Numerical Clarification of Wavy Sand Erosion Phenomena generated by Interaction among Flow, Small Particle and Wall Surface

流、小颗粒与壁面相互作用产生的波状砂蚀现象的数值解释

基本信息

  • 批准号:
    16560158
  • 负责人:
  • 金额:
    $ 1.98万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2004
  • 资助国家:
    日本
  • 起止时间:
    2004 至 2005
  • 项目状态:
    已结题

项目摘要

Sand erosion is a phenomenon where solid particles impinging to a wall cause serious mechanical damages to the wall surface. This phenomenon is a typical multi-physics problem where the flow field, particle trajectory and wall deformation interact with among others. It is well known that the performance and lifetime of various machines are severely degraded due to sand erosion. We have developed the numerical procedure for sand erosion phenomenon. To simulate the phenomenon, the turbulent flow, the particle trajectory and the amount of erosion on the eroded wall were calculated repeatedly. The Neilson-Gilchrist model was used to estimate the weight loss due to sand erosion.In 2004, we extended this code to a three-dimensional computation, and it was applied to the 90-degree bend. The main objective was to clarify the reason why the wavy erosion pattern is formed over the curved wall. 9 cases with different particle diameters and wall curvatures were computed. The materials for the wall … More and the particle were adopted as aluminum and silicon carbide, respectively. It was found that (1)once a particle hits against a wall, an erosion cavity is generates on the wal,. (2)the erosion cavity mainly grows in the streamwise direction, (3)the spanwise growth of the erosion cavity is dominated by the longitudinal vertical motion over the curved wall, and (4)the above described phenomena produces the wavy erosion pattern over the curved wall.In 2005, I tried to clarify the mechanism of wavy sand erosion in a compressor blade passages. First, the code was extended to the rotational frame of reference. About 3 million grid points were used in all computations. It was confirmed that (A)sand erosion severely occurs around the leading edge and the tip of the rotor pressure side, (B)erosion does not appear remarkably in the stator because of the less kinetic energy, (C)in the rotor passage the centrifugal force makes the particles go toward the tip, and (D)particles are accelerated in the stator and thus sand erosion would take place again in the downstream stages. However, since wavy erosion pattern has not clearly reproduced, further investigations will be needed. Less
砂侵蚀是一种现象,其中撞向墙壁的固体颗粒会对壁表面造成严重的机械损害。这种现象是一个典型的多物理问题,其中流场,颗粒轨迹和壁变形与其他相互作用。众所周知,由于沙子侵蚀,各种机器的性能和寿命严重降解。我们已经开发了沙子侵蚀现象的数值程序。为了模拟现象,反复计算湍流,粒子轨迹和侵蚀量。 Neilson-Gilchrist模型用于估计由于沙子侵蚀引起的重量损失。在2004年,我们将此代码扩展到三维计算,并将其应用于90度弯曲。主要目的是阐明在弯曲壁上形成波浪形侵蚀模式的原因。计算了9例具有不同颗粒直径和壁曲率的病例。壁的材料……更多,颗粒分别用作铝和碳化硅。已经发现(1)一旦粒子撞到壁上,就会在WAL上产生侵蚀腔。 (2) the erosion cavity mainly grows in the streamwise direction, (3) the spanwise growth of the erosion cavity is dominated by the longitudinal vertical motion over the curved wall, and (4) the above described phenomena produces the wavy erosion pattern over the curved wall.In 2005, I tried To clarify the mechanism of wavy sand erosion in a compressor blade passages.首先,将代码扩展到旋转的参考框架。在所有计算中使用了约300万个网格点。已经证实,(a)砂侵蚀发生在转子压力侧的前缘和尖端周围,(b)由于动能较少,(c)转子传递中的侵蚀不会显着出现在定子中,离心力使粒子朝着尖端朝着尖端,并且(d)颗粒在sand eRos中加入,并将其加入,并将其加入到Sandstrtstrtstrtstor中。但是,由于波浪形侵蚀模式尚未明确复制,因此需要进一步研究。较少的

项目成果

期刊论文数量(58)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Numerical Investigation on Wavy Streak Formation due to Sand Erosion
沙蚀引起的波状条纹形成的数值研究
Multi-Physics Simulation of Sand-Erosion Phenomenea on Turbine Blade
涡轮叶片沙蚀现象的多物理场模拟
Modelling of Three-Phase Flow in Electro-Chemical Machining
电化学加工中的三相流建模
Numerical Simulation of Hydrocarbon Fuels PDEs by a Detailed Reaction Model
通过详细反应模型对碳氢燃料偏微分方程进行数值模拟
Numerical Simulation of Ice Accretion on Wind Turbine Blade
风力发电机叶片积冰的数值模拟
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YAMAMOTO Makoto其他文献

超音波面状振動を用いた異種金属接合における引っ張りせん断強度と十字引っ張り強度
使用超声波平面振动连接异种金属时的拉伸剪切强度和交叉拉伸强度
  • DOI:
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    0
  • 作者:
    MAMORI Hiroya;FUKUDOME Koji;OGINO Kohei;FUKUSHIMA Naoya;YAMAMOTO Makoto;佐久間晴樹,淺見拓哉,三浦 光
  • 通讯作者:
    佐久間晴樹,淺見拓哉,三浦 光
Aerodynamics of Owl-like Wing Model at Low Reynolds Numbers
低雷诺数下猫头鹰翼模型的空气动力学

YAMAMOTO Makoto的其他文献

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{{ truncateString('YAMAMOTO Makoto', 18)}}的其他基金

Computational topology on knots and spatial graphs
结和空间图的计算拓扑
  • 批准号:
    21500022
  • 财政年份:
    2009
  • 资助金额:
    $ 1.98万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Numerical Investigation of Sand Erosion Phenomena in Transonic Fan of Jet Engine
喷气发动机跨音速风扇沙蚀现象的数值研究
  • 批准号:
    20360088
  • 财政年份:
    2008
  • 资助金额:
    $ 1.98万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Numerical Investigaton of Sand Erosion Phenomena in Rotor/Stator Interaction of Jet Engine Compressor
喷气发动机压气机转子/定子相互作用中沙蚀现象的数值研究
  • 批准号:
    18560180
  • 财政年份:
    2006
  • 资助金额:
    $ 1.98万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
On computational algorithms of invariatns of links and graphs
关于链接和图不变性的计算算法
  • 批准号:
    14540136
  • 财政年份:
    2002
  • 资助金额:
    $ 1.98万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Synthesis and Specific Properties of Novel Allosteric Host Compounds
新型变构主体化合物的合成和特性
  • 批准号:
    07651027
  • 财政年份:
    1995
  • 资助金额:
    $ 1.98万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
STUDIES ON THE OPTIMUM FOREST OPERATION SYSTEM ON THE TRANSFORMATION PROSESS FROM EVEN-AGED UNIFORM FOREST TO SELECTION FOREST
均匀林向选择林转变过程的优化森林经营体系研究
  • 批准号:
    04660172
  • 财政年份:
    1992
  • 资助金额:
    $ 1.98万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C).
Stereoselective Cyclization Reactions Using Organotin Compounds
使用有机锡化合物的立体选择性环化反应
  • 批准号:
    63550616
  • 财政年份:
    1988
  • 资助金额:
    $ 1.98万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Application of robotics to palpation of injury of ligament-Development of a new method of knee instability test-
机器人技术在韧带损伤触诊中的应用-膝关节不稳定测试新方法的开发-
  • 批准号:
    62870062
  • 财政年份:
    1987
  • 资助金额:
    $ 1.98万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research

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