1) erosion rate
冲蚀速率
1.
The erosion rate of the exhaust pipe by the particle in different bend angles was compared,and the erosion law of the exhaust pipe by the cutting was analyzed qualitatively.
利用CFD软件计算了90°弯角的排气管中气体的压力和速度分布,仿真了弯管中颗粒的运移轨迹,对比了不同弯角下颗粒对排气管的冲蚀速率,定性地分析了岩屑颗粒对排气管的冲蚀规律。
2.
This mathematic model includes the flow field simulation of the continuous carrier fluid under Eulerian coordinate system, the inter-particle collision simulation using the discrete particle hard sphere model under Lagrangian coordinate system and the erosion rate calculation using semi-empirical formulations.
建立了考虑颗粒碰撞的颗粒冲蚀计算模型,该数学模型包括:在Eulerian坐标系下求解连续相流场;在Lagrangian坐标系下运用离散颗粒硬球模型求解颗粒碰撞;应用半实验关联式求解颗粒冲蚀速率。
2) impact speed
冲蚀速度
1.
The relationship between impact speed and erosion wear rate of several kinds of middle temperature abradable seal coatings was investigated by a CMS 100 self made vacuum sand erosion machine.
在自制的真空自由落砂式冲蚀磨损试验机上,对几种中温封严涂层的冲蚀率与冲蚀速度之间的关系进行了试验研究。
3) erosion rate
冲蚀率
1.
Study on Erosion Rate and Cutting Quality of Monocrystalline Silicon Cut by Micro Abrasive Air Jet
微磨料气射流切割单晶硅冲蚀率及切割质量研究
2.
The results show that the maximum erosion rate occurs at 75° impact angle, the erosion rates increase with increase of particle amounts and particle velocity.
结果表明:最大冲蚀率发生在75°攻角,冲蚀率随磨粒量、冲击速度的增大而增加。
4) corrosion rate
腐蚀速率
1.
Research on corrosion rate of sucker rod steel 20Ni2Mo in wet H_2S;
20Ni2Mo抽油杆钢在湿H_2S环境中的腐蚀速率
2.
Description of the corrosion rate of 16Mn pipeline steel in soil by using neural network;
16Mn管道钢土壤腐蚀速率描述的人工神经网络方法
3.
Effect of temperature and pressure on CO_2/H_2S corrosion rate of N80 steel;
温度和压力对N80钢CO_2/H_2S腐蚀速率的影响
5) Corrosion speed
腐蚀速率
1.
First time introduces P_(CO_2)/P_(H_2S) sub pressure to forecast model of tubing steel corrosion speed in order to find out the relation between tubing steel corrosion speed CR and CO_2 sub pressure P_(CO_2)、H_2S sub pressure P_(H_2S).
为了找出油管钢腐蚀速率CR与CO2分压PCO2、H2S分压PH2S之间的关系,首次将分压比PCO2/PH2S引入油管钢腐蚀速率预测模型,在不同分压比下,视一种气体腐蚀为主导,另一种气体腐蚀为影响因素来建立两个分模型,进而将两个分模型叠加,得到总的腐蚀速率预测模型。
6) corrosion velocity
腐蚀速率
1.
While the chipping water applied in the process of circulation cooling water, the average corrosion velocity is 0.
切粒水回用于循环水冷却水系统过程中,腐蚀速率较高,平均为0。
补充资料:冲蚀
冲蚀
erosion corrosion
ehongsh-冲蚀(erosion corrosion)金属材料表面与腐蚀流体冲刷的联合作用,而引起材料局部的金属腐性。在发生这种腐蚀时,金属离子或腐蚀产物因受高速腐蚀流体冲刷而离开金属材料表面,使新鲜的金属表面与腐蚀流体直接接触,从而加速了腐蚀过程。若流体中悬浮较硬的固体颗粒,则将加速材料的损坏。一般说来,流体的速度愈高,流体中悬浮的固体颗粒愈多、愈硬,冲刷腐蚀速度愈快。腐蚀介质流动速度又取决于流动方式:层流时,由于流体的粘度,在沿管道截面有一种稳态的速度分布;湍流时,破坏了这种稳态速度分布,这不仅加速了腐蚀剂的供应和腐蚀产物的迁移,而且在流体与金属之间产生切应力,能剥离腐蚀产物,从而加大了冲蚀速度。因此,在管道的拐弯处及流体进入管道或贮罐处容易产生这种破坏。另外,金属表面成膜的特征也可以影响冲蚀速度。硬的、致密的、连续的、粘附性强的膜冲蚀速度小,反之则大。抑制或减少冲蚀的措施是:选择耐蚀性和耐磨性好的材料;改变腐蚀环境如添加缓蚀剂,过滤悬浮固体粒子,降低温度,减小流速和湍流;采用栖牲阳极作阴机保护等。 (1陈树俊l)
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