In order to prevent the horseshoe vortex and secondary flow losses in small supersonic turbines, the partial admission technique is used. It is obvious that the partially injection of flow creates a new type of loss which is called partial-admission loss. Therefore, in the design process, the partial-admission degree and flow injection configuration should be evaluated accurately.
To that end, it is necessary to produce the characteristic curves of the turbine in this condition. These curves are provided in the form of turbine performance parameters and represent the turbine behavior in different operational conditions. …