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N-S EQUATION CALCULATIONS ON multi-element airfoils WITH ZONAL PATCHED GRIDS

Transactions of Nanjing University of Aeronautics and Astronautics 2003年第2期20卷 155-158页

作者：郭同庆陆志良南京航空航天大学航空宇航学院

For a complex flow about multi-element airfoils a mixed grid method is set up. C-type grids are produced on each element′s body and in their wakes at first, O-type grids are given in the outmost area, and H-type grids are used in middle additional areas. An algebra method is used to produce the initial grids in each area. And the girds are optimized by elliptical differential equation method. Then C-O-H zonal patched grids around multi-element airfoils are produced automatically and efficiently. A time accurate finite-volume integration method is used to solve the compressible laminar and turbulent Navier-Stokes (N-S) equations on the grids. Computational results prove the method to be effective.

关键词： multi-element airfoils zonal patched grids finite-volume method N-S equations

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Numerical simulation of ice accretion prediction on multiple element airfoil

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Science China(Technological Sciences) 2011年第9期54卷 2296-2304页

作者： CAO YiHua ZHONG Guo MA Chao School of Aeronautical Science and Engineering Beijing University of Aeronautics and Astronautics Beijing 100191 China

For studying ice accretion on aircraft and helicopter airfoils,a modified model of the mass and heat transfer on icing surface was first proposed based on the classical Messinger *** an approach for predicting ice accretion on multi-element airfoils was set up through introducing the interpolation calculation of airflow field around the multi-element ***-ering the equivalent thermal power from anti-ice system,a method of the prediction of ice accretion under anti-ice situation was *** order to study the prediction of ice accretion on helicopter rotor,a numerical simulation method combining the computational fluid dynamics (CFD) technique with helicopter aerodynamics theory was set *** agreement between the results of numerical simulation and the experimental data indicates that the model and methods proposed in this paper are feasible and effective,and that they can lay the foundation of the research on the dynamics in icing condition and design of anti/de-ice system.

关键词： multi-element airfoils prediction of ice accretion numerical simulation hot air anti-ice system rotor icing

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