How to monitor the velocity along the center line of a cavity?

[ztdepztdep]

How to monitor the velocity along the center line of a cavity?

[marcinofulus]

Hi, you can access fields after_step callback which can be implemented in youtrLBSim class. e.g: def after_step(self, runner): every_n = 10000 if self.iteration % every_n == every_n - 1: self.need_sync_flag = True if self.iteration%every_n==0: vx,vy = runner._sim.vx, runner._sim.vy Remember that sailfish does not copy gpu fields every step to host, so it has to know one step ahead to do so. Also if every is smaller than 100-1000 - the speed will be also smaller. the best mk

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