| EXPERIMENTAL INVESTIGATION ON THE TURBULENT COHERENT STRUCTURES OF LAMINAR SEPARATION FLOW OVER A BACKWARD FACING STEP |
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| 作者姓名： | Wang Jinjun Lian Qixiang Lan Shilong |
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| 作者单位： | Fluid Mechanics Institute，Beijing University of Aeronautics and Astronautics，Beijing，China，100083 |
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| 摘 要： | ＥＸＰＥＲＩＭＥＮＴＡＬＩＮＶＥＳＴＩＧＡＴＩＯＮＯＮＴＨＥＴＵＲＢＵＬＥＮＴＣＯＨＥＲＥＮＴＳＴＲＵＣＴＵＲＥＳＯＦＬＡＭＩＮＡＲＳＥＰＡＲＡＴＩＯＮＦＬＯＷＯＶＥＲＡＢＡＣＫＷＡＲＤＦＡＣＩＮＧＳＴＥＰＷａｎｇＪｉｎｊｕｎ；ＬｉａｎＱｉｘｉａｎｇ...
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EXPERIMENTAL INVESTIGATION ON THE TURBULENT COHERENT STRUCTURES OF LAMINAR SEPARATION FLOW OVER A BACKWARD FACING STEP |
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| Wang Jinjun, Lian Qixiang, Lan Shilong.EXPERIMENTAL INVESTIGATION ON THE TURBULENT COHERENT STRUCTURES OF LAMINAR SEPARATION FLOW OVER A BACKWARD FACING STEP[J].Chinese Journal of Aeronautics,1996(3). |
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| Authors: | Wang Jinjun Lian Qixiang Lan Shilong |
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| Abstract: | The experimental investigation is conducted with LDV and hydrogen bubble technique in water flow. The shear layer thickness. the vorticity thickness. the maximulll value of turbulence intensities. the turbulent coherent structure. the variations of wall shear stress and the boundary layer shape factor are obtained. In the redevelopment region. the detailed analysis is first made for the streak structures in the near wall region and the turbulent boundary layer is formed at (x-xr) / h = 20. |
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| Keywords: | backward facing steps laminar boundary layer separated flow turbulent boundary layer reattached flow |
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