Author(s): Mostafa Taherian; Seyedahmadreza Saeidihosseini; Majid Mohammadian
Keywords: Outfall discharge; Densely buoyant jets in cross-flows; OpenFOAM simulation; Reynolds-averaged Navier-Stokes approaches
Abstract: The positive environmental impacts obtained through the use of submerged outfall discharges of dense effluents have recently gained considerable attention by both regulatory bodies and research groups. Since the receiving water bodies are rarely stationary, investigating the buoyant outfall discharge performance while issuing into cross-flow, which has been known as the buoyant jet in cross-flow (JICF), is of significant importance. Therefore, there is a need for a deeper understanding and more accurate design guidelines for this type of outfall. Herein, a numerical study is presented by using the computational codes developed with OpenFOAM which is based on the finite volume technique. The accuracy of the model is verified by the comparison of the simulation results and experimental data obtained from the literature. Moreover, the jet trajectory and dilution behavior of dense jets are numerically investigated with employing different Reynolds-averaged Navier-Stokes (RANS) modeling approaches. Based on the findings of this study, the presented realizable k-ε model compared to other models shows quite well potential to simulate the flow behavior and dilution performance of densely buoyant JICFs.