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===Years 1976 - 1978=== <table border="0" align="center" width="100%" cellpadding="2"> <tr> <td align="center" width="91%" colspan="3"> </td> <td align="center">[http://www.phys.lsu.edu/~tohline/ref_ref.html Pubs.] <font color="red">(rank)</font></td> </tr> <tr> <td align="right" rowspan="3" width="2%"> </td> <td align="center" bgcolor="lightblue" width="4%"> </td> <td align="left" width="85%"> <font color="red">Tohline's dissertation research</font> under the guidance of Peter Bodenheimer (UCSC) and David Black (NASA/Ames Research Center) was an early attempt to examine whether of not isothermal gas clouds whose mass exceeds the Jeans mass spontaneously fragment during a phase of free-fall collapse. The adopted Eulerian computational hydrodynamics scheme was first-order donor-cell based on the 2D (axisymmetric, cylindrical-coordinate) scheme described by Black & Bodenheimer (1976) but extended by Tohline to a 3D grid; a typical simulation was carried out on the [https://en.wikipedia.org/wiki/CDC_7600 CDC 7600] at NASA/Ames and involved 30<sup>3</sup> ∼ 3 × 10<sup>4</sup> grid cells. </td> <td align="center" rowspan="3"> <b>[</b>[https://ui.adsabs.harvard.edu/abs/1978PhDT.........6T/abstract PhD]<b>]</b><br /> <b>[</b>[https://ui.adsabs.harvard.edu/abs/1980ApJ...235..866T/abstract 4]<b>]</b> <font color="red">(15<sup>th</sup>)</font><br /> <b>[</b>[https://ui.adsabs.harvard.edu/abs/1980ApJ...236..160T/abstract 5]<b>]</b><br /> <b>[</b>[https://ui.adsabs.harvard.edu/abs/1980ApJ...242..209B/abstract 7]<b>] <font color="red">(14<sup>th</sup>)</font></b> </td> </tr> <tr> <td align="center" bgcolor="yellow"> </td> <td align="left"> At each integration time step of a simulation, the self-consistently determined, time-dependent ''Newtonian'' gravitational potential was determined by combining (1) an FFT technique in the azimuthal coordinate direction, with (2) a Buneman Cyclic Reduction technique in R and Z. </td> </tr> <tr> <td align="center" bgcolor="white"> </td> <td align="left"> <font color="red">Richard Durisen</font> — a NASA/Ames postdoc at the time — said to me something along the lines of, "Hey! When you finish developing that hydrocode, let's get together and examine the dynamical stability of rapidly rotating, equilibrium configurations." </td> </tr> </table>
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