User contributions for Joel2

18:1918:19, 4 July 2024 diff hist +1 Appendix/Ramblings/HybridSchemeOld →Step 3 current
18:1718:17, 4 July 2024 diff hist +1 Appendix/Ramblings/HybridSchemeOld →Angular Momentum Conservation
18:1618:16, 4 July 2024 diff hist −16 Appendix/Ramblings/HybridSchemeOld →Angular Momentum Conservation
18:1118:11, 4 July 2024 diff hist −2 Appendix/Ramblings/HybridSchemeOld →Preface
18:1018:10, 4 July 2024 diff hist +95,864 N Appendix/Ramblings/HybridSchemeOld Created page with "__FORCETOC__  =Hybrid Advection Scheme= ==Preface== ''March 1, 2014'' by Joel E. Tohline <full preface> … This seemed too good to be true. The discovered code modification would allow us to conserve angular momentum very accurately and, at the same time, allow us to use a rotating grid and thereby minimize numerical diffusion … <read more> In his dissertation research, Jay Call..."
18:0718:07, 4 July 2024 diff hist +14,877 N PGE/AStarScheme Created page with "__FORCETOC__  =Hybrid Advection Scheme (Background)= ''March 1, 2014'' by Joel E. Tohline As is mentioned in the preface to our primary discussion of the Hybrid Advection Scheme, my early notes on this topic were included in my earliest version of this web-based H_Book. The relevant page can be accessed [http://www.phys.lsu.edu/astro/H_Book.current/Context/PGE/angmom.conserve.html via this..." current
18:0518:05, 4 July 2024 diff hist +5,039 N PGE/HybridSchemePreface Created page with "__FORCETOC__  =Hybrid Advection Scheme (Preface)= Go to: Hybrid Advection Scheme ''March 1, 2014'' by Joel E. Tohline Throughout my research career, I have sought new or modified techniques and algorithms that would allow my group to perform more accurate numerical simulations of astrophysical fluid flows. At the beginning — following the advice of my dissertation co-advisors, Pete..." current
17:5817:58, 4 July 2024 diff hist +8,308 N Appendix/PolytropicBinaries Created page with "__FORCETOC__  =Polytropic Models of Close Binary Star Systems= Over the past half-a-dozen years, Patrick Motl, Mario D'Souza, and Wes Even have used the Hachisu SCF technique to construct 3D equilibrium models of synchronously rotating, tidally distorted binary polytropes. To date, four of these models have been used extensively as initial states for our dynamical simulations of binary mass-transfer. Various properties of these f..." current
17:3817:38, 4 July 2024 diff hist +8,472 N Appendix/Ramblings/Photosphere Created page with "__FORCETOC__  ==Locating the Photosphere of Stably Accreting Double White Dwarf Binaries== ===Context=== At our regularly scheduled astrophysics group meeting on Monday, 2 May 2011, Juhan Frank and I started debating the answer to the following question: What should the photospheric radius be of the common envelope that surrounds a stably accreting, double white dwarf (DWD) binary? That is, does an accreting DWD binary that is des..." current
17:3717:37, 4 July 2024 diff hist +21,045 N Appendix/Ramblings/Radiation/InitialTemperatures Created page with "__FORCETOC__  =Initial Temperature Distributions= In an accompanying Wiki page we've discussed in detail (or see the summary page) how to transform back and forth between cgs units and the dimensionless code units that have been adopted by Dominic Marcello in his radiation-hydro simulations of binary mass-transfer. Here w..." current
17:3517:35, 4 July 2024 diff hist +13,730 N Appendix/Ramblings/Radiation/SummaryScalings Created page with "__FORCETOC__  =Summary of Scalings= On an accompanying Wiki page we have explained how to interpret the set of dimensionless units that Dominic Marcello is using in his rad-hydrocode. The following tables summarize some of the mathematical relationships that have been derived in that accompanying discussion. <!-- ***************************************** * * * FIRST TABLE * * ***********..." current
17:2817:28, 4 July 2024 diff hist +36,440 N Appendix/Ramblings/Radiation/CodeUnits Created page with "__FORCETOC__  =Marcello's Radiation-Hydro Simulations= ==Determining Code Units== ===Logic Used by Dominic Marcello=== At our group meeting on 21 July 2010, Dominic explained how he had established the values of various coupling constants in his first, long, <math>q_0 = 0.7</math> simulations. In place of the physical constants, {{Math/C_GravitationalConstant}}, {{Math/C_SpeedOfLight}}, {{Math/C_GasConstant}}, and {{Math/C_Radiat..." current
15:2315:23, 4 July 2024 diff hist +24,976 N Apps/RotatingPolytropes/BarmodeLinearTimeDependent Created page with "__FORCETOC__  =Onset of Bar-mode Instability in Differentially Rotating, Axisymmetric Polytropes= {| class="CazesDissertation" style="float:left; margin-right: 20px; border-style: solid; border-width: 3px border-color: black" |- ! style="height: 125px; width: 125px; background-color:white;" |<b>Initially<br />Axisymmetric<br />& Differentially<br />Rotating<br />Polytropes</b>..." current
15:1915:19, 4 July 2024 diff hist +38,565 N Aps/MaclaurinSpheroidFreeFall Created page with "__FORCETOC__  =Free-Fall Collapse of an Homogeneous Spheroid= {| class="FreeFallSpheroid" style="float:left; margin-right: 20px; border-style: solid; border-width: 3px border-color: black" |- ! style="height: 125px; width: 125px; background-color:#ffff99;" |<b>Free-Fall<br />Collapse<br />of an<br />Homogeneous<br />Spheroid</b> |} <table border="0" cellpadding="3" align="center" wi..." current
15:0815:08, 4 July 2024 diff hist +11,608 N Jaycall/T3Coordinates/SpecialCase Created page with "__FORCETOC__  ==Coordinate Transformations== If the special case <math>q^2=2</math> is considered, it is possible to invert the coordinate transformations in closed form. The coordinate transformations and their inversions become <table align="center" border="0" cellpadding="2"> <tr> <td align="right"> <math> \lambda_1 </math> </td> <td align="center"> <math>\equiv</math> </td> <td align="left"> <math>\left( R^2+2z^2 \r..." current
15:0515:05, 4 July 2024 diff hist +12,902 N Appendix/Ramblings/T3Integrals/QuadraticCase Created page with "__FORCETOC__  =T3 Coordinates (continued)= On one accompanying wiki page we have introduced T3 Coordinates and on another we have described how Jay Call's Characteristic Vector applies to T3 Coordinates. Here we investigate the properties of our T3 Coordinate system in the sp..." current
14:5914:59, 4 July 2024 diff hist −39 Appendix/Ramblings/ConcentricEllipsoidalCoordinates →Concentric Ellipsoidal (T6) Coordinates current
14:5714:57, 4 July 2024 diff hist −10 Appendix/Ramblings/ConcentricEllipsoidalT8Coordinates →Concentric Ellipsoidal (T8) Coordinates current
14:5114:51, 4 July 2024 diff hist −26 Appendix/Ramblings/ConcentricEllipsoidalT8Coordinates →Kappa (κ8) Coordinates
14:4714:47, 4 July 2024 diff hist −13 Appendix/Ramblings/ConcentricEllipsoidalT8Coordinates →What is the Third Coordinate Function, λ3
14:2814:28, 4 July 2024 diff hist −1 Appendix/Ramblings/ConcentricEllipsoidalT8Coordinates →Associated h3 Scale Factor
14:2814:28, 4 July 2024 diff hist 0 N File:EUREKA 21Jan2021 sm.png No edit summary current
14:2614:26, 4 July 2024 diff hist −65 Appendix/Ramblings/ConcentricEllipsoidalT8Coordinates →Background
14:2314:23, 4 July 2024 diff hist −56 Appendix/Ramblings/ForOuShangli →Wiki_edits current
14:0914:09, 4 July 2024 diff hist +31,465 N Appendix/Ramblings/ForOuShangli Created page with "  =For Shangli Ou= In order to download any one of (a selected subset of) the COLLADA-based model files referenced below, go to … <table border="3" align="center" cellpadding="10"><tr><td align="center" bgcolor="red"> <table border="0" cellpadding="8" align="center"> <tr> <td align="center"> Appendix/Ramblings/COLLADA/RiemannSType|<font color="white" size..."
14:0314:03, 4 July 2024 diff hist +8,617 N Appendix/Ramblings/COLLADA/RiemannSType Created page with "__FORCETOC__   =COLLADA-based Models of Riemann S-Type Ellipsoids= <div align="center"><font color="darkgreen">(Initially posted January 2021)</font> </div> ==Instructions== Table 1 provides links to a variety of COLLADA-based animated 3D models that have been developed for use wi..." current
14:0014:00, 4 July 2024 diff hist +103 Appendix/Ramblings →Ramblings
13:5713:57, 4 July 2024 diff hist −1 3Dconfigurations/DescriptionOfRiemannTypeI →See Also current
13:5413:54, 4 July 2024 diff hist −1 ThreeDimensionalConfigurations/DescriptionOfRiemannTypeI →See Also current
13:5213:52, 4 July 2024 diff hist +10 ThreeDimensionalConfigurations/DescriptionOfRiemannTypeI →Description of Riemann Type I Ellipsoids
13:5113:51, 4 July 2024 diff hist +50,671 N ThreeDimensionalConfigurations/DescriptionOfRiemannTypeI Created page with "__FORCETOC__   =Description of Riemann Type I Ellipsoids= {| class="RiemannType1" style="float:left; margin-right: 20px; border-style: solid; border-width: 3px border-color: black" |- ! style="height: 125px; width: 125px; background-color:#ffeeee;" |<b>Type I<br />Riemann<br />Ellipsoids</b> |} A more succinct version of this..."
13:4613:46, 4 July 2024 diff hist +274 Appendix/Ramblings →Ramblings
13:2713:27, 4 July 2024 diff hist 0 Appendix/Ramblings →Ramblings
13:0213:02, 4 July 2024 diff hist 0 N File:CropTopB.png No edit summary current
13:0213:02, 4 July 2024 diff hist 0 N File:WolframAlphaTorusVolume.png No edit summary current

19:2619:26, 3 July 2024 diff hist +94 Appendix/Ramblings →Ramblings
19:2119:21, 3 July 2024 diff hist 0 N File:YZplaneXm085.png No edit summary current
19:2019:20, 3 July 2024 diff hist 0 N File:YZplane3.png No edit summary current
19:1419:14, 3 July 2024 diff hist +197 ThreeDimensionalConfigurations/CAREs →See Also current
19:1219:12, 3 July 2024 diff hist +91,756 N ThreeDimensionalConfigurations/ChallengesPt6 Created page with "__FORCETOC__  =Challenges Constructing Ellipsoidal-Like Configurations (Pt. 6)= This chapter has been created in February 2022, after letting this discussion lie dormant for close to one year. We begin the chapter by grabbing large segments of our earlier derivations found primarily in the "Ramblings" chapter titled, ThreeDimensionalConfigurations/ChallengesPt4|''Construction..." current
19:1019:10, 3 July 2024 diff hist +33,572 N ThreeDimensionalConfigurations/ChallengesPt5 Created page with "__FORCETOC__  =Challenges Constructing Ellipsoidal-Like Configurations (Pt. 5)= This chapter extends the accompanying chapters titled, ''Construction Challenges (Pt. 1)'', ''(Pt. 2)'', ''(Pt. 3)'', and ThreeDimensionalConfigurations/Ch..." current
19:0919:09, 3 July 2024 diff hist +74,710 N ThreeDimensionalConfigurations/ChallengesPt4 Created page with "__FORCETOC__  =Challenges Constructing Ellipsoidal-Like Configurations (Pt. 4)= This chapter extends the accompanying chapters titled, ''Construction Challenges (Pt. 1)'', ''(Pt. 2)'', and ''(Pt. 3)''. The focus here is on firming up ou..." current
19:0719:07, 3 July 2024 diff hist +27,345 N ThreeDimensionalConfigurations/ChallengesPt3 Created page with "__FORCETOC__  =Challenges Constructing Ellipsoidal-Like Configurations (Pt. 3)= This chapter extends the accompanying chapters titled, ''Construction Challenges (Pt. 1)'' and ''(Pt. 2)''. The focus here is on firming up our understanding of the relationships between various "tilted" C..." current
19:0619:06, 3 July 2024 diff hist +65,761 N ThreeDimensionalConfigurations/ChallengesPt2 Created page with "__FORCETOC__  =Challenges Constructing Ellipsoidal-Like Configurations (Pt. 2)= This chapter extends an accompanying chapter titled, ''Construction Challenges (Pt. 1)''. The focus here is on an SCF technique that will incorporate specification of a Lagrangian flow-flied. ==Motivation== ===Where Are We Headed?=== In a ThreeDimensi..." current
18:4718:47, 3 July 2024 diff hist +160,200 N ThreeDimensionalConfigurations/Challenges Created page with "__FORCETOC__  =Challenges Constructing Ellipsoidal-Like Configurations= First, let's review the three different approaches that we have described for constructing Riemann S-type ellipsoids. Then let's see how these relate to the technique that has been used to construct infinitesimally thin, nonaxisymmetric disks. ==Riemann S-type Ellipsoids== Usually, the density, <math>~\r..." current
18:2618:26, 3 July 2024 diff hist 0 N File:PrimedCoordinates3.png No edit summary current
18:2418:24, 3 July 2024 diff hist 0 N File:EFEfig17firstSmall.png No edit summary current
18:2218:22, 3 July 2024 diff hist 0 N File:F McA.png No edit summary current
18:1218:12, 3 July 2024 diff hist +9,062 N ThreeDimensionalConfigurations/CAREs Created page with "__FORCETOC__  =New Thoughts Regarding the Formation of Binary Stars= {| class="CAREs" style="float:left; margin-right: 20px; border-style: solid; border-width: 3px border-color: black" |- ! style="height: 125px; width: 125px; background-color:white;" |<b>Thoughts<br />&<br />Challenges</b> |} It is February, 2020 and I hav..."
15:1915:19, 3 July 2024 diff hist +14 ThreeDimensionalConfigurations/RiemannTypeI →Example b1.25c0.470 current

User contributions for Joel2

4 July 2024

3 July 2024

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