taukh_mod.f

35 lines · 1 definitions · on GitHub (7be4133)

Python version: taukh_mod.py, 23 lines, on the right (switch to Python above the code).

Variables on this page (7)

fact6, fes1, fes2, fes3, fgsfj, fgsfk, json

Purpose

TAUKH_MOD holds factors at each interface of the rotating model that SETUPV computes once per step from the structure and VCIRC uses to compute the circulation velocities (the name, from "Kelvin–Helmholtz," is older than its content). Shared by 2 routines. It replaces COMMON/TAUKH/ (MHP via Claude, 10/14/26); JSON comes from DIMENSIONS_MOD.

What its variables hold, who sets them, who reads them. All are set by SETUPV at each interface (all but FACT6 to 0 first, at every shell); SETUPV's page gives the equations.

FACT6(JSON): the term of the Eddington–Sweet velocity in the derivative of $\Omega^2 r^2$ (VCIRC: VES $= |\mathtt{FACT1}\,(\mathtt{FACT2}\,\mathtt{RAT}\,\Omega^2 + \mathtt{FACT6}\,\mathrm{d}V)|$).
FES1, FES2, FES3 (JSON each): the Zahn-type terms of the circulation; read by SETUPV itself and by VCIRC.
FGSFK(JSON): the factor of the Goldreich–Schubert–Fricke velocity that VCIRC uses; FGSFJ(JSON): the factor of an earlier form, used only in VCIRC's commented-out lines.

Design

A blanket USE TAUKH_MOD in each routine.

Definitions

moduleTAUKH_MOD

lines 19–35 · GitHub

Uses modules DIMENSIONS_MOD

Used by (2 units)

SETUPV, VCIRC

Change log

The changes since rp_1

Changed since rp_1. New file: COMMON/TAUKH/ as a module.

1C 2C 3C$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ 4C TAUKH_MOD 5C$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ 6C 10/14/26 MHP via Claude 7C code changed to convert COMMON/TAUKH/ into this module. 8C 9C Imported with a blanket USE, the convention for the conversion. 10C All 2 files declared this block identically, so the USE 11C imports exactly the names the declaration already made global in 12C each scoping unit and cannot change meaning. 13C 14C The types restate what the implicit rules supplied: L is 15C LOGICAL*4, I/J/K/M/N are INTEGER*4, everything else REAL*8. 16C SAVE is explicit rather than relying on module variables being 17C implicitly saved, which holds only from Fortran 2008 while ifort 18C Classic predates it. That matches COMMON's semantics. 19 MODULE TAUKH_MOD 20C 10/20/26 MHP via Claude 21C code changed to take JSON from DIMENSIONS_MOD instead of declaring 22C a PRIVATE copy here. 23 USE DIMENSIONS_MOD 24 25 IMPLICIT NONE 26 SAVE 27 28 REAL*8 :: FACT6(JSON) 29 REAL*8 :: FES1(JSON) 30 REAL*8 :: FES2(JSON) 31 REAL*8 :: FGSFJ(JSON) 32 REAL*8 :: FGSFK(JSON) 33 REAL*8 :: FES3(JSON) 34 35 END MODULE TAUKH_MOD

1"""Python version of taukh_mod.f (YREC 7be4133): factors of the circulation 2velocities at each interface, formerly COMMON/TAUKH/. 3 4Translates: taukh_mod.f#TAUKH_MOD (7be4133) 5 6Module-level names, as in the Fortran module, in lower case. Routines that 7USE TAUKH_MOD import this module and write ``taukh_mod.<name>``. 8Set by setupv, read by vcirc. Index 0 unused. 9""" 10 11import numpy as np 12 13from pyrec import dimensions_mod 14 15_JSON = dimensions_mod.json 16 17# Fortran lines 28–33. 18fact6 = np.zeros(_JSON + 1) # Eddington-Sweet term in d(Omega^2 r^2) 19fes1 = np.zeros(_JSON + 1) # Zahn-type terms 20fes2 = np.zeros(_JSON + 1) 21fgsfj = np.zeros(_JSON + 1) # GSF factor of an earlier form (read nowhere) 22fgsfk = np.zeros(_JSON + 1) # GSF factor used by vcirc 23fes3 = np.zeros(_JSON + 1)