SUITABILITY OF WEAKLY NONLINEAR ANALYSIS TO MODE REDUCTION PROCESS OF DOUBLE-ROW BARS

Autor:	Takashi Kuwamura, Yasuharu Watanabe
Rok vydání:	2005
Předmět:	Bar (music) business.industry Organic Chemistry Mode (statistics) Process (computing) Perturbation (astronomy) Mechanics Structural engineering Biochemistry Nonlinear system Wavelength Growth rate Reduction (mathematics) business Mathematics
Zdroj:	PROCEEDINGS OF HYDRAULIC ENGINEERING. 49:943-948
ISSN:	1884-9172 0916-7374
DOI:	10.2208/prohe.49.943
Popis:	Weakly nonlinear analysis was adapted to the hydraulic experiments in order to clarify the mechanisms of mode reduction process of sand bars. Hydraulic conditions of this analysis were set large width-depth ratio. The following facts became clear by this research. Initial bar growth rate must be calculated precisely when the mode reduction process is considered. The bar wavelength which passes through the mode reduction process of bar formation can be calculate by the linear stability analysis. The weakly nonlinear analysis can predict the mode reduction process of bars when the perturbation parameter is less than 1. This analysis shows good agreement on the contribution of each bar mode element to the bed formation.Although the growth rate expansion method has a mathematical problem applying to the multiple bar formation process, this analysis shows good agreement on the hydraulic experimental results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d7ded9b5a7a35663c29f3fe847e9fb42 https://doi.org/10.2208/prohe.49.943 Zobrazit plný text záznamu