Abstract: By using the turbulence model proposed by Dubois & Samain and Lichtenberg, a transport code is presented to simulate a particular sawtooth discharge in T-10 tokamak under Ohmic heating situation. A trigger condition is also coupled into the transport code. The numerical results show that in many respects those with turbulent model agree with the experiment results. In contrast, it was impossible to obtain satisfactory simulations with the reconnection model.

Key words: sawtooth oscillation, turbulence model, transport simulation