# Problem with hybrid initialisation

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 November 7, 2022, 19:06 Problem with hybrid initialisation #1 New Member   Ekaterina Join Date: Nov 2022 Posts: 1 Rep Power: 0 Hi! I need help to solve the problem when calculating the cooling of the flame tube. I see this warning: Checking case topology... -this case has inlets & outlets both -pressure information is not available at the boundaries, so it will be initialized with constant pressure Here's the detail i put while solving this question: SOLVER TYPE : Pressure Based Velocity Formulation : Absolute Time : Steady MODEL : k-w SST BOUNDARY CONDITION : 1. Inlet1: mass-flow-inlet (m = 0.001875, initial gauge pressure = 82500 Pa, T = 750 K); Inlet2: mass-flow-inlet (m = 0.0075, initial gauge pressure = 80500 Pa, T = 1750 K). 2. Outlet1: pressure-outlet ( Gauge pressure = 80000 Pa, T = 750) Outlet2: pressure-outlet ( Gauge pressure = 80000 Pa, T = 1750) Thank you!

 November 8, 2022, 21:20 #2 Senior Member   HECKMANN Frédéric Join Date: Jul 2010 Posts: 249 Rep Power: 17 Hybrid initialization is not a requirement and in many cases the standard initialization is recommended (see the manual for more details). Hybrid initialization simply computes a quick Eulerian solution to try to give a more realistic flow pattern than a simple homogeneous initialization. It is only here to help convergence, it does not affect the final solution. Simply ignore this message or switch to a standard initialization.