您的位置: 专家智库 > >

中国博士后科学基金(20100471016)

作品数:4 被引量:21H指数:2
相关作者:明平剑龚京风宣领宽张文平段文洋更多>>
相关机构:哈尔滨工程大学更多>>
发文基金:中国博士后科学基金国家自然科学基金更多>>
相关领域:理学交通运输工程航空宇航科学技术更多>>

文献类型

  • 4篇中文期刊文章

领域

  • 3篇理学
  • 1篇交通运输工程
  • 1篇航空宇航科学...

主题

  • 2篇NUMERI...
  • 2篇VOF
  • 1篇大涡模拟
  • 1篇低频
  • 1篇液舱
  • 1篇数值模拟
  • 1篇水动力
  • 1篇水动力特性
  • 1篇流噪声
  • 1篇螺旋桨
  • 1篇结构网格
  • 1篇晃荡
  • 1篇横荡
  • 1篇非结构
  • 1篇非结构网格
  • 1篇高阶格式
  • 1篇BASED_...
  • 1篇UNSTRU...
  • 1篇SLOSHI...
  • 1篇值模拟

机构

  • 2篇哈尔滨工程大...

作者

  • 2篇明平剑
  • 1篇张文平
  • 1篇宣领宽
  • 1篇段文洋
  • 1篇龚京风

传媒

  • 2篇Journa...
  • 1篇计算物理
  • 1篇中国舰船研究

年份

  • 1篇2014
  • 1篇2012
  • 1篇2011
  • 1篇2010
4 条 记 录,以下是 1-4
排序方式:
NUMERICAL SIMULATION OF SLOSHING IN RECTANGULAR TANK WITH VOF BASED ON UNSTRUCTURED GRIDS被引量:7
2010年
A new method for sloshing simulation in a sway tank is present, in which the two phase interface is treated as a physical discontinuity, which can be captured by a well-designed high order scheme. Based on Normalized Variable Diagram (NVD), a high order discretization scheme with unstructured grids is realized, together with a numerical method for free surface flow with a fixed grid. This method is implemented in an in-house code General Transport Equation Analyzer ( GTEA ) which is an unstructured grids finite volume solver. The present method is first validated by available analytical solutions. A simulation for a 2-D rectangular tank at different excitation frequencies of the sway is carried out. A comparison with experimental data in literature and results obtained by commercial software CFX shows that the sloshing load on the monitor points agrees well with the experimental data, with the same grids, and the present method gives better results on the secondary peak. It is shown that the present method can simulate the free surface overturning and breakup phenomena.
MING Ping-jianDUAN Wen-yang
关键词:SLOSHING
Unstructured finite volume method for water impact on a rigid body被引量:1
2014年
A new method is presented for the water impact simulation, in which the air-water two phase flow is solved using the pressure-based computational fluid dynamics method. Theoretically, the air effects can be taken into account in the water structure interaction. The key point of this method is the air-water interface capture, which is treated as a physical discontinuity and can be captured by a well-designed high order scheme. According to a normalized variable diagram, a high order discrete scheme on unstructured grids is realised, so a numerical method for the free surface flow on a fixed grid can be established. This method is implemented using an in-house code, the General Transport Equation Analyzer, which is an unstructured grid finite volume solver. The method is verified with the wedge water and structure interaction problem.
余艳明平剑段文洋
螺旋桨低频流噪声模拟方法研究被引量:13
2012年
针对DTMB P4119螺旋桨在进速比为0.833时的流噪声进行研究,探讨螺旋桨低频流噪声数值模拟方法。首先采用大涡模拟方法模拟螺旋桨的非稳态流场,然后求解K-FWH方程预测低频流噪声。将计算得到的推力系数和扭矩系数与实验值比较,验证流场模拟的正确性。从流场仿真结果可以看出,螺旋桨表面存在连续的涡脱落现象。声场计算的结果表明:离散噪声远大于宽带噪声;宽带噪声主要由螺旋桨表面的涡脱落引起,宽带噪声引起螺旋桨近场总声压级的周向波动;在同一半径处总声压级沿轴向逐渐减小,在同一平面内总声压级沿径向先增加后减小。
龚京风张文平明平剑宣领宽
关键词:螺旋桨大涡模拟水动力特性
液舱横荡非结构网格高阶格式数值模拟
2011年
提出一种液舱横荡数值模拟的方法,将气液两相交界面视为物理间断,通过高阶精度离散格式捕捉间断.根据NVD(Normalized Variable Diagram)实现非结构化网格上高精度离散格式,建立固定网格上自由表面运动模拟方法.在开发的非结构网格有限体积法求解器GTEA(General Transport Equation Analyzer)基础上,实现上述方法.首先对经典的溃坝过程进行模拟,并与文献结果对比验证方法和程序的可信度.对二维矩形液舱在不同激振频率时的横荡进行数值计算,并与实验以及商业软件CFX计算结果进行比较.结果表明方法和软件可以模拟自由面的翻卷、破碎运动现象,对距自由面较深点处流体载荷的计算结果与实验值符合较好,与商业软件CFX相比,在相同计算网格下,算法可以更好的计算次峰值,验证方法正确可行.
明平剑段文洋
关键词:晃荡数值模拟非结构网格
共1页<1>
聚类工具0