亚音速流爬坡问题非平凡解的不存在性 |
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引用本文: | 许刚,高燕. 亚音速流爬坡问题非平凡解的不存在性[J]. 南京大学学报(自然科学版), 2016, 0(2): 163-176. DOI: 10.3969/j.issn.0469-5097.2016.02.005 |
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作者姓名: | 许刚 高燕 |
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作者单位: | 江苏大学理学院,镇江,212013 |
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基金项目: | 国家自然基金(11571141 |
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摘 要: | 本文主要研究三维亚音速流爬坡问题非平凡解的不存在性,在本文中,我们假设流体是等熵定常无旋的,也就是说,可以用定常的位势流方程来描述.通过建立三维角状区域中二阶线性椭圆方程Neumann边值的先验估计,我们证明在这样的区域中不存在全局非平凡的低马赫亚音速流.本文将已有结果中的区域推广到整个完全的三维角状区域.
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关 键 词: | 亚音速流 位势流方程 加权赫尔德空间 |
NONEXISTENCE OF A GLOBAL NONTRIVIAL SUBSONIC SOLUTION PAST AN UNBOUNDED 3D RAMP |
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Abstract: | In this paper,we study the nonexistence of a global nontrivial subsonic solution in an unbounded 3D ramp Ω.The flow is assumed to be steady,isentropic and irrotational,namely,the movement of the flow is described by the potential equation.By establishing a prior estimate on the solution of the Laplace equation in Ω with Neumann boundary condition on (6)Ω,we prove that there is no global nontrivial subsonic flow with low Mach number in such domain.This paper extendes an existing result to a full 3D ramp case. |
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Keywords: | supersonic flow potential equation weighted H(o)lder space |
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