TLM method and acoustics
نویسندگان
چکیده
منابع مشابه
Vocal tract acoustics using the transmission line matrix (TLM) method
Most traditional theories of speech production are currently based on plane waves and on one-dimensional analysis. It i s however well-known that when the frequency of sound reaches a cut-on frequency, higher acoustical modes start to propagate and can become predominant. It is therefore important to evaluate the effects of these higher modes, especially in order to improve acoustical models of...
متن کاملNumerical Simulation of Penetration and Coupling Using the Tlm Method
{ The paper describes progress in the modelling of penetration and coupling in conngu-rations relevant to EMC. The application of the TLM method in modelling eeciently thin nite-conductivity panels and thin wires is outlined. Comparisons with experimental and theoretical results show that inexpensive numerical models are accurate enough for EMC studies and hence that whole system modelling is b...
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This paper describes a new subgridding approach with a view to improving the efficiency of full-wave simulation of electronic circuits. The proposed subgridding method has been incorporated into a full-wave variable-mesh finite-difference transmission line matrix (FD-TLM) simulator. By incorporating the proposed subgridding method, a speed-up of about 2 has been attained. The computational acce...
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The lattice Boltzmann method (LBM) has been proved to be a useful tool in many areas of computational fluid dynamics, including computational aero-acoustics (CAA). However, for historical reasons, its applications in CAA have been largely restricted to simulations of isothermal (Newtonian) sound waves. As the recent kinetic theory-based reformulation establishes a theoretical framework in which...
متن کاملA direct method to computational acoustics
The exact knowledge of the sound field within an enclosure is essential for a number of applications in electro-acoustics. Conventional methods for the assessment of room acoustics model the sound propagation in analogy to the propagation of light. More advanced computational methods rely on the numerical solution of the wave equation. A recently presented method is based on multidimensional wa...
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ژورنال
عنوان ژورنال: International Journal of Numerical Modelling: Electronic Networks, Devices and Fields
سال: 2001
ISSN: 0894-3370
DOI: 10.1002/jnm.405