The sewage diffusion effect under deep water was carried out between different diffuser design parameters based on the hydraulic model test. According to test of length, riser spacing, number, nozzle horizontal azimuth angle and jet angle, specific need be determined comprehensively considering surface field, degree, project cost, etc. We used a coastal marine disposal in China as an example. a...

The study of interactions of jet into cross flow at different longitudinal and transverse angles of jet was studied. The following components were designed and constructed: a low velocity wind tunnel to produce the uniform flow, a flat plate with a traverse injection system to simulate the jet injection, and a spatial rake to measure the total pressure. The tests were carried out at longitudina...

Hydraulic fracturing creates slots on the coal surface through impact of high-pressure water jets, resulting in stress gradients surrounding coal, thereby inducing release and increasing gas extraction efficiency. It is an effective measure to prevent outbursts. Numerical simulations demonstrate that jets generate leading coal. These drive move gradually towards slots, releasing stress. The unl...

Nowadays, hydropower plays an essential role in the energy market. Due to their fast response and regulation capacity, hydraulic turbines operate at off-design conditions with a high number of starts and stops. In this situation, dynamic loads and stresses over the structure are high, registering some failures over time, especially in the runner. Therefore, it is important to know the dynamic r...

The paper considers the technological scheme of hydraulic elevator installation, according to which water from a pressure tank is supplied by working pump well through two parallel pipelines: monitor with washing nozzle for destroying sand plug and supply pipeline that connected containing suction pipelines taking slurry cleaning single- double-column wells plugs methodology calculation selecti...

The study of interactions of jet into cross flow at different longitudinal and transverse angles of jet was studied. The following components were designed and constructed: a low velocity wind tunnel to produce the uniform flow, a flat plate with a traverse injection system to simulate the jet injection, and a spatial rake to measure the total pressure. The tests were carried out at longitudina...

Due to their high efficiency, low heat loss and associated sustainability advantages, impinging jets have been used extensively in marine engineering, geotechnical engineering other practices. In this paper, the flow structure impact characteristics of with different Reynolds numbers distances are systematically studied by Flow-3D based on PIV experiments. study, relevant state parameters dimen...

High-efficiency rock breaking by hydraulic jetting is the key to radial horizontal drilling technology. In order improve efficiency of jet in wells, based on LS-Dyna display dynamics, a numerical simulation model single-nozzle was established analyze influence different nozzle parameters rock-breaking effect. Then, spin multi-nozzle bit established, and rotation speeds effect analyzed. Finally,...