English translation for "涡流区"
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- eddy zone
vortex cavity
Related Translations:
涡流仪器: eddy current instrumenteddy-current instrument 涡流探伤仪: eddy curent inspection instrumenteddy current flaw detectoreddy current testing methodeddycurrentflawdetector 对称涡流: rotationally symmetric flow 涡流纺纱: vortex spinningvortex spun yarnvortex un yarn 涡流应力: eddy streeeddy stress
- Example Sentences:
| 1. | Numerous and extensive cavities retard the turbulent mixing process .
多而大的涡流区延迟了扰动的混合过程。 | | 2. | Numerous and extensive eddy cavities retard the turbulent mixing process .
多而大的涡流区延迟了扰动的混合过程。 | | 3. | If the injection period is extended long enough, the effects of isolated eddy cavities are neutralized .
如果喷注时期延续得足够长，隔开的涡流区的影响被抵消。 | | 4. | By comparing the dry plate pressures drop and distributions of velocities simulated on single valve with those of double valves , it was found that there was intense turbulence in the flow fields around fixed - valve , there were eddy areas between valve side orifices and tray wall , there were eddies above the valves too , these led to the complex behaviors of gas perforating valve , these had a great effect on the gas - liquid mass transfer process . at the same time , in order to prevent the disadvantageous effect of gas between one valve with another on the gas - liquid mass transfer , it was very effective to change the fields of gas perforating valve by folding the edges of valve
通过对数值模拟得出的单阀和双阀塔板的干板压降及流场速度分布分析对比后发现，固定阀周围流场存在较强的湍动，阀侧孔与塔板壁面区域以及阀体的上方空间存在明显的涡流区，使气体穿阀后的行为变得复杂，并对气液传质过程产生重大影响；模拟结果表明，为防止和削弱固定阀间的对冲造成的“死区”对传质带来的不利影响，通过折边来改变气体的气路是非常有效的，模拟值与实验值基本得到吻合。 | | 5. | For shelters , the results show : 1 ) to reduce the raining drops entering into the inlet and to decrease the influence of the vortex , the declining angle of 45 is recommended for the shelters ; 2 ) it is better to choose those shelters which are longer 100 mm ~ 200 mm than the height of the inlets , as they may protect the room from rain
对于单侧百叶风口的挡雨板，计算表明: 1 )为了防止雨水随空气流入自然进风口，并且使风口尽量少受涡流区的影响，建议选用倾斜角度为45 “的挡雨板; 2 )建议选用长度比风口高度长100mm - - 200 “的挡雨板，可以较好的避免挡雨板过短将雨水带入室内和过长影响风口进风的情况。 | | 6. | Numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation . it becomes clear that fire source modeling is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modeling of the fire source . the flame area which has developed from the fire source is an area of chemical reaction caused by combustion . even if grids in the vicinity of the fire source are made fine , it was difficult to simulate the heat generation area with consideration to this chemical reaction through using a method for setting the heat release rate simply on the fire source surface . therefore , we proposed a method adopting the knowledge on flame shape under the longitudinal ventilation and incorporating it into numerical simulation and it showed a good agreement with the experimental results . it was shown through experiments in a tunnel with longitudinal ventilation that the hot current developed toward the tunnel center downwind from the fire source near a wall . the cause was investigated by numerical simulation and it became clear from the results that the spiral air by the fire plume created a vortex in the crevice between the wall and the plume
运用cfd进行数字模拟,以了解纵向通风隧道内热烟气流的特性.通过模拟发现对火源进行模拟非常重要,热烟气流特性受火源位置的影响很大,并且对火源模拟方法很敏感.火源生成的火焰区是燃烧引起的化学反应区域.即使火源附近的木垛排列完好,也很难在考虑这些化学反应条件下模拟热生成区域.建议考虑纵向通风隧道内火焰形状并对它进行数字模拟.模拟结果与试验结果非常吻合.试验证明,在纵向通风隧道内,热烟气流从靠近墙体火源处顺风向隧道中心蔓延.数字模拟结果发现,火灾羽流造成的螺旋上升空气会在墙体和羽流之间形成一个涡流区 | | 7. | Abstract : numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation . it becomes clear that fire source modeling is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modeling of the fire source . the flame area which has developed from the fire source is an area of chemical reaction caused by combustion . even if grids in the vicinity of the fire source are made fine , it was difficult to simulate the heat generation area with consideration to this chemical reaction through using a method for setting the heat release rate simply on the fire source surface . therefore , we proposed a method adopting the knowledge on flame shape under the longitudinal ventilation and incorporating it into numerical simulation and it showed a good agreement with the experimental results . it was shown through experiments in a tunnel with longitudinal ventilation that the hot current developed toward the tunnel center downwind from the fire source near a wall . the cause was investigated by numerical simulation and it became clear from the results that the spiral air by the fire plume created a vortex in the crevice between the wall and the plume
文摘:运用cfd进行数字模拟,以了解纵向通风隧道内热烟气流的特性.通过模拟发现对火源进行模拟非常重要,热烟气流特性受火源位置的影响很大,并且对火源模拟方法很敏感.火源生成的火焰区是燃烧引起的化学反应区域.即使火源附近的木垛排列完好,也很难在考虑这些化学反应条件下模拟热生成区域.建议考虑纵向通风隧道内火焰形状并对它进行数字模拟.模拟结果与试验结果非常吻合.试验证明,在纵向通风隧道内,热烟气流从靠近墙体火源处顺风向隧道中心蔓延.数字模拟结果发现,火灾羽流造成的螺旋上升空气会在墙体和羽流之间形成一个涡流区 | | 8. | For shutters , the results show : 1 ) according to the formula p = , the theoretical value of is calculated by the effective velocity of the flow , and its engineering value is calculated by the arriving velocity of the flow , the relationship between the theoretical value of and its engineering value is 2 ) the smaller value of declining angle will result in the smaller pressure loss and smaller outlet velocities . as a result , the declining angle of 30 掳 or less is recommended in some places which need small wind velocity , such as broadcasting studio and library , and the declining angle of 45 掳 or less is recommended in places which need big wind velocity , such as cinema and office ; 3 ) the larger value of ratio between the wide of the shutter b and the space between two boards h ( b / h ) will result in the larger pressure loss and smaller outlet velocities . the range of b / h from 0 . 8 to 2 . 0 and the optimum value 1 . 2 is recommended ; 4 ) the range of b from 10 mm to 50 nun and the optimum value 40 mm is recommended ; 5 ) the proper thickness of the boards 8 of the shutters is 1 . 5 mm ; 6 ) cuneiform boards should replace the rectangle inlet boards of the shutters in order to obtain better ventilation
数值模拟采用fluent软件，计算结果用excel进行处理，通过对大量数值工况进行数值模拟计算，结果表明：对于单侧百叶风口，计算表明： 1 )对于公式p = ( ~ 2 ) 2 ，的理论计算值中定义为流体流经百叶风口内部时的速度，即有效速度，而工程上常使用流体的来流速度来计算，计算表明，的理论计算值与工程应用值的关系为( _ (理论) ) ( _ (工程) ) = 0 . 813 ； 2 )当来流速度一定时，挡板倾斜角度越小，压力损失越小、出口速度越小；因此在要求进口风速比较小的场所，如播音室、图书馆等，宜采用挡板角度30的百叶风口；在要求进口风速比较大的场所，如电影院、办公室等，百叶挡板的角度应选45 ； 3 )当来流速度一定时，百叶挡板的挡板宽度b与挡板间距h的比值b h越大，压力损失越大，出口速度越小，计算表明，鉴于压力损失、出口风速、板间形成涡流区的大小，百叶挡板的b h值取0 . 8到2 . 0之间， b h = 1 . 2为最佳值； 4 )当来流速度一定时，在计算的条件下，当百叶挡板宽度b = 40mm时，百叶挡板的阻力系数最小，考虑到涡流区等的影响，建议选用10mm b 50mm的百叶挡板；西安建筑科技大学硕士学位论文5 )百叶挡板的厚度取为1 . sinln为好; 6 )百叶挡板的入口侧可选用具有倾斜度的楔形挡板来代替矩形挡板，利用其较好的导流作用，可得到更好的出流效果。 |
- Similar Words：
- "涡流屏蔽" English translation, "涡流谱" English translation, "涡流器" English translation, "涡流强度" English translation, "涡流侵蚀作用" English translation, "涡流曲线" English translation, "涡流确" English translation, "涡流扰流片" English translation, "涡流热传导" English translation, "涡流热导率" English translation
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