| 3D couette flow of dusty fluid with transpiration cooling |
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| 作者姓名： | GOVINDARAJAN A RAMAMURTHY V SUNDARAMMAL K |
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| 作者单位： | DepartmentofMathematics SRMUniversity Kattankulathur603203，India，DepartmentofMathematics SRMUniversity，Kattankulathur603203，India，DepartmentofMathematics SRMUniversity，Kattankulathur603203，India |
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| 摘 要： | INTRODUCTION Transpiration cooling is a very effective process to protect certain structural elements like combustion chamber walls, exhaust nozzles, or gas turbine blades in turbojet and rocket engines, from the influence of hot gases. In view of this, Eckert (1958) obtained an exact solution of the plane couette flow with transpi-ration cooling. The problem remained 2D due to the uniform injection and suction applied at the porous plates. Flow and heat transfer along a plane wall with…
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| 关 键 词： | 粉尘颗粒物 摩擦力 多相流 流体力学 |
| 收稿时间： | 2006-08-11 |
| 修稿时间： | 2006-10-23 |
3D couette flow of dusty fluid with transpiration cooling |
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| GOVINDARAJAN A RAMAMURTHY V SUNDARAMMAL K.3D couette flow of dusty fluid with transpiration cooling[J].Journal of Zhejiang University Science,2007,8(2):313-322. |
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| Authors: | Govindarajan A Ramamurthy V Sundarammal K |
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| Institution: | (1) Department of Mathematics, SRM University, Kattankulathur, 603 203, India |
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| Abstract: | The couette dusty flow between two horizontal parallel porous flat plates with transverse sinusoidal injection of the dusty fluid at the stationary plate and its corresponding removal by constant suction through the plate in uniform motion was analyzed. Due to this type of injection velocity the dusty flow becomes 3D. Perturbation method is used to obtain the expressions for the velocity and temperature fields of both the fluid and dust. It was found that the velocity profiles of both the fluid and dust in the main flow direction decrease with the increase of the mass concentration of the dust particles, and those in cross flow direction increase with an increase in the mass concentration of the dust particles up to the middle of the channel and thereafter decrease with increase in mass concentration of the dust particles. The skin friction components Tx and Tz in the main flow and transverse directions respectively increase with an increase in the mass concentration of the dust particles (or) injection parameter. The heat transfer coefficient decreases with the increase of the injection parameter and increases with the increase in the mass concentration of the dust particles. |
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| Keywords: | Couette dusty flow 3D Transpiration cooling Transverse sinusoidal Injection/suction Dusty fluid Mass concen tration Relaxation time |
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