We study heat transport in magnetic island in Tokamak. As electron cyclotron resonance heating (ECRH) has good locality it is used to simulate ECRH plasmas for local Gaussian heat source in magnetic island. In the case of simultaneous existence of background heat source and local Gaussian heat source, variation of radial electron temperature distribution and heat transport in local Gaussian heat source are studied. Analysis is made on influence of local Gaussian heat source on temperature perturbation and magnetic island constraint energy.

Basic idea and physical models in DIVIMP are introduced and DIVIMP modelling of C impurity production and transport properties in edge plasma of EAST machine with ohmic heating are provided. Simulation results show favorable consistency with experimental measurements, demonstrating that the models coupled in DIVIMP are suitable for interpretive and predictive modelling of impurity transport in EAST machine. Transport properties of W impurity in EAST with heating power as high as 8MW are also predicted by DIVIMP modelling.