对于冲击面为凹面的冲击射流，远场噪声总声压级对喷嘴位置改变非常敏感。
For a jet impinging onto a concave plate, the OASPL of the far-field noise is quite sensitive to position variations of the nozzle.
气流和塑盘穴孔及钵苗底部的碰撞属于冲击射流，是实现水稻气力有序抛秧的关键技术。
Impact between airflow and bottom of plastic pan and pot seedling is impact jet and key of realizing paddy ordered pneumatic throwing transplantation.
为探索冲击射流离散频率噪声的产生机理，系统地研究了冲击射流离散频率噪声的特性。
In the study of flow oscillation and discrete frequency noise of impinging jet, it is found that there is a critical pressure ratio for a given nozzle and a nozzle-to-plate distance.
根据高坝下游水垫深度的不同，塘内水流呈现自由冲击射流、淹没冲击射流和面流三种流型。
It is found that three patterns may occur to the flow in the pool including free impact jet, submerge impact jet and surface flow according to the downstream water level.
要使中厚板淬火控冷装置获得最佳的冷却能力，必须要保证冲击射流可以穿透钢板表面的滞留水层。
To make quenching and control cooling equipment of plate achieve optimum cooling performance, it is necessary to ensure the impinging jet able to penetrate through the water layer deposited on plate.
对叶片弦中区内部有、无冲击射流的气膜出流冷却方式中，冷气侧气膜孔局部换热特性进行了实验研究。
Experimental investigation of the turbine blade local heat transfer characteristics at the inner side of the mid-chord region near film holes was conducted, with and without impingement cooling.
当横流雷诺数与射流雷诺数之比大于0．5之后，有横流时的冲击射流冷却局部努赛尔数比无横流时有较为显著下降。
When the cross-flow to jet Reyuolds number ratios are greater than 0. 5, the jet impingement Nusselt numbers arc obviously lower than that without cross-flow.
计算结果与实验吻合较好，所获得的喷嘴内外部流场的流动状况以及冲击射流参数分布，可用于优化喷嘴内部结构设计。
It is useful in understanding nozzle internal and external flow field and impinging jet parameter distribution. It is also helpful for optimal design of nozzle internal structure.
通过数值计算，得到了喷嘴出口自由射流与冲击射流情况下的流体速度、压力等参数分布情况，及这两种流场中的激波位置。
Through the numerical simulation, the distribution of those parameters such as speed, pressure of the free jet and impinging jet flow is obtained, also the position of shocks.
本文采用LIF(激光诱导荧光)流动显示和PIV(粒子图像速度场仪)测量对横流冲击射流的尾迹涡结构进行了实验研究。
The wake vortices of an impinging jet in crossflow were studied experimentally by means of laser-induced fluorescence (LIF) flow visualization and particle image velocimetry (PIV) measurement.
计算结果表明，冲击射流所形成的脉动壁压场可用正交分解进行描述，其特征谱函数随阶数的增加而迅速衰减，对谱密度函数进行低阶近似也非常有效。
The results show that the eigen spectral functions declined with the increasing of order rapidly. The reconstruction of spectral density function shows that low order approximation is very efficient.
该文以单兵火箭冲击射流流场为研究对象，采用数值模拟技术，对定向器管尾附近区域的燃气流场进行了数值计算，给出了发动机工作早期阶段冲击射流噪声场形成过程的计算结果。
Taking the impact jet flow field of individual rocket as research object, this paper calculates the jet flow field near the back of the launching tube by using the numerical simulation method.
焊缝氢含量的测试分析表明，阵列式射流冲击热沉系统可以改善接头的残余应力分布，防止冷却水侵入焊缝。
The hydrogen contents investigations show that the FSW process with array jet impingement sink appaatus can prevent the joints form the effect of colding water.
实验表明，提高了射流冲击压力的破碎岩石效率。
Experiment shows the rock breaking efficiency of jet flow impact pressure is enhanced.
前期实验表明，原盐水射流粉碎的主要作用机理是颗粒与靶物的冲击粉碎作用。
Previous works proved that the main mechanism of water jet comminuting is the strike effect.
通过试验方法研究了高压水射流功率、研磨介质的填充量和配比、冲击时间等对该装置粉碎能力的影响。
Also, the experiments had been carried out to study the effects of the high-pressured water jet power, the amount and composition of grinding medium and the impact time on the comminuting capability.
文中用莫尔条纹法测出了射流冲击场的气流密度分布。
The flow density distributions of jet flow shock field have been measured using Moire schlieren method in this paper.
在不同射流角度的错排射流的冷却通道中，大射流从射流孔冲击出来后在通道内形成旋涡，并使旋涡变得更强烈。
In the investigated cooling channel with different Angle stagger jets, the big jets cause swirl flow in the middle of channel and make the swirl flow stronger.
热图像真实地反映出每一股射流的冲击冷却局部换热特征。
The thermal images show truly the features of local heat transfer for each jet impingement cooling.
结果发现在冲击面附近的射流横截面上，伴随着两个反向旋转涡对的出现，形成了主流速度的两个偏心峰值。
It has been found that at the jet flow cross-section near the impingement surface accompanied by the appearance of two counter-rotating vortex pairs there emerge two eccentric peak values.
对浸没冷却和射流冲击冷却的基本传热特征进行了研究。
The fundamental characteristics of immersion cooling and jet impingement cooling were investigated.
本文提出了喷嘴沿被加热物体宽度方向往复移动式射流冲击加热方法，该加热方法可提高被加热物体的等温性。
A novel uniform heating method by impinging jet moving to-and-fro along the width of a heating object was proposed in this paper.
并在基本假设的基础上，对射流击中装甲单元后在介质中产生的冲击波进行了压力估算，及装甲单元的壁板变形和射流变形的计算。
Based on the basic hypothesis, the shock wave pressure emerging in the medium after the jet punctures the armor unit is estimated, while deformation of the armor unit plate and the jet are calculated.
在试验室中研究了高速淹没射流对挡板的冲击压强特性。
The characteristics of impinging pressure acting on vertical plate caused by high velocity submerged jet are experimentally studied.
采用数值分析方法分析了跨声速喷管无粘流动和超声速射流对挡流板的冲击流场。
Numerical analyses of the transonic nozzle inviscid flow and supersonic jet impingement on a jet TAB are presented.
根据流固耦合理论，建立了超高压水射流冲击破岩系统的数值分析理论模型。
A numerical analyzing model high pressure water jets impinging on rock is established according to fluid-structure interaction theory.
空泡射流的产生及射流冲击力的大小，由泡能和无量纲参数共同决定。
The generation and the impact force of cavitation liquid-jet depend on the bubble energy and non-dimension parameters.
本文基于绿色制造的理念，提出了一项可望从根本上强化加工区换热过程的独创构想——关于低温气动喷雾射流冲击强化换热的构想。
Based on the conception of Green Manufacturing, an original idea about Cryogenic Pneumatic Mist Jet Impinging Cooling is put forward in this paper.
结果表明，空泡射流的力学效应与等离子体冲击波的一样重要，有时甚至更明显。
The results have indicated that the bubble jetting is as important as the laser plasma shock wave, and more important sometimes.
结果表明，空泡射流的力学效应与等离子体冲击波的一样重要，有时甚至更明显。
The results have indicated that the bubble jetting is as important as the laser plasma shock wave, and more important sometimes.
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