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| Author | : |
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| Total Pages | : 78 |
| Release | : 1982 |
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| ISBN | : |
| Author | : James T. Howlett |
| Publisher | : |
| Total Pages | : 44 |
| Release | : 1992 |
| Genre | : Aerodynamics, Transonic |
| ISBN | : |
| Author | : James T. Howlett |
| Publisher | : |
| Total Pages | : 44 |
| Release | : 1992 |
| Genre | : |
| ISBN | : |
| Author | : James T. Howlett |
| Publisher | : |
| Total Pages | : 84 |
| Release | : 1987 |
| Genre | : Aerodynamics, Transonic |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 132 |
| Release | : 1992 |
| Genre | : Astronautics |
| ISBN | : |
| Author | : National Aeronautics and Space Adm Nasa |
| Publisher | : |
| Total Pages | : 44 |
| Release | : 2018-11 |
| Genre | : |
| ISBN | : 9781729430842 |
This paper presents a method for calculating viscous effects in two- and three-dimensional unsteady transonic flow fields. An integral boundary-layer method for turbulent viscous flow is coupled with the transonic small-disturbance potential equation in a quasi-steady manner. The viscous effects are modeled with Green's lag-entrainment equations for attached flow and an inverse boundary-layer method for flows that involve mild separation. The boundary-layer method is used stripwise to approximate three-dimensional effects. Applications are given for two-dimensional airfoils, aileron buzz, and a wing planform. Comparisons with inviscid calculations, other viscous calculation methods, and experimental data are presented. The results demonstrate that the present technique can economically and accurately calculate unsteady transonic flow fields that have viscous-inviscid interactions with mild flow separation. Howlett, James T. Langley Research Center RTOP 509-10-02-03...
| Author | : United States. National Aeronautics and Space Administration |
| Publisher | : |
| Total Pages | : 44 |
| Release | : 1992 |
| Genre | : Aeronautics |
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| Author | : |
| Publisher | : |
| Total Pages | : 1572 |
| Release | : 1992 |
| Genre | : Aeronautics |
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| Author | : George S. Deiwert |
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| Total Pages | : |
| Release | : 1977 |
| Genre | : |
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| Author | : U. R. Muller |
| Publisher | : |
| Total Pages | : 16 |
| Release | : 1992 |
| Genre | : |
| ISBN | : |
Progress in the development towards a 30 viscous-inviscid strong interaction method for computing unsteady transonic wing flow is reported. In the current version, an ADI-technique for solving the 3D unsteady Transonic Small Perturbation Equation (TSP) has been extended by incorporating an unsteady 2D integral boundary layer method and then simultaneously solving the viscous and inviscid flow equations in a stripwise fashion.
