Reverse flow in ANSYS FLUENT
 

Hi friends,
I am doing project on cylinder tank heat transfer.I prepared a vertical cylinder tank which is laying on the ground. I did meshing and also checked meshing quality.When i export it in fluent then there is a problem of reverse flow near to bottom of cylinder. I did more then 2000 iterations but there was a constant reverse flow coming. Will you tell me that is there a problem in meshing file or some other problem??? I can not attach .blk and .tin file here .So give me your email id so that i can send you it.