Shallow flow stability analysis with applications in hydraulics

6533b7cffe1ef96bd1257f0e

RESEARCH PRODUCT

Shallow flow stability analysis with applications in hydraulics

subject

Mathematical Modelling Matemātiskā modelēšana Matemātika

description

Šķidruma plūsmas stabilitātes analīze ar pielietojumiem hidraulikā Promocijas darbā tiek veikta plūsmu l ineārā un vāji nelineārā stabilitātes analīze seklos sajaukšanās slāņos. Plūsma tiek pieņemta kā nedaudz izliekta garenvirzienā . Berzes koe ficients mainās šķērsvirzienā . Lineārā stabilitāte tiek analizēta no laika un telpas aspektiem. Turklāt problēma ir vispārināta divu komponenšu seklām plūsmām. Tiek izskatītas divas pieejas vāji nelineārās stabilitātes analīzei. Parādīts, ka amplitūdas vie nādojums ir kompleksais Ginzburga - Landau vienādojums (paralēlu plūsmu pieņēmums). Otra pieeja ņem vērā lēno garenvirziena bāzes plūsmas izmaiņ u . Tiek iegū ts pirmās kārtas amplitūdas attīstības vienādojums . Atslēgas vārdi: Lineārā stabilitāte, vāji nelineā rā teorija, Ginzburga - Landau vienādojums

year	journal	country	edition	language
2016-01-01

https://dspace.lu.lv/dspace/handle/7/34501

PEPhysical Sciences and Engineering
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