| ALGEBRAIC TURBULENCE MODEL WITH MEMORY FOR COMPUTATION OF 3-D TURBULENT BOUNDARY LAYERS WITH VALIDATION |
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| 作者姓名： | 忻鼎定 |
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| 作者单位： | InstituteofFluidMechanics,BeijingUniversityofAeronauticsandAstronautics,Beijing100083,China |
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| 基金项目： | National Natural Science F oundation of China !( No.91880 10 )，National Defense Science Foundation!( 95 J13 A .1.2 ) |
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| 摘 要： | Additional equations were found based on experiments for an algebraic turbulence model to improve the prediction of the behavior of three dimensional turbulent boundary layers by taking account of the effects of pressure gradient and the historical variation of eddy viscosity, so the model is with memory. Numerical calculation by solving boundary layer equations was carried.out for the five pressure driven three dimensional turbulent boundary layers developed on flat plates, swept-wing, and prolate spheroid in symmetrical plane. Comparing the computational results with the experimental data, it is obvious that the prediction will be more accurate if the proposed closure equations are used, especially for the turbulent shear stresses.
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| 关 键 词： | 边界层 紊流模型 三维计算 实验技术 |
ALGEBRAIC TURBULENCE MODEL WITH MEMORY FOR COMPUTATION OF 3-D TURBULENT BOUNDARY LAYERS WITH VALIDATION |
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| XIN Ding-ding.ALGEBRAIC TURBULENCE MODEL WITH MEMORY FOR COMPUTATION OF 3-D TURBULENT BOUNDARY LAYERS WITH VALIDATION[J].Chinese Journal of Aeronautics,2000,13(2):65-74. |
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| Authors: | XIN Ding-ding |
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| Abstract: | Additional equations were found based on experiments for an algebraic turbulence model to improve the prediction of the behavior of three dimensional turbulent boundary layers by taking account of the effects of pressure gradient and the historical variation of eddy viscosity, so the model is with memory. Numerical calculation by solving boundary layer equations was carried out for the five pressure driven three dimensional turbulent boundary layers developed on flat plates, swept wing, and prolate spheroid in symmetrical plane. Comparing the computational results with the experimental data, it is obvious that the prediction will be more accurate if the proposed closure equations are used, especially for the turbulent shear stresses. |
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| Keywords: | boundary layer turbulence model with memory three dimensional computation experimental technique |
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