Reply To: Energy exchange via Transient Thermal / Fluent / System coupling

[Rahul]

Hello 
Please check your BCs from Fluent. 
It is very important to build up the coupled simulation in stages as opposed to setting up the 2-way coupled simulation right at the start. This document "General best practices for Coupled Analyses" describes this process and is available here: 
Building Up to a Coupled Analysis (ansys.com)