<div dir="ltr"><div><div><div><div>When I try to restart a FLASH 4.3 run with a central massive body and several sink particles in a surrounding disk, the central massive body doubles in mass, while the other sink particles restart with their correct masses. I have tried many variations on the sink cell parameters to try to fix this, to no avail.<br><br>Here are the relevant parameters in flash.par for starting the run:<br><br># sink particle parameters and Jeans refinement<br><br>#refine_var_1 = "none"<br>#refine_var_thresh = "dens"<br>#refineOnJeansLength = .true.<br>#jeans_ncells_ref = 8.0<br>#jeans_ncells_deref = 64.0<br>#refineOnSinkParticles = .true.<br><br>useParticles = .true.<br>useSinkParticles = .true.<br>sink_density_thresh = 1.0e-11 #<br>sink_accretion_radius = 6.0e12 # <br>sink_softening_radius = 6.0e12 # <br>#sink_softening_type_gas = "linear"<br>#sink_softening_type_sinks = "spline"<br>#sink_integrator = "leapfrog"<br>#sink_subdt_factor = 0.01<br>#sink_dt_factor = 0.5<br>sink_merging = .true. # .false.<br>sink_convergingFlowCheck = .true.<br>sink_potentialMinCheck = .false. # .true. <br>sink_jeansCheck = .true.<br>sink_negativeEtotCheck = .true.<br>sink_GasAccretionChecks = .false. # central sink mass accretion # .true.<br>#pt_maxPerProc = 500<br><br># initial central sink cell= 1 solar mass protostar<br>sim_sink_x = 0.0<br>sim_sink_y = 0.0<br>sim_sink_z = 0.0<br>sim_sink_vx = 0.0<br>sim_sink_vy = 0.0<br>sim_sink_vz = 0.0<br>sim_sink_mass = 1.989e33<br><br></div>If I do not comment out the initial central sink cell parameters (directly above) on the restart, the restart leads to a central body that is four times more massive than it should be. With those lines commented out, the central body still doubles in mass. The sink cell code runs fine except for this restart problem. <br><br></div>Any ideas about what the problem might be?<br><br></div>Thanks,<br></div>Alan Boss<br><div><div><div><div><div><div><div><div><div><br>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><pre><span></span><img src="https://docs.google.com/a/carnegiescience.edu/uc?id=0B2qkrJNFZK5EaFVUWGwxTTM2Z0k&export=download"><br><br>-----------------------------------------
Dr. Alan P. Boss<br>Department of Terrestrial Magnetism
Carnegie Institution for Science
5241 Broad Branch Road, N.W.
Washington, D.C. 20015-1305 U.S.A.
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Telephone: 1-202-478-8858
Fax: 1-202-478-8821
Home: <a href="http://home.dtm.ciw.edu/users/boss/" target="_blank">http://home.dtm.ciw.edu/users/boss/</a>
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