This Phase II project validated a state-of-the-art LES model, coupled with a Ffowcs Williams-Hawkings (FW-H) far-field acoustic solver, to support the development of advanced engine concepts. These concepts include innovative flow control strategies to attenuate jet noise emissions. The end-to-end LES/ FW-H noise prediction model was demonstrated and validated by applying it to rectangular nozzle designs with a high aspect ratio. The model also was validated against acoustic and flow-field data from a realistic jet-pylon experiment, thereby significantly advancing the state of the art for LES
A series of convergent rectangular nozzles of aspect ratios 2:1, 4:1, and 8:1 were constructed with ...
Current research programs directed at supersonic engine exhaust noise reduction are demonstrating be...
The major techniques for measuring jet noise have significant drawbacks, especially when including e...
The problem of intense sound radiation from supersonic jets is a concern for both civil and military...
The hot supersonic exhausts of gas turbine engines on mil-itary aircraft generate dangerously high n...
Turbulent jet large-eddy simulations (LES) are performed at Mach 0.9 and Reynolds number of 106. For...
Development of concepts for reduction of jet noise has relied heavily on expensive experimental test...
AbstractModern military aircraft jet engines are designed with variable-geometry nozzles to provide ...
The new source model was combined with the original sound propagation model developed for rectangula...
Stricter noise regulations for commercial and military aircraft have increased interest in noise red...
The ability to predict jet noise is crucial for the aviation industry, particularly in order to meet...
The field of jet noise has become one of most active areas of research due to increasingly stringent...
In this paper, we use Large Eddy Simulations (LES) in combination with the Ffowcs Williams - Hawking...
This paper covers far-field acoustic measurements of a family of rectangular nozzles with aspect rat...
AbstractResults from recent LES studies of high-speed jet flows and its near and far-field noise (Me...
A series of convergent rectangular nozzles of aspect ratios 2:1, 4:1, and 8:1 were constructed with ...
Current research programs directed at supersonic engine exhaust noise reduction are demonstrating be...
The major techniques for measuring jet noise have significant drawbacks, especially when including e...
The problem of intense sound radiation from supersonic jets is a concern for both civil and military...
The hot supersonic exhausts of gas turbine engines on mil-itary aircraft generate dangerously high n...
Turbulent jet large-eddy simulations (LES) are performed at Mach 0.9 and Reynolds number of 106. For...
Development of concepts for reduction of jet noise has relied heavily on expensive experimental test...
AbstractModern military aircraft jet engines are designed with variable-geometry nozzles to provide ...
The new source model was combined with the original sound propagation model developed for rectangula...
Stricter noise regulations for commercial and military aircraft have increased interest in noise red...
The ability to predict jet noise is crucial for the aviation industry, particularly in order to meet...
The field of jet noise has become one of most active areas of research due to increasingly stringent...
In this paper, we use Large Eddy Simulations (LES) in combination with the Ffowcs Williams - Hawking...
This paper covers far-field acoustic measurements of a family of rectangular nozzles with aspect rat...
AbstractResults from recent LES studies of high-speed jet flows and its near and far-field noise (Me...
A series of convergent rectangular nozzles of aspect ratios 2:1, 4:1, and 8:1 were constructed with ...
Current research programs directed at supersonic engine exhaust noise reduction are demonstrating be...
The major techniques for measuring jet noise have significant drawbacks, especially when including e...