A challegening fluid-solid problem
 

just imagine such a following case: a water-solid mulitphase problem,and the solid will melt during its flow,and the solid fraction is not neglectable (20% for instance).it is obvious that none of the provided models in fluent can be used directly to simulate such a case.the mixture model can not predict the secondary solid phase characteristic and the Euler model will not solve energy equation, and the DPM only accounts for the low-fraction situation,and in DPM all the six paticle laws do not inlude the solid melt case? who can give me some suggestions to simplify the problem?