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如图1所示,外界为一个标准大气压,内部压强为2kPa,想要仿真这个充气过程。但总是出现错误,如下所示。多次更换网格均无效,同类型的充气问题二维和三维仿真均出现同样的错误。恳求各位大神帮忙指出错误出在何处,非常感谢!
错误提示:
absolute pressure limited to 5.000000e+10 in 24 cells on zone 2
turbulent viscosity limited to viscosity ratio of 1.000000e+05 in 286 cells
#Divergence detected in AMG solver: k -> Increasing relaxation sweeps!
Error: Divergence detected in AMG solver: k
Error object: #f
图片说明:
图1是计算区域示意图
图2是计算网格
图3是入口处网格放大图
图4显示了发生错误的区域,主要集中在红色区域
计算过程:
(1)General-->Type: Pressure based; Time: Unsteady
(2)Models-->Energy: On; Viscous: Stand k-e, Stand Wall Fn
(3)Material-->Fluid-->air-->Density: ideal-gas
(4)Boundary Condition-->inlet: Pressure-inlet; Gauge Total Pressure: 0 Pa
(5)Boundary Condition-->Operating Conditions-->Operating pressure: 101325 Pa
(5)Solution Method-->Scheme: PISO
(6)Solution Initialization-->Compute from: all zones; Gauge pressure: -99325 Pa; X Velocity: 0; Y Velocity: 0; Turbulent kinetic energy: 1000; Turbulent dissipation rate: 100000; Temperature: 300.
(7)Run Calculation-->Time Step Size: 1e-5 |
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