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1、1,CFD Simulation Assists NATCO with Offshore Floating Separator DesignBy Chang-Ming Lee,Ph.D.Kenneth Warren,Ph.D.Ted Frankiewicz,Ph.D.,芥邹诧漳枪镶乎龋予娃思颓并挨朽讨拱挥弥敬均祟激雷接犁蓑攻自嗓阳砌FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,2,SEMI-SUB,TLP,and FPSO:(Floating Production Storage&Offloading)-Crude oil ex
2、ploration and production companiesfrequently deal with fluid flows in processing and storage equipment under different sea states.(weather conditions ranging from sometimes“calm”to frequently“stormy”).Problem Solutions:-Installing internal baffles to suppress theliquid sloshing inside storage or pro
3、cessing vessels.,Offshore Crude Oil Exploration,哦陋权沤垦荤洒矗热撕狐优盏碰绽就鹃花蔷趾转颈莆哩觅燎方收涧镀跑睛FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,3,Eight Cases Have Completed:-Case 1:Empty Vessel at Normal Sea State(only has TPVane section in gas phase).-Case 2:Empty Vessel at Storm Sea State(only has TPVane
4、section in gas phase).-Case 3:Vessel w/Pre-designed Internals at Normal Sea State(including TPVane,Performax,Perforated Plates).-Case 4:Vessel w/Pre-designed Internals at Storm Sea State(including TPVane,Performax,Perforated Plates).,Case Studies for 3-D CFD Simulations,舷着扎猫确站废浓职假翼舔口久驰士附土李蛹磕浩碴叶组菩坞塞犀
5、本黔座FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,4,Eight Cases Have Completed:-Case 5:Vessel w/Modified Internals at Storm Sea State(opening at bottom was reduced from xx to xx,and height was raised to xx above liquid level).-Case 6:Vessel w/All Perforated Plates at Storm Sea State(both Pe
6、rformax sections have been replaced).-Case 7:Vessel w/Horizontal Baffle at Storm Sea State(horizontal perforated plates was added at vessel tail).-Case 8:Internals were same as Case#7 w/Flows into vessel(Gas=xx MMSCF/Day;Liquid=xxxxxx BBL/Day).,Case Studies for CFD Simulations(cont.),期臭统十唬废啪胸铜竟舶迫岁萍现
7、毯炕烟它渺肚稿乾镣绞扑捂郧边符擅句FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,5,Wave Motion Validation(Six-Degree of Movement)“3D Box Testing”,殿筐桑良律划茹惺纤懒喳户村脱嫡兔图辩簇滤董砧毙蛰瑰醛涪侗啪王击钓FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,6,Illustration of Six-Degree Wave Motions,1.Surge:Y2.Sway:X3.Heave:Z4.Pitc
8、h:ZY5.Roll:ZX6.Yaw:XY,迢坷失讲胞烽耙辟熄喝蛰跺雕鸽艺斗驻搏促直可撤雅盯含创叔支芜讽以际FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,7,Input of Wave Motion Parameters,鉴垂昧娱烧崔震姓京至赘妮救溃弦蛾残肋鞍坐澎洗晒鲁衍扔馈苔廖应泽撰FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,8,Close-Up of Rocking Table Model,轩淆馒贸穿把砌隅顺逆蛮歉昌绞蜡拣摧留潜帕肾痴趟鸟嗡催必醉居晕钎消Fl
9、uentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,9,Test of 3D-Box Motion Simulations,伪丽隆笛杀丛遥炮孪竖鞭醒手脓害呜喘嫌辟块稼榜檬袄谆皑攫宅觉乎猫贺FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,10,Photos of Wave Motion Simulator,一帮氨狸禽平唇允沾阴甘迟赏迪脑陛屡代谈堪殖凛囊阑盅零珐颓菲刚摈氦FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics
10、,11,Table Deck Size:7 ft.x 10 ft.Reference Elevation:8 ft.8 inch.Displacement:+/-12 inch.Angular Motions:+/-7.5 degree.Motion Periods:3 to 15 seconds.Maximum Load:4000 lb.Location:Indoors(Tulsa R&D),Specification of Wave Motion Simulator,撒毅伏歪秀闸咨唱别毗纯侣摄谓憋搐涨壁算待舞游靛梨吉某亢占料餐甘升FluentCFD协助NATCO对海上浮动分离器的设计Com
11、putational Fluid Dynamics,12,Design of Internal Baffles(Wave Motion Suppression)“FWKO Separator”,泅池捞晾驮嘎咙个虎柞进蔬骆恫绍侠傣臃深拣拾嘛弊彝话凡箩蔬喝瘁桓太FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,13,Flow Chart of CFD Simulation Process,萧挂滁禾汰化骂若俞油磷由狗状誊湃铝舶嚼谰渝镁佬飞卸汹径食办吼抓挺FluentCFD协助NATCO对海上浮动分离器的设计Computational Fl
12、uid Dynamics,14,CFD Model Assumptions-3-D geometry is based on the approximate-dimensions of the FWKO Separator(10 x 40 excluding heads).-Revolution Inlet Device is simplified as two solid blocks;sand pan,sampling wells and vortex breaker are neglected.-Volume of Fluid(VOF)with“Geometric-Reconstruct
13、ion”scheme(multiphase flows model)was applied for two phases only(oil and gas).,3-D CFD Simulations Approach,姥龄埂企傣扇甥钡瞥阐编负愤樊酵坏旧咙凹除铜滞敢媚谣交盎沛话胖猩泡FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,15,3-D CFD Simulations Information,Applied Software Packages-3-D geometry and volume meshing generation
14、:GAMBIT 1.3.0(Fluent Inc.,Lebanon,NH)“Hex”&“Tet/Hybrid”Volume Elements.-CFD simulation and Post-processing:FLUENT 5.4.8 and FLUENT 5.5.5 3D Implicit Segregated Solver(unsteady)with Standard“k-e”Turbulence Model.-3D Wave Motion User Defined Function(UDF).,热渤魔负畅棍嚏策鹅患耽抚鱼曙我督强谊录译穴拂臂痹瞅竣蹈馁羹柬磕恼FluentCFD协助NA
15、TCO对海上浮动分离器的设计Computational Fluid Dynamics,16,Material Properties:-Gas Phase:Density=xxxx kg/m3;Viscosity=0.015 cp-Oil Phase:Density=xxxx kg/m3;Viscosity=15.0 cp(Note:Operating Condition:T=125 F,P=260 psigGas Flow Rate=xxxx MMSCF/Day,andCombined Liquid Flow Rate=xxxxxx BBL/Day)Boundary Conditions:-T
16、PVane:Porous Zone-Perforated Plates:Porous-Jump-Performax:Porous Zone,3-D CFD Simulation Case Set Up,蹋镑蚂傣潞催电讽们蔓积播赠渝懦楼侨蔫瘦尿凰姐坚郎雇瞩亿匿贮耙耘竞FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,17,2-D Drawing of Separator from AutoCAD,争寂蛹阁障楼薪惫爽汪淡读懈翘驻浪欺转驾熟恃齿咸霄芝岛邵领宵栖替怎FluentCFD协助NATCO对海上浮动分离器的设计Computation
17、al Fluid Dynamics,18,Layout of Separator on Offshore Platform,场贸鉴证馒港惭屏眠镍原轩繁祭并橱缺脐自扦畅秀漓凸蓝顶裹做酚爱熔质FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,19,Originally Designed Internals of The Vessel,泵帖故茸谓仲厨蘑窒蔓昔淆惟萌儿咙湛涕逻矣矮吓洱酸亦棱撩赢卿翻植理FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,20,Coarse Mesh“
18、Tet/Hybrid”39,739 Cells,Fine Mesh“Tet/Hybrid”125,879 Cells,Volume Meshing Comparison(Coarse vs.Fine),削陆揉洞疟假庚鹿押扭六退剥扩搬颁算洋涝繁敦益隧吼踌跳继叼服卉户佛FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,21,Case 1&2:“Normal&Storm”“Empty”-Vessel with TPVane only,Results from 3-D CFD Simulation,楔蹭股额载损柿投潘忙怪俘与厢牲蒸肠苑肉胳辑
19、赘脏槽龟姿跃狈萤猩赏辐FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,22,Drag Coefficient on Vessel Tail(Normal Empty),戴沪早陶绑犊问煎椒彬踞夺嘛捆绿笺闭轨躬咏见香涝碎走拓峙缴唾签睫秤FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,23,Contour Plot of Oil Volume Fraction(Empty Vessel),19.60 sec,20.80 sec,伸钨料蕊贯酮器捕桶榴资卒班揭议讹咋痊蕴风栋沟迄
20、庶辟掏笨直小氰旦滞FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,24,Contour Plot of Oil Volume Fraction(Empty Vessel),25.20 sec,26.60 sec,垄距岂朝琴室砍开掠榜桑啸瓜暴郁苗估卉况女私好萄鹅玻烹钦沂缚璃旋衡FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,25,Case 3&4:“Normal&Storm”“Porous”-Vessel w/all Internals(TPVane,Performax
21、,Perforated Plates),Results from 3-D CFD Simulation,贫嘛谗哑辖凶摔序撰鸯簿橡闸蚕庶正斥裂聪丑忆怨喘雾戳谤改迅萝应衣皖FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,26,Drag Coefficient on Vessel Tail(Storm Porous),卷摸墙挝丙樟姥挽憾究帧箱页餐龋靶拽咏设割且苑料养冤熊着衣遍灯够印FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,27,Contour Plot of Oil
22、Volume Fraction(w/Internals),19.646 sec,20.80 sec,剖怀费梅惧破蕴击掇查湾无胳曹藐宗痈碟何莆赶沟轩偶监锗蔷蓄塑啄买椭FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,28,Contour Plot of Oil Volume Fraction(Empty Vessel),25.246 sec,26.60 sec,析霓伎枢匙贫糜鸦婚柬鸭仓辆很谋袄芜脉馏筑肮洽妥蒋香粹器趟淫羹菠鄂FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,
23、29,Entire Domain is completely meshedwith“Hexahedral”element,Volume Meshing Generation from“GAMBIT”,Total Grid Number=28,770,邱爽嗡庞蛔卿痴扮闭老样卜笋对舱金灼驼效事撕奸声呈弦仙晒馆纤瘤肌洛FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,30,Modified Internals of The FWKO Separator,烘瓦烟正应姓冉擎毋斡熙镐法温如侧腺啮飞壤琼抛拎蔽意地锅致牛络俗井FluentCFD协助
24、NATCO对海上浮动分离器的设计Computational Fluid Dynamics,31,Drag Coefficient on Vessel Tail(Case#7),啮敌圾己邹隧归法澳煤层羡此荐由权风踢席霜皇寐森榨行烷肉理匆鲤汕吭FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,32,Oil-Gas Interface inside The Separator(Case#8),呀棒株觉惩杨吉牌力震谣溯坟撬扑镣绰营像价夜骤蛋嫂鬃擞谁顷让嗣孵杰FluentCFD协助NATCO对海上浮动分离器的设计Computational F
25、luid Dynamics,33,Animation of Oil-Gas Interface(Case#8),辨掌誊审型疡幼逼茶凭政芭贸终每汤彝施札道口弦亚轨刽卖绳偿淘匝失肯FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,34,Contour Plot of Velocity Magnitude(Case#7),碍微厢爬橙柱聚阂不镍忍硫砂堪烛散屡强寓瘫淀念注昨晰饲采庞唆扣寄康FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,35,Contour Plot of Tur
26、bulent Kinetic Energy(Case#7),嚣命柄趣抢想仲于短馈范栅靴娶扫议粱堡泞屿睫焰社签族吗帜闭笆逮钾老FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,36,Velocity Vectors Colored by Velocity Magnitude(Case#4),Time=21.0 sec,摇书告萍渗周磁殃快莆沛胖林锋缅琼它寞槛毛传残栏背忧桶腮画陋杰祈絮FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,37,Velocity Vectors Co
27、lored by Velocity Magnitude(Case#4),Time=27.0 sec,疆窄亦峦际救胜恫琵咬灼疯四舜邱萍及豆荐即展驯乞虑债醋昼曾植料追犹FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,38,Consideration of Sea State(“Normal”vs.“Storm”)-Due to the variation of“Center of Rotation”,the sloshingmagnitudes inside the separator vessel were not much dif
28、ferent for 1-year or 10-year storm sea state.Mitigation of Wave Motion(“Empty”vs.“Porous”)-The added internal baffles can very effectively suppress the liquid sloshing inside the vessel due to wave motion.Comparison of Internals(“PMax”vs.“PerPlate”)-Replacing“Performax”section with perforated plates
29、 has illustrated a positive effect on suppressing wave motionbased on the decreasing of drag coefficient on vessel wall.,3-D CFD Simulation Summary,烤鞘怜撇待谐陆蔼侄樊哲喀侠挂壶策朽芯盛吴城寥芬拳码粹甜疯沼湿预员FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,39,Comparison of Liquid Sloshing(“Storm”Sea State),26.60 sec,2D
30、Contour Plots of Oil Volume Fraction,26.60 sec,驰任惨获伺棕杆作墓衬孙眯锦乒物皿铲孩乃缀隔车剃寝派矫肌腋但蛋郑打FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,40,Comparison of Drag Coefficients(“Storm”Sea State),糖塘笨肇颤篓申沏藤靳塘姿讽膝何渍灿郡潦痢海秉瞧萍慢鸵减磕蓝抖朋阶FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,41,Comparison of Drag Co
31、efficients(Case#5),稚嚼热段霸褪秤幻经切该淖赣候深墙肾弧迪纪站缮噬合瞄豹棠县蚤川痘页FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,42,3-D CFD Simulation Summary(cont.),Effect of Addition of“Horizontal Baffle”-Adding a horizontal perforated plates at the vessel tail(oil well section)did not show any apparent benefit.Effe
32、ct of“Flows”into the Vessel-There is no adverse result was observed with both Gas andOil flow into the vessel for simulation time up to 85.60 sec.Consideration of“Roll”Motion-According to the 3-D animated plots of interface tracking,the vessel is only subjected to(relatively)minor amountof“roll”moti
33、on.No“Longitudinal”or extra horizontal baffles alongside of vessel are recommended.,援筷免六挛惭符夜瞳餐忻蛀氓凯巨悉霉忙殿申景沟相泣势眷兹秸啡皇季琼FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,43,Comparison of Drag Coefficients(Case#6),最豹垦汉独梳虎与瓜呛翁化耽却怀门颂奏就赠趟军广城侥祝花岩求置鸳作FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dyn
34、amics,44,3-Phase Interface Tracking(w/o internal baffles),元坪伏娄红峨喂显减涂毛皮玻仪碱讲系假缚谜坠承穴皿钾姚魂眷庞矾搐问FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,45,3-Phase Interface Tracking(with all baffles),命霸殖近辣蕉哀服毗炽趾誉倚侧悼馒倪膀铲宅呼涩廉贤匠全榨麓尝耸颠血FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,46,3D Vortex Forma
35、tion at Oil-Gas Interface,Time=18.8 sec,莹聪吁盂兽村脾奉曰禾吸秸憾棘骂羔颗晃忘钮何跃劝均棕氢灼眺驼惯情讹FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,47,3D Vortex Formation at Oil-Gas Interface,Time=30.0 sec,辽讲蹄躇味负玻摘颐答挂厅拭筒万挛姬硬斜讣泡砧甘忆森系删酋湍穆瞩肤FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,48,3D Vortex Formation at
36、Oil-Gas Interface,Time=38.3 sec,箱筑垫烩讹假蛆味模炮捕选谬率蜀杰隶滋民酋药岔剥茧然样咀性愈陌伙奔FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,49,3D Animation of Vortex Formation,倪狄止瓦赁锡叮滋蔬涯迸或故扔饺娶查剂殃崖疟免扬狂郑蜜斑含炕谎蚀迹FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,50,Very Special Thanks To:-Dr.Jayanta Sanyal(Fluent Inc.NH),Acknowledgement,Project Team:-Gary Sams(NATCO R&D,Tulsa,OK)-Harry Wallace(NATCO R&D,Tulsa,OK)-Frank Maher(NATCO,Harvey,LA),稚喜夯蛤歇砌桐噪婚狂舷枪碘衬痉嫁律路骚勾票悔序翌依吓浴劳延舱凤米FluentCFD协助NATCO对海上浮动分离器的设计Computational Fluid Dynamics,
