[lb0331]

Hello, I am simulating the Joule-Thomson effect of air, but the simulation results are quite different from the experiment, I don't know what went wrong. The pressure and temperature measured by the experiment are taken as the boundary conditions, the data of the pressure gauge is the gauge pressure, the temperature is measured by the thermocouple, there is a certain speed at the inlet, but no data; The external of the pipeline is covered with thermal insulation material, which is regarded as an adiabatic process. See the attached picture for relevant data

When using fluent for steady-state simulation, select the density-based solver, select the k-w sst turbulence model, set the operating pressure to 0pa, ignore gravity, select the nist real gas model, use the pressure inlet and pressure outlet, and the reflux temperature at the outlet is default. The solution method uses the implicit, flux format Roe-fds, using hybrid initialization.

What I am confused about is whether the temperature measured by the imported thermocouple is static temperature or total temperature. If it is static temperature, is there any formula to find the total temperature? Can you give me some advice (with unknown speed)? Or where there are problems with the Settings to fix my simulation, I would be grateful