Abstract: Computational fluid dynamics (CFD) was used to evaluate the flow field and thrust performance of a promising concept for reducing the noise at take-off of dual-stream turbofan nozzles. The ...

Abstract: Energy from hot gas discharge streams can be recovered by transfer directly to a coolant liquid in one of several available gas-liquid contacting devices. The design of the device is central ...

Abstract: Response characteristics of freely rising superpressured spheres of different configurations are discussed. Wind profile data measured by the superpressured balloon method, the smoke trail method, the AN/GMD-1 rawinsonde ...

Abstract: Vertically stratified stratospheric tracers such as methane and nitrous oxide tend to have constant mixing ratio surfaces that slope downward toward the poles in the meridional plane. The equilibrium tracer slope results ...

Abstract: The transient motion resulting when a rotating cylinder containing a stably stratified fluid system has its rotation rate impulsively changed is examined theoretically and in the laboratory for both a continuously stratified ...

Abstract: A semi-spectral numerical model is used to study the influence of a longitudinally varying gravity wave source on the general circulation of the winter mesosphere. The gravity wave source consists of stationary (topographic) ...