圧縮性遷移翼列流れのLES解析(FR1 マイクロエネルギー変換)

概要

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Large-eddy simulation of compressible transitional flows in a low-pressure turbine cascade is performed by using 6^<th>-order compact difference and 10^<th>-order filtering method Numerical results without free-stream turbulence and those with about 7% of free-stream turbulence are compared In these simulations, separated-flows in a turbine cascade accompanied by laminar-turbulent transition are realized, and the present results closely agree with past experimental measurements in terms of the static pressure distribution around the blade. In the case where no free-stream turbulence is taken into account, unsteady pressure field essentially differs from that with strong free-stream turbulence In the no free-stream turbulence case, pressure waves which propagate from blade's wake region have noticeable effects on the separated-boundary layer near the trailing-edge, and on the neighboring blade.
一般社団法人日本機械学会の論文
2004-06-22