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Mark Osterbrink August 18, 2000 11:26

2-D Flotran Problem
I'm trying to do a 2-D flow tran analysis of an airfoil close to the ground. The solution goes along fine, then the pressure starts to oscillate and it blows up. Any ideas as to what I can do to fix it? The boundary conditions are fixed velocities at all boundaries. Any ideas?

John C. Chien August 18, 2000 22:13

Re: 2-D Flotran Problem
(1). Have you asked the vendor's support engineer why this is happening? (2). About 10 years ago, I have written a 2-D Navier-Stokes code to compute flow over a car above the ground. Both flow over and under the car(2-D) were computed. It converged in about 10 min. on a PC/486. (3). So, it is likely that the problem is between you and the code and the vendor. agree? (4). Ask the support engineer to show you how to do it right.

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