2026-10-14T05:35:15Z https://api.figshare.com/v2/oai

oai:figshare.com:article/34035777 2026-09-30T17:40:28Z category_1 category_4 category_146 category_915 category_12 category_15 category_21 category_873 category_734 category_64 category_132 portal_5 item_type_1 month_year_09_2026

<p>Geometry of the rectangular waveguide.</p> Muna Elsadig (25145379) Muhammad Safdar (1474231) Hala H. Taha (22838328) Muhammad Afzal (83943) Biophysics Biochemistry Space Science Physical Sciences not elsewhere classified Cell Biology Neuroscience Biotechnology Chemical Sciences not elsewhere classified Biological Sciences not elsewhere classified Cancer Infectious Diseases whose projection yields wavepacket &# 8211 wall cosine modes truncation convergence study transient treatment follows precomputed wavenumber grid form coupling matrix every matching plane cavity hybrid resonances block linear system power fluxes entering absorbed power fraction weighted matrix product broadband acoustic pulse membrane &# 8211 dependent acoustic scattering incident power vector product pulse energy dependent propagation dependent field xlink "> wise reconstruction velocity continuity single gaussian reflection regimes porous segments porous model porous filler porous core maximum absorption lossless limit fourier approach field splits dissipative decay dissipation audit computational framework centre line <p>Air-filled regions are shaded light blue and the porous core is shaded tan. The solid black lines at are the rigid duct walls; the wavy blue profiles at are the clamped flexible membrane strips; the red dashed lines at are the stationary air-porous interfaces. Dotted red lines mark the Cartesian axes through the origin, and tick marks at and identify the five region boundaries. The black arrow indicates the direction of the incident wave.</p> 2026-09-30T17:40:25Z Image Figure 10.1371/journal.pone.0358579.g001 https://figshare.com/articles/figure/_p_Geometry_of_the_rectangular_waveguide_p_/34035777 CC BY 4.0