Viscous Mixing of Two-dimensional Jets with Particular Reference to Jets in Ground Proximity
| Author | : Frost Engineering Development Corp |
| Publisher | : |
| Total Pages | : 97 |
| Release | : 1964 |
| Genre | : |
| ISBN | : |
Viscous Mixing Of Two Dimensional Jets With Particular Reference To Jets In Ground Proximity
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Viscous Mixing of Two-dimensional Jets with Particular Reference to Jets in Ground Proximity
| Author | : William E. Sickles |
| Publisher | : |
| Total Pages | : 111 |
| Release | : 1964 |
| Genre | : |
| ISBN | : |
Existing jet mixing theory is reviewed and compared with available experimental results. Simple mixing equations are developed and used to determine the total pressure variation in a two-dimensional jet and the effect of a static pressure change on momentum flux. The effects of free-air entrainment are studied and potential flow solutions given for three particular cases. A method of calculating the lift loss due to vortices arising from viscous mixing is derived and gives good agreement with experiment. The effect of jet mixing on cushion pressure is investigated, using two approaches. The mixing equations are used to estimate total head loss in a recirculating jet and found to agree with experiment. The report concludes with some experimental observations of the static pressure distribution near a complex two-dimensional nozzle. (Author).
Viscous and Forward Speed Effects on Unbalanced Jets in Ground Proximity
| Author | : |
| Publisher | : |
| Total Pages | : 42 |
| Release | : 1963 |
| Genre | : |
| ISBN | : |
This is an interim report on a theoretical investigation of the flow of air jets in ground proximity. A previous report presented a theory which included the effects of viscosity on a two-dimensional wall jet. The theory was found to be adequate for the hovering mode. This report extends the theory to iclude the cases of forward velocity and small angular displacements in hover. The theory indicates that the vortices or vortex-type flow induced by the viscosity of the air jets is of some importance to the stability of the annular jet Ground Effect Machine. The investigation is continuing with experiments to confirm the assumed vortical flow pattern. (Author).
Analysis of the Mixing Region for a Two-dimensional Jet Injected at an Angle to a Moving Stream
| Author | : Willis Braun |
| Publisher | : |
| Total Pages | : 36 |
| Release | : 1969 |
| Genre | : Functions of complex variables |
| ISBN | : |
Numerical analysis of laminar and turbulent mixing region for two dimensional jet injected at angle to moving stream.
Experimental Investigation of the Viscous Effects on Balanced Jets in Ground Proximity
| Author | : C. C. Hsu |
| Publisher | : |
| Total Pages | : 33 |
| Release | : 1963 |
| Genre | : |
| ISBN | : |
An experimental investigation was made of the flow field beneath a two-dimensional ground effect machine and in the vicinity of its peripheral jet for various nozzle heights. The shape and location of impingement on the ground of the dividing streamline were determined, measurements of the approximate size and shape of the base vortex were made along with vorticity and velocity measurements, and measurements of pressures along the base of the machine were made. All of these experimental results are compared with the theory presented in a previous report. (Author).
