Efeito do refinamento da descrição da rugosidade em uma aproximação 2D para um rio de montanha: estudo de caso
Conteúdo do artigo principal
Resumo
A previsão do nível das águas em rios é importante para prevenir perdas econômicas, assim como vidas humanas causadas por inundações. Modelos hidráulicos são comumente usados ??para prever esses níveis de água e tomar medidas para mitigar os danos causados ??por inundações. Na presente investigação, foi analisada uma abordagem 2D para resolver as equações médias de profundidade de Reynolds Average Navier Stokes (RANS), chamada de Conveyance Estimation System (CES), para explorar suas capacidades preditivas. Este artigo apresenta uma extensão do estudo realizado por Knight et al. (2009). Da mesma forma, esta pesquisa explora uma caracterização detalhada do parâmetro de rugosidade e do número de zonas de rugosidade, produzindo vários cenários. O desempenho de cada cenário foi avaliado por meio de diferentes funções de ajuste usando curvas de descarga para comparação. A pesquisa mostra que o uso de uma descrição de rugosidade adequada, como um fator de rugosidade calibrado para toda a seção transversal ou um modelo de rugosidade de pedregulhos calibrados para o leito, junto com os valores de rugosidade obtidos em valores sugeridos do CES para bancos, produz um modelo ótimo para um rio de montanha.
Detalhes do artigo
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