Method for determining pressure slope ratio range of inlet of lower adit of rotational flow vertical shaft based on numerical simulation

• Main Authors: ZHANG XIAO, GAO MENGLU, WANG XINGLI, XIA HOUXING, FENG WEIXIAO, WANG XINQIANG, KE MINGHUI
• Format: Patent
• Language: Chinese; English
• Published: 18.07.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a method for determining a pressure slope ratio range of an adit inlet under a rotational flow vertical shaft based on numerical simulation, and belongs to the technical field of urban flood control and drainage hydrodynamics mathematical simulation. Firstly, an index representing the pressure slope size is put forward, and different pressure slope ratios can be set due to the unknown reasonable value range of the pressure slope ratio; the water level H and the pressure slope outlet flow velocity v of each operation condition library are extracted, then a water level-pressure slope ratio and energy dissipation rate-pressure slope ratio relation curve is established, a reasonable pressure slope ratio range is determined by looking up a curve chart, finally, pressure slope ratio values in the range are randomly taken for simulation calculation, a calculation result is compared with a chart query result, and the feasibility of the reasonable pressure slope ratio range is verified. Accordi