The numerical solution of steady viscous supersonic axisymmetric flowfield modelled by thin-layer Navier–Stokes equations is computed over a blunt cone with the shock-fitting method and the diagonal fourth-order central difference scheme implemented. Owing to the presence of high-order terms of the Taylor series in the discretization of derivatives, this method has high accuracy and low numerical error (dispersion error) compared with low-order methods. The boundary-closure scheme plays an important role in the numerical stability of this method. Using a coarse grid in this method, the results of numerical solution are found to be very close to those obtained with a fine grid employing the implicit second-order (Beam–Warming) method. Higher accuracy of this method is identified relative to the second-order method when the grid is being refined. The convergence rate of this method is also higher than the second-order method. Furthermore, the convergence of the method can be adjusted to accommodate the computational hardware capabilities.
کلید واژگان :TLNS equations, diagonal fourth-order method, supersonic viscous flow, shock-fitting
ارزش ریالی : 600000 ریال
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جزئیات مقاله
- کد شناسه : 1150987147763290
- سال انتشار : 2012
- نوع مقاله : پذیرفته شده در مجلات Scopus ,ISI با 4>IF>
- زبان : انگلیسی
- محل پذیرش : Proceedings of the Institution of Mechanical Engineers, Part G, Journal of Aerospace Engineering
- IF مجله : 0.4
- ISSN :
- تاریخ ثبت : 1396/08/14 12:14:37
- ثبت کننده : پروفسور محمد مهدی رشيدی
- تعداد بازدید : 189
- تعداد فروش : 0