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rans_komg_2P.usr
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real function rans_komg_mut(ix,iy,iz,iel,iph)
include 'SIZE'
include 'TSTEP'
include 'RANS_KOMG'
real timel
save timel
data timel /-1.0/
if(time.ne.timel) then
do jph=1,nph
if(ifrans_komg) call rans_komg_compute(jph)
if(ifrans_komgSST) call rans_komgSST_compute(jph)
enddo
timel = time
endif
rans_komg_mut = mut(ix,iy,iz,iel,iph)
return
end
c-----------------------------------------------------------------------
real function rans_komg_mutsk(ix,iy,iz,iel,iph)
include 'SIZE'
include 'TSTEP'
include 'RANS_KOMG'
rans_komg_mutsk = mutsk(ix,iy,iz,iel,iph)
return
end
c-----------------------------------------------------------------------
real function rans_komg_mutso(ix,iy,iz,iel,iph)
include 'SIZE'
include 'TSTEP'
include 'RANS_KOMG'
rans_komg_mutso = mutso(ix,iy,iz,iel,iph)
return
end
c-----------------------------------------------------------------------
subroutine rans_komg_getCoeffs(coeffs_in)
include 'SIZE'
include 'TSTEP'
include 'RANS_KOMG'
real coeffs_in(1)
c if(ncoeffs_in.lt.ncoeffs)
c $ call exitti('dim of user provided komg coeffs array
c $ should be >=$',ncoeffs)
do i=1,ncoeffs
coeffs_in(i) = coeffs(i)
enddo
return
end
c-----------------------------------------------------------------------
real function rans_komg_kSrc(ix,iy,iz,iel,iph)
include 'SIZE'
include 'TSTEP'
include 'RANS_KOMG'
rans_komg_kSrc = kSrc(ix,iy,iz,iel,iph)
return
end
c-----------------------------------------------------------------------
real function rans_komg_omgSrc(ix,iy,iz,iel,iph)
include 'SIZE'
include 'TSTEP'
include 'RANS_KOMG'
rans_komg_omgSrc = omgSrc(ix,iy,iz,iel,iph)
return
end
c-----------------------------------------------------------------------
subroutine rans_komg_compute(iph)
c
c Compute RANS source terms and diffusivities on an
c element-by-element basis
c
include 'SIZE'
include 'TOTAL'
include 'RANS_KOMG'
parameter (lxyz=lx1*ly1*lz1)
common /scrns/ u_x(lxyz),u_y(lxyz),u_z(lxyz)
$ , v_x(lxyz),v_y(lxyz),v_z(lxyz)
$ , w_x(lxyz),w_y(lxyz),w_z(lxyz)
$ , k_x(lxyz),k_y(lxyz),k_z(lxyz)
$ , o_x(lxyz),o_y(lxyz),o_z(lxyz)
real k_x,k_y,k_z
real tempv(lxyz), rhoalpk (lxyz)
$ ,omwom(lxyz), rhoalpfr(lxyz)
$ ,omp_x(lxyz), omp_y(lxyz), omp_z(lxyz)
real term1(lxyz), term2 (lxyz)
$ ,term3(lxyz), term4 (lxyz)
$ ,term5(lxyz)
common /scruz/ g(lxyz)
real kv_min,omeg_max
integer e
real omg(3,3),s(3,3)
real k,mu_t,nu_t,nu
real mu_omeg(lxyz), mu_omegx(lxyz), mu_omegy(lxyz), mu_omegz(lxyz)
real extra_src_omega(lxyz)
c Turbulent viscosity constants
Pr_t = coeffs( 1)
sigma_k = coeffs( 2)
sigma_omega = coeffs( 3)
c Low Reynolds number correction constants
alpinf_str = coeffs( 4)
r_k = coeffs( 5)
beta_0 = coeffs( 6)
alp0_str = coeffs( 7)
c Dissipation of K constants
betainf_str = coeffs( 8)
alp_inf = coeffs( 9)
r_b = coeffs(10)
akk = coeffs(11)
c Production of omega constants
alpha_0 = coeffs(12)
r_w = coeffs(13)
c Dissipation of omega constants
c beta_0 = defined earlier
kv_min = coeffs(14)
omeg_max = coeffs(15)
tiny = coeffs(16)
c================================
nome_neg = 0
nkey_neg = 0
xome_neg = 0.0
xkey_neg = 0.0
nu=mu(iph)/rho(iph)
do e=1,nelv
c Evaluate G from eq. 4.2.15 cms.gre.ac.uk used in
c http://staffweb.cms.gre.ac.uk/~ct02/research/thesis/node54.html
c computation of G_k term later
if(if3d)then
call gradm11(u_x,u_y,u_z,vkx(1,1,1,1,iph),e)
call gradm11(v_x,v_y,v_z,vky(1,1,1,1,iph),e)
call gradm11(w_x,w_y,w_z,vkz(1,1,1,1,iph),e)
do i=1,lxyz
g(i) = 2*(u_x(i)**2 + v_y(i)**2 + w_z(i)**2)
$ + (u_y(i) + v_x(i))**2
$ + (u_z(i) + w_x(i))**2
$ + (w_y(i) + v_z(i))**2
enddo
else
call gradm11(u_x,u_y,u_z,vkx(1,1,1,1,iph),e)
call gradm11(v_x,v_y,v_z,vky(1,1,1,1,iph),e)
do i=1,lxyz
g(i) = 2*(u_x(i)**2 + v_y(i)**2)
$ + (u_y(i) + v_x(i))**2
enddo
endif
call gradm11(k_x, k_y, k_z, t(1,1,1,1,ifld_k(iph)-1),e)
call gradm11(omp_x,omp_y,omp_z,t(1,1,1,1,ifld_o(iph)-1),e)
c solve for omega_pert
c ---------------------
c call check_omwall_behavior
c ---------------------
do i=1,lxyz
c limits for k, omega
c solve for omega_pert
omega = t(i,1,1,e,ifld_o(iph)-1) + f_omegb(i,1,1,e,iph) ! Current k & omega values
k = t(i,1,1,e,ifld_k(iph)-1) ! from previous timestep
iflim_omeg = 1 ! limit omega^{prime} 1 limit omega_total
if (iflim_omeg.eq.0) then
if(t(i,1,1,e,ifld_o(iph)-1).lt.0.0) then
c write(*,*) 'Zero OMEG ', t(i,1,1,e,ifld_o-1)
xome_neg = min(xome_neg,t(i,1,1,e,ifld_o(iph)-1))
nome_neg = nome_neg + 1
c write(*,*) 'Neg OMEG ', nome_neg, xome_neg
t(i,1,1,e,ifld_o(iph)-1) =
& 0.01*abs(t(i,1,1,e,ifld_o(iph)-1))
omega = t(i,1,1,e,ifld_o(iph)-1) + f_omegb(i,1,1,e,iph) ! Current k & omega values
endif
if(t(i,1,1,e,ifld_k(iph)-1).lt.0.0) then
c write(*,*) 'Zero K ', t(i,1,1,e,ifld_k-1)
xkey_neg = min(xkey_neg,t(i,1,1,e,ifld_k(iph)-1))
nkey_neg = nkey_neg + 1
c write(*,*) 'Neg KEY ', nkey_neg, xkey_neg
t(i,1,1,e,ifld_k(iph)-1) =
& 0.01*abs(t(i,1,1,e,ifld_k(iph)-1))
k = t(i,1,1,e,ifld_k(iph)-1) ! from previous timestep
endif
elseif(iflim_omeg.eq.1) then
if(omega.lt.0.0) then
xome_neg=min(xome_neg,omega)
nome_neg=nome_neg+1
omega = 0.01*abs(omega)
endif
if(k.lt.0.0) then
xkey_neg=min(xkey_neg,k)
nkey_neg=nkey_neg+1
k = 0.01*abs(k)
endif
endif
expn = -2.0
o_x(i)=
& omp_x(i)+expn*dfdx_omegb(i,1,1,e,iph)*f_omegb(i,1,1,e,iph)
o_y(i)=
& omp_y(i)+expn*dfdy_omegb(i,1,1,e,iph)*f_omegb(i,1,1,e,iph)
if(if3d)
$ o_z(i)=
& omp_z(i)+expn*dfdz_omegb(i,1,1,e,iph)*f_omegb(i,1,1,e,iph)
omwom (i)= 1.0/(1.0+t(i,1,1,e,ifld_o(iph)-1)
& /f_omegb(i,1,1,e,iph))
c See equations from eqns_k_omega1.pdf from Eq. (3) onwards
c Eq.(1) and (2) in eqns_k_omega1.pdf are the governing equations
c no source terms Sk or S_w are added
omg(1,1) = 0.0
omg(1,2) = 0.5*(u_y(i) - v_x(i))
if(if3d)then
omg(1,3) = 0.5*(u_z(i) - w_x(i))
else
omg(1,3) = 0
endif
omg(2,1) = -omg(1,2)
omg(2,2) = 0.0
if(if3d)then
omg(2,3) = 0.5*(v_z(i) - w_y(i))
else
omg(2,3) = 0.0
endif
omg(3,1) = -omg(1,3)
omg(3,2) = -omg(2,3)
omg(3,3) = 0.0
c ----------
s(1,1) = u_x (i)
s(1,2) = 0.5*(v_x(i) + u_y(i))
if(if3d)then
s(1,3) = 0.5*(w_x(i) + u_z(i))
else
s(1,3) = 0.0
endif
s(2,1) = 0.5*(u_y(i) + v_x(i))
s(2,2) = v_y(i)
if(if3d)then
s(2,3) = 0.5*(w_y(i) + v_z(i))
else
s(2,3) = 0.0
endif
if(if3d)then
s(3,1) = 0.5*(u_z(i) + w_x(i))
s(3,2) = 0.5*(v_z(i) + w_y(i))
s(3,3) = w_z(i)
else
s(3,1) = 0
s(3,2) = 0
s(3,3) = 0
endif
sum_xx = 0
do kk = 1,3
do jj = 1,3
do ii = 1,3
sum_xx = sum_xx + omg(ii,jj)*omg(jj,kk)*s(kk,ii)
enddo
enddo
enddo
! calculate del k * del omega / omega
if(if3d)then
xk3 = (k_x(i)*o_x(i) + k_y(i)*o_y(i) + k_z(i)*o_z(i))
$ / (omega**3+tiny)
else
xk3 = (k_x(i)*o_x(i) + k_y(i)*o_y(i))
$ / (omega**3+tiny)
endif
re_t = rho(iph) * k /(mu(iph) * omega + tiny)
alp_str = alpinf_str * (alp0_str + (re_t/r_k))
$ / (1+(re_t/r_k))
mu_t = rho(iph) * alp_str*k/(omega + tiny) ! should multiply these by rho!!!
rhoalpk(i)= rho(iph)*alp_str*k
rtld = re_t / r_k
funcr = (1.0 - alp0_str) / (alp0_str + rtld)/(1.0 + rtld)
factr = (1.0 + rtld * funcr)
sigma_omega1 = 1.0/sigma_omega
rhoalpfr(i) = expn * rho(iph) * alp_str * factr * omwom(i)
$ * sigma_omega1
c nu_t is kinematic turbulent viscosity
c units of k = m2/s2, units of omega = 1/s, nu units = m2/s
c set limit for nu_t
c nu_t = max(tiny,nu_t)
c if(nu_t.gt.5000*mu)nu_t = 5000*mu
betai_str = betainf_str * (akk + (re_t/r_b)**4)
$ / (1.0 + (re_t/r_b)**4)
if (xk3.le.0)then
f_beta_str = 1.0
else
f_beta_str = (1.0 + 680.0*xk3*xk3)/(1.0 + 400.0*xk3*xk3)
endif
Y_k = rho(iph) * betai_str * f_beta_str * k * omega
c betai_str = beta_star in 12.5.15 for incompressible flow
G_k = mu_t*g(i)
c g(i) is S**2 in equation sheet
kSrc(i,1,1,e,iph) = G_k - Y_k
c Compute production of omega
alpha = (alp_inf/alp_str) *
$ ((alpha_0 + (re_t/r_w))/(1.0 + (re_t/r_w)))
G_w = alpha*alp_str*rho(iph)*g(i)
c Compute dissipation of omega
beta = beta_0
c no compressibility correction M < 0.25
x_w = abs((sum_xx)/(betainf_str*omega + tiny)**3)
f_b = 1.0
if(if3d) f_b = (1.0 + 70.0*x_w)/(1.0 + 80.0*x_w)
Y_w = rho(iph)*beta*f_b * omega * omega
omgSrc(i,1,1,e,iph) = G_w - Y_w
mut (i,1,1,e,iph) = mu_t
mutsk (i,1,1,e,iph) = mu_t / sigma_k
mutso (i,1,1,e,iph) = mu_t / sigma_omega
enddo
c solve for omega_pert
c add mut*delsqf
sigma_omega1 = 1.0/sigma_omega
call copy (mu_omeg,rhoalpk,lxyz)
call cmult (mu_omeg,sigma_omega1,lxyz)
call col4 (extra_src_omega,mu_omeg ,omwom
$ ,delsqf_omegb(1,1,1,e,iph),lxyz)
c add mu*delsqf
call copy (tempv,delsqf_omegb(1,1,1,e,iph),lxyz)
call cmult (tempv,mu(iph),lxyz)
call col2 (tempv,f_omegb(1,1,1,e,iph),lxyz)
call add2 (extra_src_omega, tempv,lxyz)
c Form (1/sigma_w) del_mut * del_omw
c form 1: (del_yw/yw) del_k
call col3 (term1,dfdx_omegb(1,1,1,e,iph),k_x,lxyz)
call addcol3(term1,dfdy_omegb(1,1,1,e,iph),k_y,lxyz)
if(if3d)
$ call addcol3(term1,dfdz_omegb(1,1,1,e,iph),k_z,lxyz)
c form 2: 2(omw/om) (del_omw/yw)^2
expm = -expn
call col3 (term2,omwom,delfsq_omegb(1,1,1,e,iph), lxyz)
call col2 (term2 ,t(1,1,1,e,ifld_k(iph)-1),lxyz)
call cmult (term2,expm,lxyz)
call add3 (tempv, term1, term2, lxyz)
c form 3: -(omw/om) k (del_yw/yw) \del_omp/omw
call col3 (term3,omwom,t(1,1,1,e,ifld_k(iph)-1),lxyz)
call invcol2(term3 ,f_omegb(1,1,1,e,iph) ,lxyz)
call col3 (term4, dfdx_omegb(1,1,1,e,iph),omp_x, lxyz)
call addcol3(term4, dfdy_omegb(1,1,1,e,iph),omp_y, lxyz)
if(if3d)
$ call addcol3(term4, dfdz_omegb(1,1,1,e,iph),omp_z, lxyz)
call subcol3(tempv, term3, term4, lxyz)
call addcol3(extra_src_omega, rhoalpfr, tempv, lxyz)
c need to multiply VX, VY, VZ by variable rho (vtrans) for compressible
call
& col3 (tempv,dfdx_omegb(1,1,1,e,iph),vkx(1,1,1,e,iph), lxyz)
call
& addcol3(tempv,dfdy_omegb(1,1,1,e,iph),vky(1,1,1,e,iph), lxyz)
if(if3d) call
& addcol3(tempv,dfdz_omegb(1,1,1,e,iph),vkz(1,1,1,e,iph), lxyz)
call
& admcol3(extra_src_omega,tempv,f_omegb(1,1,1,e,iph),expm,lxyz)
call add2 (omgSrc(1,1,1,e,iph),extra_src_omega, lxyz)
enddo
nome_neg =iglsum(nome_neg,1)
nkey_neg =iglsum(nkey_neg,1)
xome_neg = glmin(xome_neg,1)
xkey_neg = glmin(xkey_neg,1)
c write(*,*) 'Neg Omega ', nome_neg, xome_neg
c write(*,*) 'Neg Key ', nkey_neg, xkey_neg
if(nid.eq.0) then
if(nome_neg.gt.0) write(*,*) 'Neg Omega ', nome_neg, xome_neg
if(nkey_neg.gt.0) write(*,*) 'Neg Key ', nkey_neg, xkey_neg
endif
return
end
c-----------------------------------------------------------------------
subroutine rans_komgSST_compute
c
c Compute RANS source terms and diffusivities on an
c element-by-element basis
c
include 'SIZE'
include 'TOTAL'
include 'RANS_KOMG'
parameter (lxyz=lx1*ly1*lz1)
common /scrns/ u_x(lxyz),u_y(lxyz),u_z(lxyz)
$ , v_x(lxyz),v_y(lxyz),v_z(lxyz)
$ , w_x(lxyz),w_y(lxyz),w_z(lxyz)
$ , k_x(lxyz),k_y(lxyz),k_z(lxyz)
$ , o_x(lxyz),o_y(lxyz),o_z(lxyz)
real k_x,k_y,k_z
real tempv(lxyz), rhoalpk (lxyz)
$ ,omwom(lxyz), rhoalpfr(lxyz)
$ ,omp_x(lxyz), omp_y(lxyz), omp_z(lxyz)
real term1(lxyz), term2 (lxyz)
$ ,term3(lxyz), term4 (lxyz)
$ ,term5(lxyz)
common /scruz/ g(lxyz)
real kv_min,omeg_max
integer e
real omg(3,3),s(3,3)
real k,mu_t,nu_t,nu
real mu_omeg(lxyz), mu_omegx(lxyz), mu_omegy(lxyz), mu_omegz(lxyz)
real extra_src_omega(lxyz)
c====turbulence constants==========
c Turbulent viscosity constants
Pr_t = coeffs( 1)
sigk1 = coeffs( 2)
sigom1 = coeffs( 3)
c Low Reynolds number correction constants
alpinf_str = coeffs( 4)
r_k = coeffs( 5)
beta1 = coeffs( 6)
alp0_str = coeffs( 7)
c Dissipation of K constants
beta_str = coeffs( 8)
alp_inf = coeffs( 9)
r_b = coeffs(10)
akk = coeffs(11)
c Production of omega constants
alpha_0 = coeffs(12)
r_w = coeffs(13)
c Dissipation of omega constants
c beta_0 = defined earlier
kv_min = coeffs(14)
omeg_max = coeffs(15)
tiny = coeffs(16)
c additional SST and k and epsilon constants
alp1 = coeffs(17)
beta2 = coeffs(18)
sigk2 = coeffs(19)
sigom2 = coeffs(20)
gamma2 = coeffs(21)
c================================
nome_neg = 0
nkey_neg = 0
xome_neg = 0.0
xkey_neg = 0.0
do e=1,nelv
c Evaluate G from eq. 4.2.15 cms.gre.ac.uk used in
c http://staffweb.cms.gre.ac.uk/~ct02/research/thesis/node54.html
c computation of G_k term later
if(if3d)then
call gradm11(u_x,u_y,u_z,vkx(1,1,1,1,iph),e)
call gradm11(v_x,v_y,v_z,vky(1,1,1,1,iph),e)
call gradm11(w_x,w_y,w_z,vkz(1,1,1,1,iph),e)
do i=1,lxyz
g(i) = 2*(u_x(i)**2 + v_y(i)**2 + w_z(i)**2)
$ + (u_y(i) + v_x(i))**2
$ + (u_z(i) + w_x(i))**2
$ + (w_y(i) + v_z(i))**2
enddo
else
call gradm11(u_x,u_y,u_z,vkx(1,1,1,1,iph),e)
call gradm11(v_x,v_y,v_z,vky(1,1,1,1,iph),e)
do i=1,lxyz
g(i) = 2*(u_x(i)**2 + v_y(i)**2)
$ + (u_y(i) + v_x(i))**2
enddo
endif
call gradm11(k_x, k_y, k_z, t(1,1,1,1,ifld_k(iph)-1),e)
call gradm11(omp_x,omp_y,omp_z,t(1,1,1,1,ifld_o(iph)-1),e)
c solve for omega_pert
c ---------------------
c call check_omwall_behavior
c ---------------------
do i=1,lxyz
c limits for k, omega
c solve for omega_pert
omega = t(i,1,1,e,ifld_o(iph)-1) + f_omegb(i,1,1,e,iph) ! Current k & omega values
k = t(i,1,1,e,ifld_k(iph)-1) ! from previous timestep
iflim_omeg = 0 ! limit omega^{prime} 1 limit omega_total
if (iflim_omeg.eq.0) then
if(t(i,1,1,e,ifld_o(iph)-1).lt.0.0) then
c write(*,*) 'Zero OMEG ', t(i,1,1,e,ifld_o-1)
xome_neg = min(xome_neg,t(i,1,1,e,ifld_o(iph)-1))
nome_neg = nome_neg + 1
c write(*,*) 'Neg OMEG ', nome_neg, xome_neg
t(i,1,1,e,ifld_o(iph)-1) =
& 0.01*abs(t(i,1,1,e,ifld_o(iph)-1))
omega = t(i,1,1,e,ifld_o(iph)-1) + f_omegb(i,1,1,e,iph) ! Current k & omega values
endif
if(t(i,1,1,e,ifld_k(iph)-1).lt.0.0) then
c write(*,*) 'Zero K ', t(i,1,1,e,ifld_k-1)
xkey_neg = min(xkey_neg,t(i,1,1,e,ifld_k(iph)-1))
nkey_neg = nkey_neg + 1
c write(*,*) 'Neg KEY ', nkey_neg, xkey_neg
t(i,1,1,e,ifld_k(iph)-1) =
& 0.01*abs(t(i,1,1,e,ifld_k(iph)-1))
k = t(i,1,1,e,ifld_k(iph)-1) ! from previous timestep
endif
elseif(iflim_omeg.eq.1) then
if(omega.lt.0.0) then
write(*,*) 'OMEG tot is neg', omega
omega = 0.01*abs(omega)
endif
if(k.lt.0.0) then
write(*,*) 'K is neg', k
k = 0.01*abs(k)
endif
endif
expn = -2.0
o_x(i)=
& omp_x(i)+expn*dfdx_omegb(1,1,1,e,iph)*f_omegb(i,1,1,e,iph)
o_y(i)=
& omp_y(i)+expn*dfdy_omegb(1,1,1,e,iph)*f_omegb(i,1,1,e,iph)
if(if3d) o_z(i)=
& omp_z(i)+expn*dfdz_omegb(1,1,1,e,iph)*f_omegb(i,1,1,e,iph)
omwom(i)=1.0/(1.0+t(i,1,1,e,ifld_o(iph)-1)
& /f_omegb(i,1,1,e,iph))
c See equations from eqns_k_omega1.pdf from Eq. (3) onwards
c Eq.(1) and (2) in eqns_k_omega1.pdf are the governing equations
c no source terms Sk or S_w are added
omg(1,1) = 0.0
omg(1,2) = 0.5*(u_y(i) - v_x(i))
if(if3d)then
omg(1,3) = 0.5*(u_z(i) - w_x(i))
else
omg(1,3) = 0
endif
omg(2,1) = -omg(1,2)
omg(2,2) = 0.0
if(if3d)then
omg(2,3) = 0.5*(v_z(i) - w_y(i))
else
omg(2,3) = 0.0
endif
omg(3,1) = -omg(1,3)
omg(3,2) = -omg(2,3)
omg(3,3) = 0.0
c ----------
s(1,1) = u_x (i)
s(1,2) = 0.5*(v_x(i) + u_y(i))
if(if3d)then
s(1,3) = 0.5*(w_x(i) + u_z(i))
else
s(1,3) = 0.0
endif
s(2,1) = 0.5*(u_y(i) + v_x(i))
s(2,2) = v_y(i)
if(if3d)then
s(2,3) = 0.5*(w_y(i) + v_z(i))
else
s(2,3) = 0.0
endif
if(if3d)then
s(3,1) = 0.5*(u_z(i) + w_x(i))
s(3,2) = 0.5*(v_z(i) + w_y(i))
s(3,3) = w_z(i)
else
s(3,1) = 0
s(3,2) = 0
s(3,3) = 0
endif
sum_Om = 0
sum_St = 0
do jj = 1,3
do ii = 1,3
sum_Om = sum_Om + omg(ii,jj)*omg(ii,jj)
sum_St = sum_St + s (ii,jj)*s (ii,jj)
enddo
enddo
St_magn = sqrt(2.0*sum_St)
Om_magn = sqrt(2.0*sum_Om)
sum_xx = 0
do kk = 1,3
do jj = 1,3
do ii = 1,3
sum_xx = sum_xx + omg(ii,jj)*omg(jj,kk)*s(kk,ii)
enddo
enddo
enddo
! calculate del k * del omega / omega
if(if3d)then
xk = (k_x(i)*o_x(i) + k_y(i)*o_y(i) + k_z(i)*o_z(i))
$ / (omega+tiny)
xk3 = (k_x(i)*o_x(i) + k_y(i)*o_y(i) + k_z(i)*o_z(i))
$ / (omega**3+tiny)
else
xk = (k_x(i)*o_x(i) + k_y(i)*o_y(i))
$ / (omega+tiny)
xk3 = (k_x(i)*o_x(i) + k_y(i)*o_y(i))
$ / (omega**3+tiny)
endif
c ------------ begin low Re part of k-omega -------------------
re_t = rho(iph) * k /(mu(iph) * omega + tiny)
alp_str = alpinf_str * (alp0_str + (re_t/r_k))
$ / (1+(re_t/r_k))
rhoalpk(i)= rho(iph)*alp_str*k
rtld = re_t / r_k
funcr = (1.0 - alp0_str) / (alp0_str + rtld)/(1.0 + rtld)
factr = (1.0 + rtld * funcr)
rhoalpfr(i) = expn*rho(iph)*alp_str*factr*omwom(i)*sigom1
c nu_t is kinematic turbulent viscosity
c units of k = m2/s2, units of omega = 1/s, nu units = m2/s
c set limit for nu_t
c nu_t = max(tiny,nu_t)
c if(nu_t.gt.5000*mu)nu_t = 5000*mu
betai_str = beta_str * (akk + (re_t/r_b)**4)
$ / (1.0 + (re_t/r_b)**4)
if (xk3.le.0)then
f_beta_str = 1.0
else
f_beta_str = (1.0 + 680.0*xk3*xk3)/(1 + 400.0*xk3*xk3)
endif
c Compute production of omega
alpha = (alp_inf/alp_str) *
$ ((alpha_0 + (re_t/r_w))/(1 + (re_t/r_w)))
gammai = alpha*alp_str
c Compute dissipation of omega
x_w = abs((sum_xx)/(beta_str*omega + tiny)**3)
f_b = 1.0
if(if3d) f_b = (1.0 + 70.0*x_w)/(1.0 + 80.0*x_w)
betai= beta1 * f_b
c ------------ end low Re part of k-omega -------------------
! calculate F2 based on arg2
yw = ywd (i,1,1,e)
ywm1 = ywdm1(i,1,1,e,iph)
ywm2 = ywm1*ywm1
arg2_1 = sqrt(abs(k)) * ywm1 / omega / beta_str
arg2_2 = 500.0*mu(iph) * ywm2 /(omega*rho(iph))
arg2 = max(2.0*arg2_1, arg2_2)
Fun2 = tanh(arg2 * arg2)
! calculate F1 based on arg1
argCD = 2.0 * rho(iph) * sigom2 * xk
CDkom = max(argCD, 1.0e-10)
arg1_1 = max( arg2_1, arg2_2)
arg1_2 = 4.0 * rho(iph) * sigom2 * k * ywm2 / CDkom
arg1 = min( arg1_1, arg1_2)
Fun1 = tanh(arg1 * arg1 * arg1 * arg1)
! calculate mu_t
argn_1 = alp1*(omega + tiny) / alp_str
argn_2 = Fun2*St_magn ! this can also be St_magn
mu_t = 0.0
denom = max(argn_1, argn_2)
if(yw.ne.0) mu_t = rho(iph) * alp1 * k / denom
! Compute Y_k = dissipation of k
c Y_k = rho * beta_str * k * omega
Y_k = rho(iph) * betai_str * f_beta_str * k * omega
! Compute G_k = production of k and limit it to 10*Y_k (the dissipation of k)
G_k = mu_t*g(i)
G_k = min(G_k, 10.0*Y_k)
! Compute Source term for k
kSrc(i,1,1,e,iph) = G_k - Y_k
c Compute production of omega
beta = Fun1 * betai + (1.0 - Fun1) * beta2
gamma = Fun1 * gammai + (1.0 - Fun1) * gamma2
sigk = Fun1 * sigk1 + (1.0 - Fun1) * sigk2
sigom = Fun1 * sigom1 + (1.0 - Fun1) * sigom2
! Compute production of omega
G_w = rho(iph) * gamma * g(i)
! Compute dissipation of omega
Y_w = rho(iph) * beta * omega * omega
! Compute additional SST term for omega
S_w = (1.0 - Fun1) * argCD
! Compute Source term for omega
omgSrc(i,1,1,e,iph) = G_w - Y_w + S_w
mut (i,1,1,e,iph) = mu_t
mutsk (i,1,1,e,iph) = mu_t * sigk
mutso (i,1,1,e,iph) = mu_t * sigom
enddo
c solve for omega_pert
c add mut*delsqf
call copy (mu_omeg,rhoalpk,lxyz)
call cmult (mu_omeg,sigom1, lxyz)
call col4 (extra_src_omega,mu_omeg ,omwom
$ ,delsqf_omegb(1,1,1,e,iph),lxyz)
c add mu*delsqf
call copy (tempv,delsqf_omegb(1,1,1,e,iph),lxyz)
call cmult (tempv,mu(iph),lxyz)
call col2 (tempv,f_omegb(1,1,1,e,iph),lxyz)
call add2 (extra_src_omega, tempv,lxyz)
c Form (1/sigma_w) del_mut * del_omw
c form 1: (del_yw/yw) del_k
call col3 (term1,dfdx_omegb(1,1,1,e,iph),k_x,lxyz)
call addcol3(term1,dfdy_omegb(1,1,1,e,iph),k_y,lxyz)
if(if3d)
$ call addcol3(term1,dfdz_omegb(1,1,1,e,iph),k_z,lxyz)
c form 2: 2(omw/om) (del_omw/yw)^2
expm = -expn
call col3 (term2,omwom,delfsq_omegb(1,1,1,e,iph), lxyz)
call col2 (term2 ,t(1,1,1,e,ifld_k(iph)-1),lxyz)
call cmult (term2,expm,lxyz)
call add3 (tempv, term1, term2, lxyz)
c form 3: -(omw/om) k (del_yw/yw) \del_omp/omw
call col3 (term3,omwom,t(1,1,1,e,ifld_k(iph)-1), lxyz)
call invcol2(term3, f_omegb(1,1,1,e,iph), lxyz)
call col3 (term4, dfdx_omegb(1,1,1,e,iph),omp_x, lxyz)
call addcol3(term4, dfdy_omegb(1,1,1,e,iph),omp_y, lxyz)
if(if3d)
$ call addcol3(term4, dfdz_omegb(1,1,1,e,iph),omp_z, lxyz)
call subcol3(tempv, term3, term4, lxyz)
call addcol3(extra_src_omega, rhoalpfr, tempv, lxyz)
c need to multiply VX, VY, VZ by variable rho (vtrans) for compressible
call
& col3 (tempv,dfdx_omegb(1,1,1,e,iph),vkx(1,1,1,e,iph), lxyz)
call
& addcol3(tempv,dfdy_omegb(1,1,1,e,iph),vky(1,1,1,e,iph), lxyz)
if(if3d) call
& addcol3(tempv,dfdz_omegb(1,1,1,e,iph),vkz(1,1,1,e,iph), lxyz)
call
& admcol3(extra_src_omega,tempv,f_omegb(1,1,1,e,iph),expm,lxyz)
call add2 (omgSrc(1,1,1,e,iph),extra_src_omega ,lxyz)
enddo
nome_neg =iglsum(nome_neg,1)
nkey_neg =iglsum(nkey_neg,1)
xome_neg = glmin(xome_neg,1)
xkey_neg = glmin(xkey_neg,1)
c write(*,*) 'Neg Omega ', nome_neg, xome_neg
c write(*,*) 'Neg Key ', nkey_neg, xkey_neg
if(nid.eq.0) then
if(nome_neg.gt.0) write(*,*) 'Neg Omega ', nome_neg, xome_neg
if(nkey_neg.gt.0) write(*,*) 'Neg Key ', nkey_neg, xkey_neg
endif
return
end
c-----------------------------------------------------------------------
subroutine rans_komg_init(ifld_k_in,ifld_o_in,rho_in,mu_in
& ,ifcoeffs,coeffs_in,ifwall,wdin,model_id,nph)
c
c Initialize values ifld_o & ifld_k for RANS k-omega turbulence
c modeling
c
include 'SIZE'
include 'TOTAL'
include 'RANS_KOMG'
real coeffs_in(1),wdin(1),rho_in(1),mu_in(1)
integer ntot,ifld_max
integer ifld_k_in(1),ifld_o_in(1)
logical ifcoeffs,ifwall
real w1(lx1*ly1*lz1*lelv)
real w2(lx1*ly1*lz1*lelv)
real w3(lx1*ly1*lz1*lelv)
real w4(lx1*ly1*lz1*lelv)
real w5(lx1*ly1*lz1*lelv)
character*3 bcw
ntot=nx1*ny1*nz1*nelv
ifrans_komg = .FALSE.
ifrans_komgSST = .FALSE.
if(model_id .eq.1) ifrans_komg = .TRUE.
if(model_id .eq.2) ifrans_komgSST = .TRUE.
if(nid.eq.0) then
write(*,*) 'Using model_id ', model_id
write(*,*) 'ifrans_komg ', ifrans_komg
write(*,*) 'ifrans_komgSST ', ifrans_komgSST
endif
ifld_max=0
do(iph=1,nph)
ifld_k(iph)= ifld_k_in(iph)
ifld_o(iph)= ifld_o_in(iph)
ifld_max=max(ifld_max,ifld_o(iph))
ifld_max=max(ifld_max,ifld_k(iph))
rho(iph)=rho_in(iph)
mu(iph)=mu_in(iph)
enddo
if (ifld_max.gt.ldimt1)
$ call exitti('nflds gt ldimt1, recompile with ldimt1 > ',
$ ifld_max)
! specify k-omega model coefficients
c if(ncoeffs_in.lt.ncoeffs)
c $ call exitti('dim of user provided komg coeffs array
c $ should be >=$',ncoeffs)
if(ifcoeffs) then
do i=1,ncoeffs
coeffs(i) =coeffs_in(i)
enddo
else
if(ifrans_komg) call rans_komg_set_defaultcoeffs
if(ifrans_komgSST) call rans_komgSST_set_defaultcoeffs
do i=1,ncoeffs
coeffs_in(i) =coeffs(i)
enddo
endif
c solve for omega_pert
if(ifwall) then
call copy(ywd,wdin,ntot)
else
bcw = 'W '
if(nid.eq.0) write(*,*) 'BC for distance ', bcw
c call cheap_dist(ywd,1,bcw)
call distf(ywd,1,bcw,w1,w2,w3,w4,w5)
endif
call rans_komg_omegabase
return
end
c-----------------------------------------------------------------------
subroutine rans_komg_omegabase
c
c Compute Omega base solution which diverges at walls
c
include 'SIZE'
include 'TOTAL'
include 'RANS_KOMG'
integer i,j,k,e,iph
real nu
real dudx(lx1,ly1,lz1,lelv), dudy(lx1,ly1,lz1,lelv)
$ , dudz(lx1,ly1,lz1,lelv)
real kv_min,omeg_max
omeg_max = coeffs(15)
beta0 = coeffs(6)
ntot1 = nx1*ny1*nz1*nelv
yw_min = glmin(ywd,ntot1)
do iph = 1,nph
nu = mu(iph)/rho(iph)
Cfcon = 6.0 * nu / beta0 ! 2.0 * nu0 / betainf_str !
expn = -2.0
c write(*,*) 'Cf, beta, ywd_min is ', Cfcon, betainf_str, yw_min
call gradm1 (dfdx_omegb(1,1,1,1,iph),dfdy_omegb(1,1,1,1,iph)
& ,dfdz_omegb(1,1,1,1,iph), ywd)
call opcolv (dfdx_omegb(1,1,1,1,iph),dfdy_omegb(1,1,1,1,iph)
& ,dfdz_omegb(1,1,1,1,iph), bm1)
call opdssum(dfdx_omegb(1,1,1,1,iph),dfdy_omegb(1,1,1,1,iph)
& ,dfdz_omegb(1,1,1,1,iph))
call opcolv (dfdx_omegb(1,1,1,1,iph),dfdy_omegb(1,1,1,1,iph)
& ,dfdz_omegb(1,1,1,1,iph),binvm1)
call gradm1 (dudx, dudy ,dudz, dfdx_omegb(1,1,1,1,iph))
call copy (delsqf_omegb(1,1,1,1,iph), dudx, ntot1)
call gradm1 (dudx, dudy ,dudz, dfdy_omegb(1,1,1,1,iph))
call add2 (delsqf_omegb(1,1,1,1,iph), dudy, ntot1)
call gradm1 (dudx, dudy ,dudz, dfdz_omegb(1,1,1,1,iph))
call add2 (delsqf_omegb(1,1,1,1,iph), dudz, ntot1)
c call col2 (delsqf_omegb,bm1 ,ntot1)
c call dssum (delsqf_omegb, nx1,ny1,nz1)
c call col2 (delsqf_omegb,binvm1,ntot1)
c call opgrad (dfdx_omegb,dfdy_omegb,dfdz_omegb, ywd)
c call opdssum(dfdx_omegb,dfdy_omegb,dfdz_omegb)
c call opcolv (dfdx_omegb,dfdy_omegb,dfdz_omegb,binvm1)
c call opdiv (delsqf_omegb,dfdx_omegb,dfdy_omegb,dfdz_omegb)
c call dssum (delsqf_omegb,nx1,ny1,nz1)
c call col2 (delsqf_omegb,binvm1,ntot1)
call vdot3 (delfsq_omegb(1,1,1,1,iph)
& ,dfdx_omegb(1,1,1,1,iph),dfdy_omegb(1,1,1,1,iph)
& ,dfdz_omegb(1,1,1,1,iph)
& ,dfdx_omegb(1,1,1,1,iph),dfdy_omegb(1,1,1,1,iph)
& ,dfdz_omegb(1,1,1,1,iph),ntot1)