11/11/2017. Randal W. Samstag, MS, PE, BCEE Civil and Sanitary Engineer Bainbridge Island, WA US
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1 //07 Randal W. Samsag MS PE BCEE Cl and Sanar Engneer Banbrdge Island WA S To gan some ndersandng of how compaonal fld dnamcs (CFD can help s o beer ndersand waer resorce recoer facles sng an open sorce ool.
2 //07 If we know wha s happenng whn he essel hen we are able o predc he behaor of he essel as a reacor. Thogh fne n prncple he aendan complees make mpraccal o se hs approach. Ocae Leenspel (97 Compaonal fld dnamcs (CFD changes hs pcre. sng CFD we can compe hree-dmensonal eloc felds and follow neracons of reacans and prodcs hrogh a ank. We can se hs nformaon o opmze ank geomer and o mproe desgns and operaon. T IM E T O P IC IN S T R CT O R A N D A FFIL IAT IO N 8:30 o9:5 W elcom eandinrodconocfd for W R R F R andals am sagclands anar Engneer 9:5o0:00 GoodM odelngp racceforcfd Edw ardw cklencaroloengneers 0:00 o0:30 Break 0:30 o:00 InrodconoCFD sngo penfo AM N elsonm arqesblecap E :00 o:30 L nch :30 o3:00 GengS aredw ho penfo AM : Eam plecase(p arshalflm e-s ep M eshngp rep rocessngs m laonand P osp rocessng 3:00 o3:30 Break N elsonm arqesblecap E 3:30 o4:00 CFD forflow splng Edw ardw cklencaroloengneers 4:00 o5:00 O penfo AM case:flow S plng N elsonm arqesblecap E
3 //07 T IM E T O P IC IN S T R CT O R A N D A FFIL IAT IO N 8:30 o9:00 W elcom eandbrefinrodconocfd for W R R Fandnsalaonofsofw arefor parcpansw hocoldnoaenddao ne R andals amsagclands anarengneer N elsonm arqesblecap E 9:00 o9:30 CFD form ng Edw ardw cklencaroloengneers S ephens andersibis GropCFD 9:30 o0:00 O penfo AM casesd:m ng N elsonm arqesblecap E 0:00 o0:30 Break 0:30 o:00 CFD fors edm enaon:calbraonm odelng andverfcaon AlonsoGrboroHazenandS aw er :00 o:00 O penfo AM casesd:s edmenaon N elsonm arqesblecap E :00 o:30 L nch :30 o:00 CFD ofdsnfeconfacles Edw ardw cklenands ephens anders :00 o3:00 O penfo AM casesd: lraole N elsonm arqesblecap E Dsnfecon 3:00 o3:30 Break 3:30 o4:45 O penfo AM adancedopcs:m akngor N elsonm arqesblecap E ow ncases 4:45o5:00 W rap-pandadorn R andals amsagclands anarengneer IWA CFD Workng Grop The WG nends o sole shorcomngs arsng from lack of knowledge of CFD n he waer and wasewaer commn n he shor erm b prodcng papers and books as well as hands-on ranng for he IWA MIA members (and beond. Frhermore a book dedcaed for ranng new people n he waer/wasewaer feld wll be prodced. 3
4 //07 Pblshed Papers Good Modellng Pracce n Applng Compaonal Fld Dnamcs for WWTP Modellng WEFTEC 0 A proocol for he se of compaonal fld dnamcs as a sppore ool for wasewaer reamen plan modellng WST Compaonal Fld Dnamcs: an mporan modellng ool for he waer secor IWC Conference Good Modellng Pracce n Applng Compaonal Fld Dnamcs for WWTP Modellng WST (06 CFD for Wasewaer: An Oerew WST (06 Workshops WEFTEC 0 (Flen WWTMod 0 Waermae 05 (OpenFOAM WEFTEC 06 (Flow-3D WEFTEC 07 (OpenFOAM Book Proecs IWA Scenfc and Techncal Repor CFD for Waer Book for Sdens and Praconers 4
5 //07 Web: hp://rsamsag.com/ Phone: + ( Emal: rsamsag@rsamsag.com 5
6 //07 Randal W. Samsag MS PE BCEE Cl and Sanar Engneer Banbrdge Island WA S Wha s CFD? How s done? Wha s good for? Conclsons 6
7 //07 Wha s CFD (compaonal fld dnamcs?... flows and relaed phenomena can be descrbed b paral dfferenal eqaons whch canno be soled analcall ecep n specal cases. To oban an appromae solon nmercall we hae o se a dscrezaon mehod whch appromaes he dfferenal eqaons b a ssem of algebrac eqaons whch can hen be soled on he comper. - Ferzger and Perc (00 Com paonalt echnqes forflddnam cs 3 rd Edon Sprnger. Compaonal fld dnamcs hen s a separae dscplne dsnc from and spplemenng boh epermenal and heorecal fld dnamcs wh s own echnqes s own dffcles and s own realm of l offerng new perspeces n he sd of phscal processes. - Roach P.J. (98 Com paonalflddnam cs Hermosa Pblshers. CFD soles he Naer-Sokes Eqaons b nmercal schemes. Conn Eqaon: Law of Mass Conseraon 0 Momenm Eqaons: Newon s Second Law (ncompressble lamnar flow P F 7
8 //07 8 r r r g P ( nsead Term Adece Term Pressre Term Dffson Term Sorce Term (gra force S Adecon Dffson nsead Sorce
9 //07 9 Wha abo rblence? One wa o model s o se he Renolds aeraged Naer-Sokes eqaons (RANS. All flow n WRRF s rblen. Trblen flow s arable n space and me Osborne Renolds sggesed ha rblen flow cold be consdered as a compose of an aerage par and a flcang par. See Henze J. O. (975 Trblence nd Ed McGraw-Hll. r r g P S Rod (980 T rblencem odelsandt herapplcaonnhdralcs:a sae-of-hearreewiahr / AIR H.
10 //07 0 Rod (980 T rblencem odelsandt herapplcaonnhdralcs:a sae-of-hearreewiahr / AIR H. Smples model: Prandl s Mng Lengh Hpohess (Plane mng laer wdh δ Two Eqaon Models: k epslon l m G P k g k k k S k C R c G P k C f 3 ( k C l m Rod (980 T rblencem odelsandt herapplcaonnhdralcs:a sae-of-hearreewiahr / AIR H.
11 //07 RANS Smlaon (Sead Sae LES Smlaon (Transen Fne dfference Mehod of weghed resdals (fne elemen Fne olme formlaon Grd-less mehods All of hese hae been sed n CFD for wasewaer. Fne dfference was he frs echnqe sed. Fne elemen has been sed for clarfer modelng. Fne olme formlaon s he mos common commercal CFD sofware approach. Grd-less mehods hae no been mch sed b ma be promsng.
12 //07 g p ( ( ( ( ( / / / / / / / / Horzonal Momenm Eqn. n n / / g / / / 3 / - / -3/ Fne Dfference Eqalen p p Harlow F.H. and Welch J. E. (965 Nmercal Calclaon of Tme-Dependen Vscos Incompressble Flow of Fld wh Free Srface P hscsofflds V. 8 Nmber. Inerpolae he eloc and pressre felds Sbse nerpolaons no he goernng eqaons. Conn X/Y momenm Sole he ssem of eqaons erael n l l l n l l l n p p l p l l Flecher C.A.J (006 Com paonalt echnqesforflddnam cs Volm eii nd Ed. Sprnger-Verlag.
13 //07 k k+ -k pk k -k+ pk+ k+ k- V-k k +k Conn Eqn. k + k+ -k pk k -k pk k p+k +k Vk- Momenm Eqn. +k k- Momenm Eqn. +k- Paankar S. V. (980 N mercalheat ransferandfldflow Hemsphere Pblshng. Vore Mehods Deeloped b Chorn Random walk of ore blobs SPH Lagrangan mehod deeloped from asrophscs PEREIRA L. A. A.; HIRATA M. H. and SILVEIRA NETO A.. Vore mehod wh rblence sb-grd scale modellng. J.Braz.S oc.m ech.s c.& Eng. [onlne]. 003 ol.5 n. [ced ] pp
14 //07 4 Transform he goernng eqaons: Vorc / sream fncon mehod se eraon and conergence SIMPLE Boh of hese mehods hae been sed n CFD for wasewaer. Defnon of Vorc Vorc Transpor Eqn. Defnon of Sream Fncon Posson Eqn. for Sream Fncon Roach P.J. (98 Com paonalflddnam cs Hermosa Pblshers. 0 Re ( (
15 //07 Gess he pressre feld Sole he momenm eqaons Sole pressre correcon Calclae eloces Sole for oher properes (emperare solds pdae he pressre feld and erae o conergence Paankar S. V. (980 N mercalheat ransferandfldflow. 3D ranspor models can be copled o he eloc calclaons o smlae sedmenaon and mng. Solds Transpor C C s C V s C k Veslnd selng V s V o e kc Dens cople w c w s Samsag e al. (99 5
16 //07 6 Conn Eqaon: Fld Marker Eqaon: Momenm Eqaons: p p 0 F F F F= f fld s presen F=0 f fld s no presen Hr and Nchols (98 Volme of Fld Mehod Los Alamos Scenfc Laboraor Los Alamos NM. 0 An elemenar oral n OpenFOAM s based on VOF mehod sng he nerfoam soler. The famos dam break problem was smlaed frs sng he MAC mehod b Harlow and Welsh. Ths smlaon sng a RANS rblence approach.
17 //07 7 3D ranspor models can be mplemened for wasewaer qal parameers as well. Boknec Models ASM Models Adanced odaon Models Dsnfecon models Sobremsana Dcose and de los Rees III (0 0 ( d d 0 ( c c d V d d d T p ( ( ( c V c c c T p ( ( ( Crowe Sommerfeld and Ts (998 M lphaseflow sw hdroplesandp arcles.
18 //07 Mre Conn Eqaon Drf Eqaon Mre Momenm Eqaon Brennan D. (00 T hen m ercals m laonoft w o-p haseflow sns elng T anksphd Dsseraon ners of London. Wcklen e al. (06 Good modellng pracce n applng compaonal fld dnamcs for WWTP modellng W S T 73 (
19 //07 Hand Coded Forran C++ Commercal plaforms (Eamples ANSYS (Flen and CFX Cd-adapco (STAR-CCM+ and STAR-CD FLOW Scence (FLOW-3D COMSOL Mlphscs CHAM (PHOENICS Open sorce plaforms OpenFOAM 9
20 //07 0
21 //07 Wha can be done wh CFD? Wasewaer Treamen Eamples Samsag e al. (06 CFD for Wasewaer: An Oerew Waer Scence and Technolog 74 (
22 //07 Parshall Flme (Da Spler Bo (Da Mng Tank (Da Clarfer (Da V Dsnfecon (Da
23 //07 Improe flow and solds splng n dsrbon channels Opmze ank geomer Ealaon of he mpacs of reacor geomer on performance Ealaon of locaon for conrol sensors Ealae he mpacs of mng on performance Verf smpler models Improe basc ndersandng of process behaor 3
24 //07 Ferzger J.H. and Perc M. (00 Com paonalt echnqesforflddnam cs 3 rd Edon Sprnger. Roach P.J. (98 Com paonalflddnam cs Hermosa Pblshers. r and Nchols (98 Volme of Fld Mehod Los Alamos Scenfc Laboraor Los Alamos NM. Henze J.O. (975 T rblence nd Ed McGraw-Hll Rod (980 T rblencem odelsandt herapplcaonnhdralcs:a sae-of-hearreew IAHR / AIRH. Harlow F.H. and Welch J.E. (965 Nmercal Calclaon of Tme-Dependen Vscos Incompressble Flow of Fld wh Free Srface P hscsofflds V. 8 Nmber. Fnlason B. (980 N onlnearanalssnchemcalengneerngm cgraw -Hl. Paankar S. V. (980 N m ercalheat ransferandfldflow Hemsphere Pblshng. Chorn A.J. (989 Com paonalfldm echancs Academc Press. Samsag R.W. McCorqodale J.A. and Zho S.P. (99 Prospecs for ranspor modelng of process anks W aers cenceandt echnolog. 6 (5/ Hr and Nchols (98 Volme of Fld Mehod Los Alamos Scenfc Laboraor Los Alamos NM. Sobremsana Dcose and de los Rees III 0 Combnng CFD floc dnamcs and bologcal reacon knecs o model carbon and nrogen remoal n an acaed sldge ssem. Waer Enronmen Conference WEFTEC Conference. Crowe Sommerfeld and Ts (998 M lphaseflow sw hdroplesandp arcles. Wcklen E. Basone D.J. Dcose J. Laren J. Grboro A. Wcks J. Sanders S. Samsag R. Poer O. and Nopens I. 06 Good modellng pracce n applng compaonal fld dnamcs for WWTP modellng. W aers cenceandt echnolog. 73 ( R. W. Samsag J. J. Dcose A. Grboro I. Nopens D. J. Basone J. D. Wcks S. Sanders E. A. Wcklen G. Kenn and J. Laren (06 CFD for Wasewaer: An Oerew W aers cenceandt echnolog74 ( Web: hp://rsamsag.com/ Phone: + ( Emal: rsamsag@rsamsag.com 4
11/11/2017. Randal W. Samstag, MS, PE, BCEE Civil and Sanitary Engineer Bainbridge Island, WA US
11/11/017 Randal W. Samsag, MS, PE, BCEE Cl and Sanary Engneer Banbrdge Island, WA S To gan some ndersandng of how compaonal fld dynamcs (CFD) can help s o beer ndersand waer resorce recoery facles sng
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