This paper deals with the discrete inverse problem in acoustics. It is assumed that a number
of acoustic sources are located at known spatial positions and that the acoustic pressure is …

Aeroacoustic measurements and analysis have been made for an unshrouded rotor partially
immersed in a planar equilibrium turbulent boundary layer at low Mach number. This …

Abstract Analysis of aerodynamic loading noise generated by unsteady rotating forces is of
great significance in aeroacoustics research. However, it is still difficult to obtain the position …

The singular-value decomposition (SVD) can be used to analyze the matrix of Green
functions relating the acoustic pressure at a number of field points to the strengths of a …

• Project description• Overview of numerical modelling techniques in acoustics• HRTFs and
the principle of reciprocity (simple/complex models)• Frequency response of baffled pinnae• …

Detailed measurements of the four-dimensional space time correlation function of a thick
turbulent boundary layer have been made and used as source terms for the prediction of …

Data analysis techniques were previously developed for rotating machinery that predicted
the far-eld radiation, inferred in ow characteristics, and de ned the near-eld/far-eld acoustic …

In general, the physics of the relationship between the pressure eld surrounding a rotating
propeller in subsonic ow and the ow characteristics is understood. However, quanti cation of …

Noise emissions from aircraft are of major concern to aircraft manufacturers. There are
various analytical, empirical and numerical tools to help in the design of quieter aircraft …

根据旋翼辐射的气动噪声求解气动声学反问题, 给定合理的旋翼表面载荷并结合声类比方法得到
观测点的信号, 以此进行表面载荷反演. 对建立的大型不适定性方程组采用奇异值分解结合正则 …