1729 Mini-Blogs for EPASWMM5, AutoDesk ICM SWMM, SWMM5+: #SWMM4

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Wednesday, July 12, 2017

SWMM5_NR_ITERATIVE Fortran Routine from 2004

SUBROUTINE SWMM5_NR_ITERATIVE
C EXTRAN BLOCK test for SWMM 5 beta solution - 12/12/2002
INCLUDE 'TAPES.INC'
INCLUDE 'STIMER.INC'
INCLUDE 'BD.INC'
INCLUDE 'BND.INC'
INCLUDE 'HYFLOW.INC'
INCLUDE 'CONTR.INC'
INCLUDE 'JUNC.INC'
INCLUDE 'PIPE.INC'
INCLUDE 'TIDE.INC'
INCLUDE 'OUT.INC'
INCLUDE 'ORF.INC'
INCLUDE 'WEIR.INC'
INCLUDE 'FLODAT.INC'
DOUBLE PRECISION AKON,QNEW,DELQ1,DELQ2,DELQ3,DELQ4,DELQ5
DIMENSION AS1(NEE)
DOUBLE PRECISION df,f,n_omega
integer good_nodes
C=======================================================================
C STORE OLD TIME STEP FLOW VALUES
C=======================================================================
DO N = 1,NTL
QO(N) = Q(N)
AT(N) = A(N)
VT(N) = V(N)
enddo
C=======================================================================
C INITIALIZE CONTINUITY PARAMETERS
C=======================================================================
DO J = 1,NJ
if(othercom(63).eq.1) then
Y(J) = Y(J) + 0.5 * ( YEX2(J) -
+ YEX1(J) + YEX1(J) - YO(J))
IF(Y(J).LT.FUDGE) Y(J)=FUDGE
IF(Y(J).GT.SURELEV(J)) Y(J)=SURELEV(J)-Z(J)
yex2(j) = yex1(j)
yex1(j) = YO(j)
endif
cred beginning time step value of the node area
asold(j) = as(j)
YO(J) = Y(J)
GoodNode(j) = .FALSE.
enddo
good_nodes = 0
omega = input_omega
n_omega = node_omega
loop_count = 0
C=======================================================================
C HALF-STEP AREA, RADIUS : VELOCITY
C FULL-STEP FLOW
C=======================================================================
big_loop: DO while(good_nodes.lt.nj.and.loop_count.le.itmax)
loop_count = loop_count + 1
if(loop_count.ge.itmax-5) then
omega = 0.50 * omega
n_omega = 0.50 * n_omega
endif

DO J = 1,NJ
AS(J) = AMEN
AS1(J) = 0.0
SUMQ(J) = QIN(J)
SUMQS(J) = QIN(J)
SUMAL(J) = 0.0
enddo
CIM FIRST COMPUTE GATED ORIFICE PARAMETERS
CALL OGATES(DELT,Y,V)
c
flow_loop: DO N = 1,NTC
NL = NJUNC(N,1)
NH = NJUNC(N,2)
C=======================================================================
H(N,1) = AMAX1(Y(NL) + Z(NL),ZU(N))
H(N,2) = AMAX1(Y(NH) + Z(NH),ZD(N))
CALL nhead(N,NL,NH,H(N,1),H(N,2),Q(N),A(N),V(N),HRAD,
+ ANH,ANL,RNL,RNH,YNL,YNH,width,IDOIT,LINK(N),AS1)
cred bypass loop for nodes already converged
bypass_loop: if(loop_count.gt.2.and.
+ goodnode(nl).eq..TRUE..and.goodnode(nh).eq..TRUE.) then
bypass = bypass + 1.0
else
IF(HRAD.GT.HMAX(N)) HMAX(N) = HRAD
IF(A(N).GT.AMAX(N)) AMAX(N) = A(N)
cred save information for the culvert classification
HRLAST(N) = HRAD
vup(n) = anl
vdn(n) = anh
if(loop_count.eq.1) then
aup(n) = anl
rup(n) = rnl
rmd(n) = hrad
endif
positive_flow: IF(IDOIT.gt.0) THEN
c
c Q/ANH = velocity at downstream end used for exit loss
c Q/ANL = velocity at upstream end used for entrance loss
c The loss = 1/2*K*V^2/g is factored into momentum
c equation similarly to the friction slope
c The loss momentum term = g*A*[1/2*K*V^2/g]
c = g*A*[1/2*K*Q/A*Q/A/g]
C =g *[1/2*K*|Q*A| /g] * Q
C = [1/2*K*|Q*A| ] * Q
c DELQ5 is sum of losses
c
cred calculate the froude number for every conduit
c
DELH = H(N,1) - H(N,2)
DELZP = ZU(N) - ZD(N)
DIFF_mid = 0.5 * (H(N,1) - ZU(N) + H(N,2) - ZD(N))
IF(DIFF_mid.GT.0.0) THEN
FROUDE_MID = ABS(Q(N))/A(N)/SQRT(GRVT*(DIFF_mid))
ELSE
FROUDE_MID = 0.0
ENDIF
bfactor = 0.0
if(FROUDE_MID.ge.1.0) THEN
bfactor = 0.0
elseif(froude_mid.gt.0.9) then
bfactor = 1.0 - (10.0*FROUDE_MID-9.0)
endif
cred test for zero sloped conduits
if(delzp.eq.0.0) then
del_ratio = delh/0.001
else
del_ratio = delh/delzp
endif
cred swmm 4 definition for normal flow
if(del_ratio.le.1.0) then
delfactor = 0.0
cred swmm 5 transition definition
else if(del_ratio.gt.1.10) then
delfactor = 1.0
else
delfactor = 10.0 * (del_ratio-1.0)
endif
DELQ5 = 0.0
IF(ANH.NE.0.0) DELQ5 = DELQ5 + 0.5 * ABS(Q(N)/ANH)*ENTK(N)
IF(ANL.NE.0.0) DELQ5 = DELQ5 + 0.5 * ABS(Q(N)/ANL)*EXITK(N)
IF(A(N).NE.0.0) DELQ5 = DELQ5 + 0.5 * ABS(Q(N)/A(N))*OTHERK(N)
DELQ5 = DELQ5 * DELT/LEN(N)
c
DELQ4 = DELT*V(N)*(ANH-ANL)/A(N)/LEN(N)
cred the mean area travels from the midpoint to the upstream area
cred as the value of delh/delzp changes
area_mean = wt*anl + wd*aup(n) + ( wt*a(n) + wd*at(n) -
+ wt*anl - wd*aup(n)) * delfactor

DELQ2 = DELT*GRVT*area_mean*((H(N,2) - H(N,1)))/LEN(N)
DELQ3 = 2.0*(A(N)-AT(N))/A(N)
cred the mean hydraulic radius travels from the midpoint to the
cred upstream hydraulic radius as the value of delh/delzp changes
hrad_mean = wt*rnl + wd*rup(n) + ( wt*hrad + wd*rmd(n) -
+ wt*rnl - wd*rup(n)) * delfactor
DELQ1 = DELT*(ROUGH(N)/hrad_mean**1.33333)*ABS(V(N))

QNEW = QO(N) - delq2
AKON = DELQ1 + DELQ5 - delq4*bfactor - DELQ3*bfactor
cred Newton-Raphson iteration
F = Q(N) * ( 1.0 + akon) - qnew
DF = 1.0 + akon
Q(N) = Q(N) - omega*f/df
DQDH = 1.0/(1.0+AKON)*GRVT*DELT*A(N)/LEN2(N)
dqdh_old(n) = dqdh
C=======================================================================
C DO NOT ALLOW A FLOW REVERSAL IN ONE TIME STEP
C=======================================================================
DIRQT = SIGN(1.0,QO(N))
DIRQ = SIGN(1.0,Q(N))
IF(DIRQT/DIRQ.LT.0.0) Q(N) = 0.001*DIRQ

v(n) = q(n)/A(N)
C=======================================================================
C COMPUTE CONTINUITY PARAMETERS
C=======================================================================
SELECT CASE (INGATE(N))
CASE (1)
Q(N) = AMAX1(Q(N),0.0)
CASE (2)
Q(N) = AMIN1(Q(N),0.0)
END SELECT

IF (NKLASS(N).LE.21) THEN
Q(N) = AMAX1(STHETA(N),Q(N))
Q(N) = AMIN1(SPHI(N),Q(N))
ENDIF
endif positive_flow
endif bypass_loop
SUMQS(NL) = SUMQS(NL) - Q(N)*barrels(n)
SUMAL(NL) = SUMAL(NL) + dqdh_old(n)*barrels(n)
SUMQS(NH) = SUMQS(NH) + Q(N)*barrels(n)
SUMAL(NH) = SUMAL(NH) + dqdh_old(n)*barrels(n)

SUMQ(NL) = SUMQ(NL) - WT*Q(N)*barrels(n) - WD*QO(N)*barrels(n)
SUMQ(NH) = SUMQ(NH) + WT*Q(N)*barrels(n) + WD*QO(N)*barrels(n)
ENDDO flow_loop
C=======================================================================
C SET FULL STEP OUTFLOWS AND INTERNAL TRANSFERS
C=======================================================================
CALL BOUND(Y,Y,Q,TIME,DELT)
C=======================================================================
N1 = NTC+1
DO 370 N = N1,NTL
NL = NJUNC(N,1)
NH = NJUNC(N,2)
IF(ABS(Q(N)).LT.1E-10) Q(N) = 0.0
C=======================================================================
SUMQ(NL) = SUMQ(NL) - WT*Q(N)*barrels(n) - WD*QO(N)*barrels(n)
SUMQS(NL) = SUMQS(NL) - Q(N)*barrels(n)
IF(NH.NE.0) THEN
SUMQ(NH) = SUMQ(NH) + WT*Q(N)*barrels(n) + WD*QO(N)*barrels(n)
SUMQS(NH) = SUMQS(NH) + Q(N)*barrels(n)
ENDIF
370 CONTINUE
C=======================================================================
C CALCULATE THE FULL-STEP HEAD
C=======================================================================
DO J = 1, NJ
AS(J) = AS(J) + AS1(J)
ENDDO
DO J = 1,NJ
IF(JSKIP(J).le.0) then
C=======================================================================
cred time weighted area average
if(othercom(62).eq.1) then
average_area = WT*as(j) + WD*asold(j)
else
average_area = as(j)
endif
cred Newton-Raphson iteration
yt(j) = y(j)
if(y(j).le.ycrown(j)) then
F = Y(J) * average_area - YO(J) * average_area
+ - sumq(j)*DELT
DF = average_area
ASFULL(J) = AS(J)
else
DF = sumal(j)
IF(Y(J).LT.1.25*YCROWN(J)) DF = DF +
+ (ASFULL(J)/DELT-SUMAL(J))*EXP(-15.*(Y(J)-YCROWN(J))/YCROWN(J))
cred correction from SWMM 5 QA testing - 11/12/2004
cred if a large delt or if there is a large value of sumal(j)
cred - usually from a very large conduit connected to the current node -
cred the expression ASFULL(J)/DELT-SUMAL(J) may be negative
cred invalidating the whole concept of a "transition" slot
if(Y(J).LT.1.25*YCROWN(J).le.ASFULL(J)/DELT.le.SUMAL(J))
+ denom = sumal(j)
CORR = 1.00
IF(NCHAN(J,2).EQ.0) CORR = 0.60
F = Y(J) * DF - YO(J) * DF - CORR * sumqs(j)
cred WRITE(*,*) ajun(j),df,f,y(j),ycrown(j),sumal(j)
endif
Y(J) = Y(J) - n_omega*F/DF
IF(Y(J).LT.0.0) Y(J) = 0.0
IF((Y(J)+Z(J)).GT.SURELEV(J)) Y(J) = SURELEV(J)-Z(J)
endif
enddo

cred converge until all nodes meet the convergence criteria
good_nodes = 0
error_node = 0
i_was_bad = 1
DO j = 1,nj
if(jskip(j).le.0) then
if(abs(y(j)-yt(j)).le.node_toler) then
good_nodes = good_nodes + 1
GoodNode(j) = .TRUE.
endif
if(abs(y(j)-yt(j)).gt.error_node) then
error_node = abs(y(j)-yt(j))
i_was_bad = j
endif
else
good_nodes = good_nodes + 1
GoodNode(j) = .TRUE.
endif
enddo
c write(*,669) loop_count,nj-good_nodes,error_node,
c + delt,ajun(i_was_bad),y(i_was_bad),
c + sumq(i_was_bad),omega
669 format(2I6,F10.4,F8.2,1x,a12,3F9.3)
enddo big_loop

cred culvert information - 8/6/2002
cred culvert information for the culvert comparison file - 8/6/2002
cred culvert information - 8/6/2002
if(othercom(90).eq.1) then
do n = 1,nc
if(nklass(n).eq.1.or.nklass(n).eq.21) then
if(abs(q(n)).gt.culvert_loss(n,5).and.abs(v(n)).lt.20.0)then
HW = H(N,1) - ZU(N)
TW = H(N,2) - ZD(N)
vup(n) = v(n)
vdn(n) = v(n)
head_loss = 0.5*ENTK(N)*vup(N)*vup(N)/GRVT +
+ 0.5*EXITK(N)*vdn(N)*vdn(N)/GRVT +
+ 0.5*OTHERK(N)*v(N)*v(N)/GRVT
sfloss = ROUGH(N)/GRVT *
+ abs(v(N))*ABS(v(N))/hrlast(n)**1.33333
cred sfloss = ROUGH(N)/GRVT *
cred + Q(N)*ABS(Q(N))/(A(N)**2*HRLAST(N)**1.33333)
culvert_loss(n,1) = len(n)*sfloss
culvert_loss(n,2) = head_loss
culvert_loss(n,3) = h(n,1)
culvert_loss(n,4) = h(n,2)
culvert_loss(n,5) = q(n)
endif
CALL DEPTHX(N,NKLASS(N),q(n),YC,YNORM)
cred type 1
IF(HW.LT.1.5*DEEP(N).AND.YC.LT.YNORM.and.
+ TW.LE.YC) then
culverted(N,1) = culverted(N,1) + DELT
culverted(n,8) = 1
endif
cred type 2
IF(HW.LT.1.5*DEEP(N).AND.YC.LT.YNORM.AND.
+ TW.GT.YC.AND.TW.LE.DEEP(N)) then
culverted(N,2) = culverted(N,2) + DELT
culverted(n,8) = 2
endif
cred type 3
IF(YC.GE.YNORM.AND.TW.LT.ZU(N)-ZD(N)) then
culverted(N,3) = culverted(N,3) + DELT
culverted(n,8) = 3
endif
cred type 4
IF(YC.GE.YNORM.AND.TW.GE.ZU(N)-ZD(N)+YC.
+ AND.TW.LT.ZU(N)-ZD(N)+DEEP(N)) then
culverted(N,4) = culverted(N,4) + DELT
culverted(n,8) = 4
endif
cred type 5
IF(YC.LT.YNORM.AND.TW.GE.DEEP(N)) then
culverted(N,5) = culverted(N,5) + DELT
culverted(n,8) = 5
endif
cred type 6
IF(YC.GE.YNORM.AND.TW.GE.ZU(N)-ZD(N)+
+ DEEP(N)) then
culverted(N,6) = culverted(N,6) + DELT
culverted(n,8) = 6
endif
cred type 7
IF(HW.GE.1.5*DEEP(N).AND.TW.LT.DEEP(N)) then
culverted(N,7) = culverted(N,7) + DELT
culverted(n,8) = 7
endif
endif
enddo

endif
RETURN
END

Sunday, July 9, 2017

#SWMM3 and #SWMM4 Acknowledgments, includes mention of #PCSWMM

A note from the past, the SWMM3 and SWMM4 Acknowledgments from their respective manuals for the sake of posterity and in thanks for all of their past efforts.

SWMM4 Acknowledgments

Maintenance and updating of the EPA SWMM has been continuous since its
inception in 1969-70.

Over the many intervening years many individuals have contributed to its improvement, notably EPA colleagues Mr. Richard Field, Mr. Harry Torno, Mr. Chiu-Yuan Fan, Mr. Doug Ammon and Mr. Tom Barnwell. Mr. Torno and Mr. Barnwell have also managed the Storm and Water Quality Model Users Group (formerly the SWMM Users Group), a source of invaluable feedback from model users, including a large contingent from Canada and abroad.

Too many individuals have contributed to specific improvements to list here. This users manual, however, is based upon earlier versions to which the following persons contributed significant authorship while at the University of Florida: Mr. Brett A. Cunningham, Mr. Victor Gagliardo, Dr.Stephen J. Nix, Mr. Donald J. Polmann and Mr. W. Alan Peltz. In particular, Mssrs. Cunningham and Gagliardo developed the new subsurface routing routine in the Runoff Block. Dr. James P.Heaney has served staunchly as colleague, critic, and pioneer of new ideas. Omission of these names from the current list of authors does not diminish our gratitude for current and past efforts in developing the model.

The Extran Block is one of the most valuable and widely-used components of SWMM. Dr. Larry A. Roesner and Mr. John A. Aldrich of Camp, Dresser and McKee, Inc., one of the three original SWMM developers, have given generously of their time to enhance Extran and to provide useful suggestions for improvements of Extran and the rest of the SWMM model. The Fortran-77 code for Version 4 of SWMM is based on a microcomputer version prepared by Mr. Richard M. Baker and Mr. Karl J. Brazauskas of Metcalf and Eddy, Inc., another one of the original three developers. Much of the user’s manual text for Version 4 has been adapted from a computerized edition of the Version 3 manuals prepared by Dr. William James of Wayne State University. We are grateful to Dr. James and to Dr. Stephen Nix of Syracuse University for their helpful comments regarding Version 4. Assistance in printing of the manuals was provided by KBN Applied Sciences and Engineering, Inc. of Gainesville.

At the University of Florida, invaluable word-processing and SWMM dissemination duties have been performed faithfully by Ms. Doris Smithson. Main-frame computations were performed at the Northeast Regional Data Center on the University of Florida campus, Gainesville.

SWMM3 Acknowledgements

Maintenance and updating of the EPA SWMM has been continuous since its
inception in 1969-70. Over the several intervening years, many
individuals have contributed to its improvement, most notably EPA
colleagues Richard Field, Harry Torno, Chi-Yuan Fan, Doug Ammon and
Tom Barnwell. Harry Torno and Tom Barnwell have also managed the SWMM
Users Group, through which many helpful suggestions for improvements
have come, including those from the large contingent of Canadian
users.

Regarding specific components of SWMM Version III, the Green-Ampt
infiltration routines were reviewed, programmed and tested by Dr.
Russell G. Mein, Department of Civil Engineering, Monash University,
Clayton, Victoria, Australia while on a sabbatical at the University
of Florida. He also provided valuable review and testing of other
model components. The earliest implementation of continuous simulation
in the Runoff and Storage/Treatment Blocks was done by George F.
Smith, now with the Office of Hydrology, National Weather Service,
Silver Spring, Maryland. Basic formulation of the snowmelt routines
was done following the work of Proctor and Redfern, Ltd. and James F.
MacLaren, Ltd., Toronto, who were under contract to the Ontario
Ministry of the Environment and the Canadian Environmental Protection
Service. Runoff Block surface quality changes were the subject of
masters research at the University of Florida by Douglas C. Ammon, now
with the EPA, Storm and Combined Sewer Branch, Cincinnati. Revision of
Transport Block scour/deposition routines is based on work with Dennis
Lai, Clinton-Bogert Associates, Fort Lee, New Jersey. Many lasting
improvements in SWMM programming were made by W. Alan Peltz, now with
General Electric, Atlanta.

Several others contributed to changes in the model. The card ID system
and the user-defined default values and ratios were suggested by the
Corps of Engineers, Hydrologic Engineering Center, Davis, California.
The programming basis has been aided by Dr. William James, McMaster
University, Hamilton, Ontario and exposure to his FASTSWMM programs.
Emphasis upon proper use and objectives of SWMM modeling has been
enhanced by conversations with the late Murray McPherson, Marblehead,
Massachusetts, Eugene Driscoll, Oakland, New Jersey, Dr. Dominic
DiToro, Manhattan College, New York City, John Mancini, Lincoln,
Nebraska, Dr. Paul Wisner, Ottawa University, Charles Howard,
Vancouver, B.C., and several others. OF is additionally grateful to
Reinhard Sprenger, Templeton Engineering, Winnipeg, for improvements
to the Extran Block, to Christian Eicher, Gore and Storrie, Ltd.,
Toronto, for several important corrections to the overall program, to
Robert Johnson, Lehigh University, Bethlehem, Pennsylvania, for
comments on the compatibility with CDC machines, to Tom Jewell, Union
College, Schenectady, New York, for analysis of surface washoff and
other comments, and to Tom Meinholz and Richard Race, formerly of
Envirex, Inc., Milwaukee, for suggestions on making the program more
suitable to prototype configurations.

The Extended Transport Block has been an invaluable addition to the
SWMM package. Developed by Water Resources Engineers (now a part of
Camp, Dresser and McKee), Extran may be the most widely used portion
of SWMM. Dr. Larry Roesner and the late Dr. Robert Shubinski of CDM,
Annandale, Virginia have given generously of their time in enhancing
Extran and in making other useful suggestions to SWMM modeling.

At the University of Florida, salutary programming and testing has
been conducted by J. Jay Santos, Efi Foufoula, Michael Kennedy, Kelly
Nead and Christina Neff. Typing has been performed by Linda Trawick,
Jeanette Heeb, Kim Karr and the College of Engineering Word Processing
Center. Figures were drafted by Terri Schubert, Micky Hartnett and
Anelia Crawford. Computations were performed at the Northeast Regional
Data Center on the University of Florida campus, Gainesville.

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SWMM456.COM (previously known as SWMM5.NET) is a mini-blog that provides short and concise articles about various topics related to Stormwater Management Model (SWMM). Each post on the blog is no more than 150-200 words (about 1300 characters) in length and aims to deliver instant information, opinion, or introduction on a specific topic related to SWMM. The blog covers a wide range of topics, including tips and tricks for using SWMM, case studies, software updates, and news related to the field of stormwater management. The goal of the blog is to provide useful and relevant information to SWMM users and professionals in the stormwater management industry in a quick and easy-to-digest format.

Information

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Best New Blog: http://blog.innovyze.com/2014/11/30/advanced-calibration-graphs-and-advanced-reference-graphical-comparisons-in-infoswmm-13/ The Current InfoSWMM Version is InfoSWMM v14 which is based on EPA SWMM 5.1.010 You can read about SWMM5 on Wikipedia and InfoSWMM vs SWMM 5 on this blog post. An advantage of updating to the newer version of Info/Map/SWMM/Sewer is a newly designed help file with many more FAQ’s and the User Guide as part of the help file. You can use the Google translate tool at the top of the right hand side to translate any and all blog posts.