The Stationary, One-Way NITF and Time Dependent, One-Way NITF studies are available with the Nonisothermal Flow interfaces and the Conjugate Heat Transfer interfaces, which require the CFD Module or the Heat Transfer Module. The Frozen Rotor, One-Way NITF study is available with the Rotating Machinery, Nonisothermal Flow interfaces, which require the Mixer Module plus the CFD Module.

The Stationary, One-Way NITF () study is used for stationary nonisothermal flow computations where the temperature variations are so small that they do not affect the flow.

The study consists of two Stationary study steps, the first solving for the fluid velocity and pressure fields, and the second solving for the temperature field. If an additional physics interface is added, then it is automatically added to both study steps.

The Time Dependent, One-Way NITF () study is used for time-dependent nonisothermal flow computations where the temperature variations are so small that they do not affect the flow.

The study consists of two Time Dependent study steps, the first solving for the fluid velocity and pressure fields, and the second solving for the temperature field. If an additional physics interface is added, then it is automatically added to both study steps.

The Frozen Rotor, One-Way NITF () study is used for frozen rotor nonisothermal flow computations where the temperature variations are so small that they do not affect the flow.

The study consists of two Frozen Rotor study steps, the first solving for the fluid velocity and pressure fields, and the second solving for the temperature field. If an additional physics interface is added, then it is automatically added to both study steps.