旋转衍生力在旋转受限层板中的分布规律

白国强; 常海萍

doi:10.13224/j.cnki.jasp.2015.12.017

旋转衍生力在旋转受限层板中的分布规律

doi: 10.13224/j.cnki.jasp.2015.12.017

南京航空航天大学能源与动力学院江苏省航空动力系统重点实验室, 南京 210016

详细信息

作者简介:
白国强(1984-),男,山西阳泉人,博士生,主要从事航空发动机高温部件冷却技术研究.

中图分类号: V231.3
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出版历程
- 收稿日期: 2014-05-04
- 刊出日期: 2015-12-28

Distribution of forces induced by rotation in rotating limited lamilloy

Jiangsu Province Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

摘要

摘要: 采用数值模拟的方法,研究了旋转衍生力在旋转受限层板中的分布规律.研究表明:由于冷却流体被加热,离心力随着旋转半径的增加而降低,近壁面处离心力较低,远离壁面区域离心力较高.y方向哥氏力在进出口区域影响较大,中间区域可以忽略.z方向哥氏力在进出口区域影响较大,中间段随转速和旋转半径的增加而缓慢增加.离心力衍生的浮升力在冲击区域附近加速流体流动,在其他区域的近壁面处,离心力衍生的浮升力阻碍流体流动,在远离壁面区域,离心力衍生的浮升力加速流体流动.在中间段,离心力和离心力衍生的浮升力起主导作用.
- 离心力 /
- 哥氏力 /
- 浮升力 /
- 层板 /
- 分布规律
Abstract: The distribution of forces induced by rotating limited lamilloy was researched by numerical simulation. It was emphasized that because the cool fluid was heated, the centrifugal force was reduced with the increase of the radius, and became lower near the wall, but higher far from the wall.The Coriolis force directed y was evident in the areas of inlet and outlet, but it could be ignored in the middle of lamilloy. The Coriolis force directed z was evident in the areas of inlet and outlet, and increased slowly with the increase of the rotation speed and radius. The buoyancy force caused by centrifugal force increased the velocity of fluid near impact zoo, but in the other zoo and near the wall, it decreased the velocity of fluid, and far from the wall, it also increased the velocity of fluid. In the middle lamilloy, centrifugal force and buoyancy force caused by centrifugal force played a leading role.
- centrifugal force /
- Coriolis force /
- buoyancy force /
- lamilloy /
- distribution

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参考文献(18)

[1]	Hector I,Brian E,Launder D C,et al.Development of flow field and surface heat-transfer measurement and visualisation techniques for internal rotating cooling flows in gas turbine blades[R].AIAA-2006-3443,2006.
[2]	Taylor C,Xia J Y.A study of mixed geometrical and rotational effects on internal turbulent flow and heat transfer[J].International Journal of Numerical Methods for Heat and Fluid Flow,1992,2(1):37-53.
[3]	Wagner J H,Johnson B V,Kopper F C.Heat transfer in rotating serpentine passages with smooth walls[J].Journal of Turbomachinery,1991,113(3):321-330.
[4]	Wagner J H,Johnson B V,Hajek T J.Heat transfer in rotating passages with smooth walls and radial outward flow[J].Journal of Turbomachinery,1991,113(1):42-51.
[5]	Wagner J H,Johnson B V,Graziani R A,et al.Heat transfer in rotating serpentine passages with trips normal to the flow[J].Journal of Turbomachinery,1992,114(14):847-857.
[6]	Murata A,Mochizuki S.Effect of cross sectional aspect ratio on turbulent heat transfer in an orthogonally rotating rectangular smooth duct[J].International Journal of Heat and Mass Transfer,1999,42(20):3803-3814.
[7]	Pallares J,Davidson L.Large-eddy simulations of turbulent flow in a rotating square duct[J].Physics of Fluids,2000,12(11):2878-2892.
[8]	白国强,常海萍.旋流对旋转受限层板换热的影响[J].航空动力学报,2014,29(8):1789-1795. BAI Guoqiang,CHANG Haiping.Effect of spirality flow on heat transfer in rotating limited lamilloy[J].Journal of Aerospace Power,2014,29(8):1789-1795.(in Chinese)
[9]	Murata A,Mochizuki S.Centrifugal buoyancy effect on turbulent heat transfer in a rotating two-pass smooth square channel with sharp 180-deg turns[J].International Journal of Heat and Mass Transfer,2004,47(14):3215-3231.
[10]	Murata A,Mochizuki S.Effect of centrifugal buoyancy on turbulent heat transfer in an orthogonally rotating square duct with transverse or angled rib turbulators[J].International Journal of Heat Mass Transfer,2001,44(14):2739-2750.
[11]	Soong C Y.Thermal buoyancy effects in rotating non-isothermal flows[J].International Journal of Rotating Machinery,2001,7(6):435-446.
[12]	Prakash C,Zerkle R.Prediction of turbulent flow and heat transfer in a radially rotating duct[J].Journal of Turbomachinery,1992,114(4):835-846.
[13]	Dutta S,Andrews M J,Han J C.Prediction of turbulent heat transfer in rotating smooth square ducts[J].International Journal of Heat and Mass Transfer,1996,39(12):2505-2514.
[14]	Ekkad S V,Huang Y,Han J C.Detailed heat transfer distributions in two-pass smooth and turbulated square channels with bleed holes[J].Fundamentals of Augmented Single-Phase Convection,1996,330(8):133-140.
[15]	Hwang J J,Lai D Y.Three-dimensional mixed convection in a rotating multiple-pass square channel[J].International Journal of Heat and Mass Transfer,1998,41(8):979-991.
[16]	白云峰.旋转条件下冲击冷却数值模拟及实验研究[D].南京:南京航空航天大学,2004. BAI Yunfeng.Numerical simulation and experiment research on the effect of rotation on jet impingement cooling[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2004.(in Chinese)
[17]	Sathyamurthy P S,Karki K C,Patankar S V.Prediction of turbulent flow and heat transfer in a rotating square duct with a 180 degree bend[R].ASME Paper 94-GT-197,1994.
[18]	徐磊.静止和旋转条件下"冲击/稀疏气膜"双层壁换热特性研究[D].南京:南京航空航天大学,2007. XU Lei.Heat transfer of "impingement/sparse film holes" double plant in static and rotating state[D].Nanjing:Nanjing University of Aeronautics and Astronautics,2007.(in Chinese)