Thanks Bill, that was really helpful. Actually I've another question about the smoothed-polygon mapping. I usually create them with a routine similar to the following one: *********************************** smoothedPolygon vertices 5 0. -0.025 1.0 -0.025 1.0 0.025 0. 0.025 0. -0.025 n-dist fixed normal distance -1.0 lines 250,150 boundary conditions -1, -1, 1, 0 n-stretch 2. 10. 0.00001 exit *********************************** and I think that the leading edge should be in the origin. Is that so, or the smooth function makes the mapping a bit "longer" and it is somehow shifted? I do appreciate your help, Alessandro Date: Thu, 15 Dec 2011 14:52:24 -0800 From: henshaw@xxxxxxxx To: overture@xxxxxxxxxxxxx Subject: [overture] Re: re-starting simulations Hi Alessandro, When you restart from a showfile the properties of the moving bodies are also read from the showfile, including the constraint. Unfortunately there is currently no easy way to change these values. I will add an option to allow changes. In the mean time, as a work around you could try one of these options: Option 1. (not sure if this really woks or not) 1(a) restart with motion OFF and save the solution at t=0 in a new show file. 1(b) restart with motion ON using the show file from step 1(a). Option 2. Edit the file cg/common/moving/src/RigidBodyMotion.C and change the "get" function and turn off the constraint after it is read in from the show file: (around line 1680) subDir.get(temp,"positionConstraint"); positionConstraint=(PositionConstraintEnum)temp; positionConstraint=positionHasNoConstraint; // **** add me *** I hope that helps, Bill. Alessandro Orchini wrote: Hi all, I run a simulation in which i had only 1 degree of freedom, and now I want to begin a new simulation starting from the final conditions of the first one, but with 3 degree of freedom. If I use the option "initial condition - read from a show file" does overture set the same degree of freedom of the old simulation (e.g., position is constrained to a line) or this is a user choice? Thanks! Alessandro