Fast Noise Diagnosis Technology - Theoretical and Engineering Application Research of HELS Method

Author: Yang Ruiqiang
Publisher:
Publish Date: 2006-09-01
Features: This book provides a detailed introduction to the concept and engineering application research of the rapid acoustic diagnosis technology - HELS method. The main contents include: introducing the traditional HELS method using spherical harmonics as independent functions, then using cylindrical wave functions, point sources, dipole sources, and long-rotated ellipsoidal functions to replace spherical harmonics as independent functions, and verifying with examples; defining the applicable scope of various HELS methods through specific examples; analyzing the limitations of the HELS method and proposing corresponding countermeasures. Combining the acoustic infinite element method, a new rapid noise diagnosis technology is proposed based on the HELS method. This book can provide a basis for manufacturing new noise analysis instruments and assist in rapid noise diagnosis in the field of engineering fault diagnosis and acoustics research. It is suitable for technical personnel engaged in acoustics research and engineering application fields for reading and reference, and can also serve as supplementary teaching material for graduate students in acoustics and mechanical engineering.