| 叶轮机械迴转面流场的有限元近似解方法的研究和数值计算 |
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| 引用本文： | 谷传纲,桂利川,常鸿寿.叶轮机械迴转面流场的有限元近似解方法的研究和数值计算[J].力学学报,1989(2). |
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| 作者姓名： | 谷传纲 桂利川 常鸿寿 |
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| 作者单位： | 西安交通大学
(谷传纲，桂利川)，西安交通大学(常鸿寿) |
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| 摘 要： | 本文提出一种新的概念:即在应用有限元处理不同类型的流体力学、传热学问题时,应该根据各自问题的物理本质,采用不同型式的基函数(shape function),并在文1]的基础上,应用有限元近似解方法(FEAM)对直角弯管流动进行了数值计算和精度分析,还对带长短叶片的前向离心通风机的迴转面流场进行了数值计算和分析,在迴转面流场计算中采用了一种新的简化方法,解决了在非矩形单元上求取近似解的困难,计算结果表明在稀疏网格下能保持较高精度,从而明显地提高了计算速度。
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| 关 键 词： | 有限元分析 通风机 计算流体动力学 |
ADVANCED STUDY OF FINITE ELEMENT APPROXIMATE SOLUTION METHOD (FEASM) AND CALCULATION OF STREAM-SHEET OF REVOLUTION |
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| Gu Chuangang,Gui Lichuan,Chang Hongshou.ADVANCED STUDY OF FINITE ELEMENT APPROXIMATE SOLUTION METHOD (FEASM) AND CALCULATION OF STREAM-SHEET OF REVOLUTION[J].chinese journal of theoretical and applied mechanics,1989(2). |
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| Authors: | Gu Chuangang Gui Lichuan Chang Hongshou |
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| Institution: | Xi'an Jiaotong University |
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| Abstract: | The paper describes a new concept: it is necessary to use a corresponding type of modified shape function on based of physical meaning of different problems when we treat fluid mechanics or heat-transfer problems using the Finite Element Methor (FEM). And, using the Finite Element Approximate Solution Method (FEASM) proposed by Gu (1984, Ref. 1), we calculated the flow field of a square bend duct and one of stream-sheet of revolution in a forward centrifugal fan with or without splitter blades. A simplified method has been utilized to overcome the difficulty of seeking, the approximate solution on the non-rectangle element. The results show that the computational speed and accuracy can be raised by FEASM. |
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| Keywords: | element analysis turbo-fan computational fluid mechanics |
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