In this paper,we consider the macroscopic quantum tunnelling and self-trapping phenomena of Bose-Einstein condensates (BECs) with three-body recombination losses and atoms feeding from thermal cloud in triple-well potential.Using the three-mode approximation,three coupled Gross-Pitaevskii equations (GPEs),which describe the dynamics of the system,are obtained.The corresponding numerical results reveal some interesting characteristics of BECs for different scattering lengths.The self-trapping and quantum tunnelling both are found in zero-phase and π-phase modes.Furthermore,we observe the quantum beating phenomenon and the resonance character during the self-trapping and quantum tunnelling.It is also shown that the initial phase has a significant effect on the dynamics of the system.
