Method for increasing an entropy flow in a turbomachine

A method for operating a turbomachine, the method comprising:

• guiding a fluid through the turbomachine to transmit kinetic energy from the fluid to the turbomachine, wherein
• the fluid or at least one fluid component of the fluid is compressible, and wherein the fluid is accelerated in a convergent nozzle, the convergent nozzle arranged directly upstream the turbomachine in the direction of fluid flow,
• a divergent nozzle is arranged directly downstream of the turbomachine in the direction of fluid flow,
• the flow velocity of the fluid, which is reduced in the turbomachine during the transmission of the kinetic energy, is increased directly downstream of the turbomachine by a force FB, generated by a force field and acting in the direction of flow, by converting potential energy of the fluid into kinetic energy of the fluid to such an extent that the pressure of the fluid, which is reduced in the turbomachine, is thereby increased again to at least 0.1 times the pressure of the fluid upstream of the turbomachine, and
• the force FB acting in the direction of flow is the gravitational force, a centrifugal force, a magnetic force, an electrical force or a mechanical force provided by a further turbomachine.