analsis and test study aiIned at DO oplosive used in the detonatin plate tw Which could be detwd rel~ by not Only jet, bllt also kinedc eneny annur9forin8 PrOecule.
新型反应装甲要实现小法线角防御大口径穿、破甲弹，首先，必须保证主平板装药结构所采用的炸药能被各种制式破甲弹的聚能射流特别是100mm以上弹径的动能穿甲弹杆引爆，并且炸药要具有一定的威力和爆速，爆轰产物要尽量的多，以便充分发挥爆轰产物以及其所驱动的两块金属板对射流及弹杆的干扰作用。本文对新型反应装甲中的引爆平板装药中所采用的既能被射流引爆，又可以被动能穿甲弹杆可靠引爆的炸药—DO，进行了详细的分析和试验研究。
Program calculates parameters such as thrust, jet velocity, and pressure, all as a function of time, as well as total impulse and specific impulse.
程序会计算参数，如推力，射流速度和压力，作为一个时间的函数，以及总的冲动和具体的冲动。
Simulations of thermal plasma flow and heat transferare conducted for various conditions and vast technical background, such as forplasma torch with pure argon or argon/hydrogen as the working gas, the plasma torchworking within the laminar or turbulent regime, the plasma torch with subsonic orsupsonic velocity at the exit, the laminar or turbulent plasma free jet or impinging jet, the argon plasma jet issuing into an air surroundings or the argon/hydrogen plasma jetissuing into an argon environment, the subsonic or supsonic plasma jet, the plasma jetat the LTE (Local Thermodynamic Equilibrium) or Non-LTE state, etc.
模拟中考虑了等离子体物性随温度的大幅度变化，考虑了不同的流动状态、不同的工质气体及环境气体，以及亚声速与超声速流动情形，模拟对象包括：以纯氩及氩一氢混合气体为工质的发生器，处于层流及湍流流动状况的发生器，亚声速及超声速电弧等离子体发生器，层流及湍流的等离子体自由射流及冲击射流，空气环境中的氩等离子体射流及氩气环境中的氩-氢混合气体为工质的等离子体射流，亚声速等离子体射流及超声速等离子体射流，LTE等离子体射流及化学非平衡等离子体射流，等等。
What's more, the relations between the maximum acceleration distance, the jet velocity, and the flow of sand carrier are obtained. The effect of particles on base layers...
计算结果表明，通常情况下，充填砂砾的加速距离小于炮眼深度，即砂砾以最大喷速进入地层，而且随着施工的进行，该喷射速度可以达到破坏地层胶结物所需的最小速度。
Curves of the jet tip velocity and the jet length vs time were obtained.
研究了射流头部速度、射流长度时程曲线等变化规律。
A two -dimension spray model on the theory of gaseous jet was used to calculate both spray penetration and spray tip velocity.
采用气相喷雾混合过程的数学模型对喷雾贯穿距和喷射速度的模拟计算说明气相射流的假设能够较好地模拟高压喷雾体的空间发展历程。