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Ann Dowling
Dame Ann Patricia Dowling (born 15 July 1952) is a British mechanical engineer who researches combustion, acoustics and vibration, focusing on efficient, low-emission combustion and reduced road vehicle and aircraft noise. Dowling is a Deputy Vice-Chancellor and Professor of Mechanical Engineering, and from 2009 to 2014 she was Head of the Department of Engineering at the University of Cambridge, where she was the first female professor in 1993.www.theukrc.com Women of Outstanding Achievement:Professor Dame Ann Dowling She was President of the Royal Academy of Engineering from 2014 to 2019, the Academy's first female president. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeroacoustics
Aeroacoustics is a branch of acoustics that studies noise generation via either turbulent fluid motion or aerodynamic forces interacting with surfaces. Noise generation can also be associated with periodically varying flows. A notable example of this phenomenon is the Aeolian tones produced by wind blowing over fixed objects. Although no complete scientific theory of the generation of noise by aerodynamic flows has been established, most practical aeroacoustic analysis relies upon the so-called ''aeroacoustic analogy'', proposed by Sir James Lighthill in the 1950s while at the University of Manchester. whereby the governing equations of motion of the fluid are coerced into a form reminiscent of the wave equation of "classical" (i.e. linear) acoustics in the left-hand side with the remaining terms as sources in the right-hand side. History The modern discipline of aeroacoustics can be said to have originated with the first publication of Lighthill in the early 1950s, when noise ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roadway Noise
Roadway noise is the collective sound energy emanating from motor vehicles. It consists chiefly of road surface, tire, engine/transmission, aerodynamic, and braking elements. Noise of rolling tires driving on pavement is found to be the biggest contributor of highway noise and increases with higher vehicle speeds. In developed and developing countries, roadway noise contributes a proportionately large share of the total societal noise pollution. In the U.S., it contributes more to environmental noise exposure than any other noise source. History Roadway noise began to be measured in a widespread manner in the 1960s, as computer modeling of this phenomenon began to become meaningful. After passage of the National Environmental Policy Act and Noise Control Act, the demand for detailed analysis soared, and decision makers began to look to acoustical scientists for answers regarding the planning of new roadways and the design of noise mitigation. Partial bans on motor vehic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
