Preliminary study of transient simulation for nuclear heat release

In the experimental research of reactor thermohydraulic behavior on test facility, an electric heater is always used instead of a nuclear reactor. There are many inherent reactivity feedback in a real reactor, such as temperature coefficient feedback and void coefficient feedback, so when an electric heater is used as a nuclear fuel in a test facility, it is required to simulate the reactivity feedback. An analysis of effect of reactivity feedback is made and a method of simulating reactivity feedback is proposed