{"id":288893,"date":"2023-06-15T10:47:21","date_gmt":"2023-06-15T10:47:21","guid":{"rendered":"\/forum\/forums\/topic\/stabilization-error-for-two-phase-flow-simulation\/"},"modified":"2023-06-15T10:47:21","modified_gmt":"2023-06-15T10:47:21","slug":"stabilization-error-for-two-phase-flow-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/stabilization-error-for-two-phase-flow-simulation\/","title":{"rendered":"Stabilization error for two-phase flow simulation"},"content":{"rendered":"
I am trying to simulate a heat pipe in (3D) which has three sections:<\/div>\n
 <\/div>\n
Evaporator – Constant heat flux<\/strong> (boundary conditions)
Condensor – Constant temperature (boundary conditions)
Adiabatic section – Zero heat flux (boundary conditions)<\/div>\n
I am using VOF multiphase model -> Evaporation – condensation model -> Lee model.<\/p>\n

Transient simulation with gravity and implicit body force formulation.<\/p>\n

Time step size = 0.0001 (1E-04).<\/strong><\/div>\n

 <\/div>\n
The simulation runs well for about 10-12 seconds of flow time but then it stops due to this error<\/div>\n
 <\/div>\n
“Divergence detected in AMG solver: pressure correction        Stabilizing temperature to enhance linear solver robustness.<\/span><\/em><\/p>\n

        Stabilizing temperature using GMRES to enhance linear solver robustness.<\/em><\/p>\n

Divergence detected in AMG solver: temperature<\/em>
Divergence detected in AMG solver: pressure correctio<\/em>n“<\/strong><\/p>\n

 Even though the simulation was running well for 10-12 seconds (100,000 time steps). What can be the possible reason for this error?<\/strong><\/p>\n<\/div>\n","protected":false},"template":"","class_list":["post-288893","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t