Work

A Validation of the Junction Riemann Problem in Networks of Channels Under Transitory Flow Conditions

Year: 2025

Type: article

Abstract: Transitory states and supercritical regimes in channel junctions have been challenging to model using 1D models, and it has been common to resort to 2D models to locally solve networks of channels. In this paper, we present a methodology based on the Junction Riemann Problem that manages to include supercritical solutions by making use of suitable limiting coefficients. The method is compared against a pure 2D model in a series of test cases with challenging geometries that include transitory flow conditions. The results show that the method hereby presented is robust across all regimes and is able to capture the main features of wave propagation along a network of channels.

Source: Fluids

DOI: 10.3390/fluids10030053

Authors: Juan Mairal, Javier Murillo, Pilar Garcia-Navarro

Institutions: Universidad de Zaragoza, Instituto de Investigación en Ingeniería de Aragón

Language: English

Topic: Hydraulic flow and structures

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,172

Funder: Ministerio de Ciencia e Innovación