The authors study the fluid dynamic behavior of the stochastic Galerkin (SG for short) approximation to the kinetic Fokker-Planck equation with random uncertainty. While the SG system at the kinetic level is hyperbolic, its fluid dynamic limit, as the Knudsen number goes to zero and the underlying kinetic equation approaches to the uncertain isentropic Euler equations, is not necessarily hyperbolic, as will be shown in the case study fashion for various orders of the SG approximations.
机构:
Qingdao Univ, Sch Math & Stat, Qingdao 266071, Shandong, Peoples R ChinaQingdao Univ, Sch Math & Stat, Qingdao 266071, Shandong, Peoples R China
Qian, Shouguo
Liu, Yu
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Qingdao Univ, Sch Math & Stat, Qingdao 266071, Shandong, Peoples R ChinaQingdao Univ, Sch Math & Stat, Qingdao 266071, Shandong, Peoples R China
Liu, Yu
Li, Gang
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Qingdao Univ, Sch Math & Stat, Qingdao 266071, Shandong, Peoples R ChinaQingdao Univ, Sch Math & Stat, Qingdao 266071, Shandong, Peoples R China
Li, Gang
Yuan, Li
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Chinese Acad Sci, Acad Math & Syst Sci, LSEC, Beijing 100190, Peoples R China
Chinese Acad Sci, Acad Math & Syst Sci, NCMIS, Inst Computat Math & Sci Engn Comp, Beijing 100190, Peoples R ChinaQingdao Univ, Sch Math & Stat, Qingdao 266071, Shandong, Peoples R China
机构:
Univ Utah, Dept Math, Salt Lake City, UT 84112 USA
Univ Utah, Sci Comp & Imaging SCI Inst, Salt Lake City, UT 84112 USAUniv Utah, Dept Math, Salt Lake City, UT 84112 USA
Dai, Dihan
Epshteyn, Yekaterina
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Univ Utah, Dept Math, Salt Lake City, UT 84112 USAUniv Utah, Dept Math, Salt Lake City, UT 84112 USA
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Mathematics Department, The Pennsylvania State University, University Park,PA,16802, United StatesMathematics Department, The Pennsylvania State University, University Park,PA,16802, United States
Bressan, Alberto
Jiang, Yi
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Department of Mathematics and Statistics, Southern Illinois University Edwardsville, Edwardsville,IL,62026, United StatesMathematics Department, The Pennsylvania State University, University Park,PA,16802, United States
Jiang, Yi
Liu, Hailiang
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Mathematics Department, Iowa State University, Ames,IA,50011, United StatesMathematics Department, The Pennsylvania State University, University Park,PA,16802, United States