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tube bundles
相关语句
  管束
    Research progress of gas liquid two phase flow characteristics between tube bundles.
    管束间气液两相流动特性研究进展
短句来源
    During the tests the two-phase gap-flow Reynolds number ranges from 2.0×10 4~6.0×10 4 and the range of void fraction, from 0 - 0.3. By way of experimental analyses the Strouhal number of two-phase flows was determined in staggered tube bundles with different layout modes.
    试验时两相隙缝流Re数范围为 2 .0× 10 4~ 6 .0× 10 4,含气率的范围在 0~ 0 .3之间。 通过试验分析获得了不同排列形式的错列管束中两相流斯特拉赫数 ;
短句来源
    Abstract The paper reports an experimental studies on the flow resistance of airwaier two phase flow across tube bundles in horizontal tube shell type heat exchangers.
    本文对水平布置的、壳管式换热器中的气液两相流冲刷管束时的流动阻力进行了实验研究。
短句来源
    This paper reviews the numerical computation methods used to simulate the flow around a circular cylinder and the two phase flow in tube bundles. Relevant problems and some tentative new ideas of these numerical methods are introduced and analyzed with emphasis on the discrete vortex method to make the numerical simulation of the gas liquid two phase flow phenomenon in tube bundle.
    对单相流体圆柱绕流以及管束间气液两相流动的数值计算方法进行了综述,在对各种方法进行介绍分析的基础上,着重阐述了使用离散涡方法进行管束间气液两相流动现象数值模拟计算的有关问题及其解决方法的一些新设想.
短句来源
    It is noted that Weaver curves of single-phase flows can be approximately used as discrimination criteria for the tube bundle vibrations induced by the vortex shedding in rotating-square arranged and regular-triangle arranged tube bundles in two-phase flows.
    指出可以近似应用单相流时的Weaver曲线作为两相流中旋转正方形排列和正三角形排列管束旋涡脱落诱发管束振动的判别标准
短句来源
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  “tube bundles”译为未确定词的双语例句
    An Investigation on Drag Characteristics of Air-water Two-phase Flow Across Horizontal Tube Bundles
    气液两相流冲刷水平管束的阻力特性研究
短句来源
    The proposed model is expected to provide a new method to evaluate the flow induced vibration of a large number of flexible tube bundles with a relatively simple computing task.
    该模型具有简便、快捷以及能够对亚临界雷诺数下的流体诱导振动问题进行计算等优点,为多圆柱流体诱导振动问题提供了一种新的计算模型.
短句来源
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  tube bundles
Heat transfer and aerodynamic resistance of tube bundles with strip fins for air coolers
      
Investigation of the total energy (heat and power) performance of finned tube bundles in crossflow of air
      
The condensation of nitrogen vapor on the surfaces of vertical tube bundles
      
Hydraulic and heat-exchange properties of a fluidized bed with horizontal straight-row tube bundles
      
Some problems in the repair of tube bundles in furnaces
      
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The finite analytic method (FAM) is a new numerical method for solving Navier-Stokes equations. However, on complex geometric domains this method must employ the boundary-fitted coordinate transformation, which becomes very difficult for some flow regions. In this paper, the isoparametric element, which has been widely used in the finite element method, is incorporated into the FAM. The flow region is subdivided into a number of small arbitrary quadrilaterals, and each element is transformed into a square element...

The finite analytic method (FAM) is a new numerical method for solving Navier-Stokes equations. However, on complex geometric domains this method must employ the boundary-fitted coordinate transformation, which becomes very difficult for some flow regions. In this paper, the isoparametric element, which has been widely used in the finite element method, is incorporated into the FAM. The flow region is subdivided into a number of small arbitrary quadrilaterals, and each element is transformed into a square element by the shape functions of isoparametric element. Then the partial differential equations on the square element can be solved by the FAM. As an example, the flow in tube bundles has been calculated by this method.

有限分析法是近年发展起来的数值计算方法,该方法对非矩形的计算域必须使用坐标变换。本文使用有限元中等参单元的概念,在物理平面上将计算域划分成四边形的网格,利用等参单元的插值系数将其变换成正交的等参单元,然后在该单元上使用有限分析法求解微分方程。用此法计算了绕无限域内圆柱管道的粘性流场,说明该法是可行的。

Abstract The paper reports an experimental studies on the flow resistance of airwaier two phase flow across tube bundles in horizontal tube shell type heat exchangers.A tube shell heat exchanger model was used to serve as the test section,devided into four crossing paths by three baffles along its length.The frictional resistace and local drag were measured while a two phase flow,entering at end, swept over the tube bundles. Analytical studies were simultaneously conducted on flow models...

Abstract The paper reports an experimental studies on the flow resistance of airwaier two phase flow across tube bundles in horizontal tube shell type heat exchangers.A tube shell heat exchanger model was used to serve as the test section,devided into four crossing paths by three baffles along its length.The frictional resistace and local drag were measured while a two phase flow,entering at end, swept over the tube bundles. Analytical studies were simultaneously conducted on flow models and satisfactory correlative formulas were obtained.

本文对水平布置的、壳管式换热器中的气液两相流冲刷管束时的流动阻力进行了实验研究。实验段采用壳管式换热器模型,沿长度方向用三块折流板将管束分成四个冲刷流程。当气液两相流从一端进入并冲刷管束时,分别测量摩擦阻力和局部阻力,并用分相流动模型进行分析,得到良好的计算关联式。图6参9

Void fraction and friction pressuredrop measurements are madefor an adiabatic,verticalup-and-down two-phase flow of air-water mixture across a horizontal.in-line,5×20 rod bundle withpaith-to-diameter ratio,P/D,of 1.28.The average void fraction and friction pressure drop show astrong mass velocity effect,the val ues of void fraction are significantly less than those predicted by ahomogeneous flow model.New correlations for predicting void fraction and twophase pressure drop invertical up-and-down flow across...

Void fraction and friction pressuredrop measurements are madefor an adiabatic,verticalup-and-down two-phase flow of air-water mixture across a horizontal.in-line,5×20 rod bundle withpaith-to-diameter ratio,P/D,of 1.28.The average void fraction and friction pressure drop show astrong mass velocity effect,the val ues of void fraction are significantly less than those predicted by ahomogeneous flow model.New correlations for predicting void fraction and twophase pressure drop invertical up-and-down flow across a horizontal tube bundle are presented.The data are compared tothose published in the literatures。

对空气-水混合物在壳侧垂直向上、向下横掠水平管束流动时的平均截面含气率及两相摩擦压降进行了实验研究。管束为正方形顺排,管间距离与管径之比1.28.试验表明,质量流率对平均截面含气率及两相摩擦压降有显著的影响;截面含气率的测量值明显低于均相模型的预测值。提出了壳侧垂直向上、向下横掠水平管束时预测截面含气率及两相压降的新的关联式。

 
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