کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9825048 | 1521505 | 2005 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical simulation of nonequilibrium flow in high-enthalpy shock tunnel
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Numerical simulation of nonequilibrium flow in high-enthalpy shock tunnel Numerical simulation of nonequilibrium flow in high-enthalpy shock tunnel](/preview/png/9825048.png)
چکیده انگلیسی
The flow field of a nozzle starting process with thermal and chemical nonequilibrium has been simulated. This flow is produced in high enthalpy impulse facilities such as the free piston shock tunnel. The governing equations are the axisymmetric, compressible Navier-Stokes equations. In this study, Park's two-temperature model, where air consists of five species, is used for defining the thermodynamic properties of air as a driven gas. The numerical scheme employed here is the hybrid scheme of the explicit and implicit methods, which was developed in our laboratory, along with AUSM+ to evaluate inviscid fluxes. In the present simulation, the Mach number of an incident shock wave is set at Ms=10.0. It corresponds to a specific enthalpy, h0, of 12 MJ/kg. The results clearly show the complicated thermal and chemical nonequilibrium flow field around the end of the shock tube section and at the nozzle inlet during the initial stage of the nozzle starting process. They also suggest that the phenomenon of nozzle melting might be associated with a flow separation at the nozzle inlet.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 30, Issues 2â4, FebruaryâMarch 2005, Pages 165-179
Journal: Energy - Volume 30, Issues 2â4, FebruaryâMarch 2005, Pages 165-179
نویسندگان
M. Kaneko, I. Men'shov, Y. Nakamura,