Table 5 Boundary condition settings.

From: Research on leakage and diffusion behavior of hydrogen doped natural gas in integrated pipeline corridors based on data drive

Object

Boundary type

Remark

Point of leakage

Quality Inlet

Mass flow of hydrogen-doped natural gas

Air inlet

Speed Inlet

Wind speed

Air outlet

Pressure Outlet

Standard atmosphere

Left and right channel

Pressure Outlet

Standard atmosphere

Pipeline

Wall

-

Top, bottom and side of pipe gallery

Wall

-

Cabin

Fluid domain

Initially air