| Popis: |
The effect of influence of the parameters of similarity on the value of the exergy for supersonic flow in a channel of variable section with a pulsed-periodic energy supply is studied. The specific force acting on the walls of the expanding channel in dependence on the position, length of the zone of pulse-periodic energy supply, the Strouhal number and the Mach number flow is investigated. The following correlation is established: the specific force is increased and the exergy of the flow is used better with decreasing length of the zone of energy supply and with decreasing of distance between the zone and the place of beginning of the channel expansion. Raising the temperature at a single energy supply pulse may be considered as factor which increases specific force. It takes place at lower frequencies |
