| 1 | !#########################################################################
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| 2 | !
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| 3 | ! Copyright (C) 2003-2012 Department of Physics and Astronomy,
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| 4 | ! University of Rochester,
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| 5 | ! Rochester, NY
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| 6 | !
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| 7 | ! problem.f90 of module Bondi is part of AstroBEAR.
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| 8 | !
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| 9 | ! AstroBEAR is free software: you can redistribute it and/or modify
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| 10 | ! it under the terms of the GNU General Public License as published by
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| 11 | ! the Free Software Foundation, either version 3 of the License, or
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| 12 | ! (at your option) any later version.
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| 13 | !
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| 14 | ! AstroBEAR is distributed in the hope that it will be useful,
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| 15 | ! but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 16 | ! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 17 | ! GNU General Public License for more details.
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| 18 | !
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| 19 | ! You should have received a copy of the GNU General Public License
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| 20 | ! along with AstroBEAR. If not, see <http://www.gnu.org/licenses/>.
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| 21 | !
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| 22 | !#########################################################################
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| 23 | !Bondi Module
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| 24 |
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| 25 | MODULE Problem
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| 26 |
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| 27 | USE DataDeclarations
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| 28 | USE GlobalDeclarations
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| 29 | USE PhysicsDeclarations
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| 30 | USE ParticleDeclarations
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| 31 | USE CommonFunctions
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| 32 | USE Bondi
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| 33 | IMPLICIT NONE
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| 34 | PRIVATE
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| 35 |
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| 36 | PUBLIC ProblemModuleInit, ProblemGridInit, &
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| 37 | ProblemBeforeStep, ProblemAfterStep, ProblemSetErrFlag, ProblemBeforeGlobalStep
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| 38 | TYPE(PointGravityDef), POINTER :: PointGravityObj
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| 39 | REAL(KIND=qprec) :: namb, tamb, ibs, obs, mcent, r_bh, ramb, mdot_bondi, camb, r_sonic!, mdot_ruffert
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| 40 | CONTAINS
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| 41 |
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| 42 | SUBROUTINE ProblemModuleInit
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| 43 | INTEGER :: iErr
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| 44 | TYPE(ParticleDef), POINTER :: Particle
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| 45 | NAMELIST /ProblemData/ namb, tamb, ibs, obs, mcent
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| 46 |
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| 47 |
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| 48 | OPEN(UNIT=PROBLEM_DATA_HANDLE, FILE='problem.data')
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| 49 | READ(PROBLEM_DATA_HANDLE,NML=ProblemData)
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| 50 | CLOSE(PROBLEM_DATA_HANDLE, IOSTAT=iErr)
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| 51 |
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| 52 | IF (.not. lRestart) THEN
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| 53 | NULLIFY(Particle)
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| 54 | CALL CreateParticle(Particle)
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| 55 | Particle%q(1)=mcent*MSolar/rScale/lScale**3
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| 56 | Particle%xloc=0
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| 57 | Particle%iAccrete=2 !0=no accretion, 1=fed, 2=!KRUMHOLZ_ACCRETION
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| 58 | Particle%lFixed=.true.
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| 59 | particle%buffer(0:MaxLevel)=ceiling(ibs/levels(0:MaxLevel)%dx)
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| 60 | CALL AddSinkParticle(Particle)
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| 61 | CALL CreatePointGravityObject(Particle%PointGravityObj)
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| 62 | Particle%PointGravityObj%soft_length=1d0*levels(MaxLevel)%dx
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| 63 | Particle%PointGravityObj%soft_function=SPLINESOFT
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| 64 | Particle%PointGravityObj%Mass=mcent*MSolar/rScale/lScale**3 !Central object mass in computational units
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| 65 |
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| 66 | END IF
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| 67 |
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| 68 | !Calculate Bondi radius of initial particle mass
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| 69 | r_BH=ScaleGrav*Particle%q(1)/(gamma*tamb/TempScale)
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| 70 | IF (MPI_ID == 0) THEN
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| 71 | write(*,*) 'Bondi radius (CU)= ', r_BH
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| 72 | END IF
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| 73 |
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| 74 | r_BH=(G*mcent*MSolar*xmu*amu)/(gamma*Boltzmann*tamb)
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| 75 | r_BH=r_BH/lscale !scaled into CU
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| 76 | ! IF (MPI_ID == 0) THEN
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| 77 | ! write(*,*) 'Bondi radius (CU)= ', r_BH
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| 78 | ! END IF
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| 79 |
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| 80 | !Calculate theoretical accretion rate
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| 81 | ramb = (namb*amu*xmu)/rscale
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| 82 | camb=sqrt(gamma*tamb/tempscale)
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| 83 | mdot_bondi=(4*pi*bondi_lambda*ramb*(ScaleGrav*Particle%q(1))**2) / (camb**3)
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| 84 | !mdot_ruffert = (4*pi*ramb*r_bh**2)*(bondi_lambda**2*)
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| 85 | r_sonic = ((5.0-3.0*gamma)/4.0)*((ScaleGrav*particle%q(1))/camb**2)
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| 86 | IF (MPI_ID == 0) THEN
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| 87 | PRINT *, 'cs_inf=', camb
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| 88 | PRINT *, 'sonic radius=', r_sonic
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| 89 | PRINT *, 'T_inf=', Tamb/TempScale
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| 90 | PRINT *, "rho_inf=", ramb
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| 91 | PRINT *, "mdot_bondi (CU) = ", mdot_bondi
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| 92 | PRINT *, 'M_star=', particle%q(1)
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| 93 | END IF
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| 94 |
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| 95 | END SUBROUTINE ProblemModuleInit
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| 96 |
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| 97 | !> Initial Conditions
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| 98 | !! @param Info Info object
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| 99 | SUBROUTINE ProblemGridInit(Info)
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| 100 | !! @brief Initializes the grid data according to the requirements of the problem.
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| 101 | !! @param Info A grid structure.
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| 102 | TYPE (InfoDef) :: Info
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| 103 | INTEGER :: i,j,k
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| 104 | INTEGER :: rmbc,zrmbc,level
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| 105 | INTEGER :: mx, my, mz
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| 106 | INTEGER :: iErr
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| 107 | REAL (KIND=qPrec), POINTER, DIMENSION (:,:,:,:) :: q
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| 108 | REAL(KIND=xprec) :: x,y,z,xl,yl,zl,dx,dy,dz,r
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| 109 | REAL(KIND=qPREC) :: x_, y_, z_, rho, v, temp
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| 110 | level=Info%level
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| 111 | q=>Info%q
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| 112 | ! Calculating the number of ghost cells on each side of the grid.
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| 113 | rmbc=levels(level)%gmbc(levels(level)%step)
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| 114 | dx=levels(level)%dX
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| 115 | dy=dx
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| 116 | SELECT CASE(nDim)
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| 117 | CASE(2)
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| 118 | zrmbc=0
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| 119 | dz=0d0
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| 120 | CASE(3)
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| 121 | zrmbc=rmbc
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| 122 | dz=dx
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| 123 | END SELECT
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| 124 | mx = Info%mX(1)
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| 125 | my = Info%mX(2)
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| 126 | mz = Info%mX(3)
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| 127 | xl=Info%xBounds(1,1)
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| 128 | yl=Info%xBounds(2,1)
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| 129 | zl=Info%xBounds(3,1)
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| 130 |
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| 131 | !All of the values below are in computational units
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| 132 | !print *, 'levels(0)%dx=', levels(0)%dx
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| 133 |
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| 134 |
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| 135 | !the was the following is calculated, need the original to be at 0,0,0:
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| 136 | DO i=1-rmbc, mx+rmbc
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| 137 | x = (xl+(REAL(i,xPrec)-half)*dx)
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| 138 | DO j=1-rmbc, my+rmbc
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| 139 | y = (yl+(REAL(j,xPrec)-half)*dy)
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| 140 | DO k=1-zrmbc, mz+zrmbc
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| 141 | z = (zl+(REAL(k,xPrec)-half)*dz)
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| 142 | r = sqrt(x**2 + y**2+z**2)
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| 143 | !IF (mpi_id==0) THEN
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| 144 | ! print *, 'level=', level
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| 145 | !END IF
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| 146 | ! Calculate non-dimensional radius(x_), density(z_), and velocity(y_)
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| 147 | x_=max(r, ibs-5d0*levels(0)%dx)/r_BH
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| 148 | !print *, 'r=', r
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| 149 | !print *, 'r/r_BH=', r/r_BH
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| 150 | !print *, 'x_=', x_
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| 151 | z_=BH_alpha(x_)
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| 152 | !print *, 'z_=', z_
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| 153 | y_=Bondi_lambda/(z_*x_**(myDim-1))
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| 154 | !print *, 'y_=', y_
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| 155 |
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| 156 | ! Then calculate physical values
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| 157 | rho=z_*namb/nScale
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| 158 | v=-y_*sqrt(gamma*tamb/TempScale)
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| 159 | temp=tamb*(z_**(gamma1))/TempScale
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| 160 |
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| 161 | q(i,j,k,1)=rho
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| 162 | q(i,j,k,ivx)=rho*v*x/r
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| 163 | q(i,j,k,ivy)=rho*v*y/r
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| 164 | !erica added the following for the z component:
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| 165 | q(i,j,k,ivz)=rho*v*z/r
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| 166 | q(i,j,k,iE)=half*rho*v**2+gamma7*rho*temp
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| 167 |
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| 168 | END DO
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| 169 | END DO
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| 170 | END DO
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| 171 | END SUBROUTINE ProblemGridInit
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| 172 |
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| 173 | !! @param Info Info object
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| 174 | SUBROUTINE ProblemBeforeStep(Info)
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| 175 | !! @brief Performs any tasks required before the advance step.
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| 176 | !! @param Info A grid structure.
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| 177 | TYPE (InfoDef) :: Info
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| 178 | INTEGER :: i,j,k
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| 179 | INTEGER :: rmbc,zrmbc,level
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| 180 | INTEGER :: mx, my, mz
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| 181 | REAL (KIND=qPrec), POINTER, DIMENSION (:,:,:,:) :: q
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| 182 | REAL(KIND=xprec) :: x,y,z,xl,yl,zl,dx,dy,dz,r
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| 183 | REAL(KIND=qPREC) :: x_, y_, z_, rho, v, temp
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| 184 |
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| 185 | level=Info%level
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| 186 | q=>Info%q
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| 187 | ! Calculating the number of ghost cells on each side of the grid.
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| 188 | rmbc=levels(level)%gmbc(levels(level)%step)
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| 189 | dx=levels(level)%dX
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| 190 | dy=dx
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| 191 | SELECT CASE(nDim)
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| 192 | CASE(2)
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| 193 | zrmbc=0
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| 194 | dz=0d0
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| 195 | CASE(3)
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| 196 | zrmbc=rmbc
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| 197 | dz=dx
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| 198 | END SELECT
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| 199 | mx = Info%mX(1)
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| 200 | my = Info%mX(2)
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| 201 | mz = Info%mX(3)
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| 202 | xl=Info%xBounds(1,1)
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| 203 | yl=Info%xBounds(2,1)
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| 204 | zl=Info%xBounds(3,1)
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| 205 |
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| 206 | !All of the values below are in computational units
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| 207 |
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| 208 | DO i = 1-rmbc, mx+rmbc
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| 209 | x = (xl+(REAL(i,xPrec)-half)*dx)
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| 210 | DO j = 1-rmbc, my+rmbc
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| 211 | y = (yl+(REAL(j,xPrec)-half)*dy)
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| 212 | DO k = 1-zrmbc,mz+zrmbc
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| 213 | z = (zl+(REAL(k,xPrec)-half)*dz)
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| 214 |
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| 215 | r = sqrt(x**2 + y**2 +z**2)
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| 216 | ! r = sqrt(x**2 + y**2) -- this was original line, changed to the previous
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| 217 |
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| 218 | IF (r < ibs .OR. r > obs) THEN !Set cells to analytic solution
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| 219 |
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| 220 | x_=max(ibs-5d0*levels(0)%dx, r)/r_BH !Adjust values deep inside inner region to avoid extremely high velocities etc...
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| 221 | z_=BH_alpha(x_)
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| 222 | y_=Bondi_lambda/(z_*x_**(myDim-1))
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| 223 | rho=z_*namb/nScale
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| 224 | v=-y_*sqrt(gamma*tamb/TempScale)
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| 225 | temp=tamb*(z_**(gamma1))/TempScale
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| 226 |
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| 227 | q(i,j,k,1)=rho
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| 228 | q(i,j,k,ivx)=rho*v*x/r
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| 229 | q(i,j,k,ivy)=rho*v*y/r
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| 230 | !erica added z component:
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| 231 | q(i,j,k,ivz)=rho*v*z/r
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| 232 | q(i,j,k,iE)=half*rho*v**2+gamma7*rho*temp
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| 233 |
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| 234 | END IF
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| 235 |
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| 236 |
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| 237 |
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| 238 | END DO
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| 239 | END DO
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| 240 | END DO
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| 241 |
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| 242 | END SUBROUTINE ProblemBeforeStep
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| 243 |
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| 244 | !> Does nothing
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| 245 | !! @param Info Info object
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| 246 | SUBROUTINE ProblemAfterStep(Info)
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| 247 | !! @brief Performs any post-step corrections that are required.
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| 248 | !! @param Info A grid structure.
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| 249 | TYPE (InfoDef) :: Info
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| 250 | CALL ProblemBeforeStep(Info)
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| 251 | END SUBROUTINE ProblemAfterStep
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| 252 |
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| 253 | !> Does nothing
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| 254 | !! @param Info Info object
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| 255 | SUBROUTINE ProblemSetErrFlag(Info)
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| 256 | !! @brief Sets error flags according to problem-specific conditions..
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| 257 | !! @param Info A grid structure.
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| 258 | TYPE (InfoDef) :: Info
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| 259 | END SUBROUTINE ProblemSetErrFlag
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| 260 |
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| 261 | SUBROUTINE ProblemBeforeGlobalStep(n)
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| 262 | INTEGER :: n
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| 263 | END SUBROUTINE ProblemBeforeGlobalStep
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| 264 |
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| 265 | END MODULE Problem
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| 266 |
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| 267 |
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