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<p>Dear all,</p>
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<div>I have recently changed my hydro simulations to the Refluxing
strategy implemented by Erik Schnetter. For this I have changed
the standard configuration to a <b>cell centred refinement,
staggered boundaries and low order spatial prolongation for the
hydro variables</b>. Since then I experience problems with BSSN
or, more specifically, the QuasilocalMeasures thorn (a=0.9 black
hole). After an initially fine behaviour, <b>no Eigenvector with
value one is found and the spacetime gradually crashes</b>. </div>
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<div>I am still puzzled where this is coming from. Does anybody have
some experience with the combination spacetime evolution + hydro
refluxing, i.e. the somewhat different grid setup? I would be glad
for any input to see where I start to fix my work.</div>
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<div>Thank you very much and my best from Valencia </div>
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<div>Jens <br>
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