Ansys 2024 Fluent Fluid Simulation Software Manual
MUTU 2. FLAT PLATE BUDOR LAYER
Zolinga
- Kupanga Geometry mu Ansys Workbench ya Ansys Fluent
- Kukhazikitsa Ansys Fluent for Laminar Steady 2D Planar Flow
- Kupanga Mesh
- Kusankha Bundary Conditions
- Kuwerengera Kuthamanga
- Kugwiritsa Ntchito Mapulani Kuti Muwone Munda Woyenda Wotsatira
- Fananizani ndi Theoretical Solution pogwiritsa ntchito Mathematica Code
Kufotokozera Kwavuto
M'mutu uno, tigwiritsa ntchito Ansys Fluent kuti tiphunzire kuyenda kwa laminar yamitundu iwiri pa mbale yopingasa yopingasa. Kukula kwa mbale kumaonedwa kuti ndi kopanda malire mumayendedwe a spanwise motero kuyenda kwake ndi 2D m'malo mwa 3D. Kuthamanga kwa cholowera kwa mbale yayitali ya 1 m ndi 5 m/s ndipo tikhala tikugwiritsa ntchito mpweya ngati madzi opangira ma laminar. Tikudziwitsani velocity profiles ndi kupanga profiles. Tidzayamba ndi kupanga geometry yofunikira pakuyerekeza.
Kukhazikitsa Ansys Workbench ndikusankha bwino
- Yambani ndikuyambitsa Ansys Workbench. Dinani kawiri pa Fluid Flow (Fluent) yomwe ili pansi pa Analysis Systems mu Toolbox.
Kukhazikitsa Ansys DesignModeler
- Sankhani Geometry pansi pa Project Schematic mu Ansys Workbench. Dinani kumanja pa Geometry ndikusankha Properties. Sankhani 2D Analysis Type pansi pa Advanced Geometry Options in Properties of Schematic A2: Geometry. Dinani kumanja pa Geometry mu Project Schematic ndikusankha Launch New DesignModeler Geometry. Sankhani Mayunitsi >> Millimeter ngati gawo lautali kuchokera pamenyu mu DesignModeler.
- Kenako, tikhala tikupanga geometry mu DesignModeler. Sankhani XYPlane kuchokera pa Mitengo ya Mtengo kumanzere kwa DesignModeler. Sankhani Yang'anani pa Sketch Dinani pa Sketching tabu mu Tree Outline ndikusankha Mzere
skSketchool. Jambulani mzere wopingasa 1,000 mm utali kuchokera koyambira kupita kumanja. Onetsetsani kuti muli ndi P pachiyambi pamene muyamba kujambula mzere. Komanso, onetsetsani kuti muli ndi H motsatira mzere kuti ikhale yopingasa ndi C kumapeto kwa mzerewo. Sankhani Makulidwe mkati mwa zosankha za Sketching. Dinani pamzere ndikulowetsa kutalika kwa 1000 mm. Jambulani mzere woyimirira mmwamba 100 mm utali kuyambira kumapeto kwa mzere woyamba wopingasa. Onetsetsani kuti muli ndi P poyambitsa mzere ndi V kusonyeza mzere woyimirira. Pitirizani ndi mzere wopingasa 100 mm kutalika kupita kumanzere kuchokera koyambira ndikutsatiridwa ndi mzere wina woyima wa 100 mm utali. Mzere wotsatira udzakhala wopingasa ndi kutalika kwa 100 mm kuyambira kumapeto kwa mzere wakale wolunjika ndikuwongoleredwa kumanja. Pomaliza, tsekani rectangle ndi mzere wopingasa wautali wa 1,000 mm kuyambira 100 mm pamwamba pa chiyambi ndikulunjika kumanja.
- Dinani pa Modelling tabu pansi pa Sketching Toolboxes. Sankhani Concept >> Zowonekera kuchokera ku Sketches mu menyu. Control sankhani m'mbali zisanu ndi chimodzi za rectangle ngati Base Objects ndikusankha Ikani mu Tsatanetsatane View. Dinani pa Pangani mu toolbar. Rectangle imasanduka imvi. Kudina kumanja pazenera lazithunzi sankhani Zoom to Fit ndikutseka DesignModeler.
- Tsopano tidina kawiri pa Mesh pansi pa Project Schematic mu Ansys Workbench kuti mutsegule zenera la Meshing. Sankhani Mesh mu Mauthenga a Meshing zenera. Dinani kumanja ndikusankha Pangani Mesh. Ma mesh omangika amapangidwa. Sankhani Unit Systems >> Metric (mm, kg, N ...) kuchokera pansi pa zenera lazithunzi. Sankhani Mesh >> Controls >> Face Meshing kuchokera menyu. Dinani dera lachikasu pafupi ndi Geometry pansi pa Scope in Details of Face Meshing. Sankhani rectangle pazithunzi zenera. Dinani pa Ikani batani la Geometry mu Tsatanetsatane wa "Face Meshing". Sankhani Mesh >> Controls >> Kukula kuchokera menyu ndikusankha Edge pamwamba pa zenera lazithunzi. Sankhani 6 m'mphepete mwa rectangle. Dinani pa Lemberani Jiyomethri mu "Zambiri za Kukula Kwam'mphepete". Pansi pa Tanthauzo mu "Zokhudza Kukula Kwa M'mphepete", sankhani Kukula kwa Element monga Mtundu, 1.0 mm ya Kukula kwa Element, Capture Curvature monga Ayi, ndi Kuvuta Monga Makhalidwe. Sankhani mtundu wachiwiri wa Bias ndikulowetsa 12.0 ngati Bias Factor. Sankhani m'mphepete mwam'mwamba wamfupi wopingasa ndipo Ikani m'mphepete mwa Reverse Bias. Dinani Kunyumba >> Pangani Mesh mumenyu ndikusankha Mesh mu Outline. Ma mesh omalizidwa akuwonetsedwa pawindo lazithunzi.
N'chifukwa chiyani tinapanga mauna okondera?
Tsopano tisinthanso m'mphepete mwa rectangle. Sankhani kumanzere kwa rectangle, dinani kumanja ndikusankha Pangani Named Selection.
Lowetsani cholowera monga dzina ndikudina pa OK batani. Bwerezaninso sitepe iyi pamphepete yowongoka ya rectangle ndikulowetsa dzina. Pangani kusankha kotchulidwa m'mphepete mwam'munsi mwatali wopingasa ndikuchitcha khoma. Pomaliza, lamulirani-sankhani mbali zitatu zopingasa zotsalira ndikuzitcha makoma abwino. Khoma loyenera ndi khoma la adiabatic komanso lopanda mikangano.
- Chifukwa chogwiritsa ntchito mauna okondera ndikuti timafunikira mauna abwino kwambiri pafupi ndi khoma pomwe timakhala ndi ma gradient othamanga. Tidaphatikizanso ma mesh abwino kwambiri pomwe gawo lamalire limayamba kupangika pambale lathyathyathya. Sankhani File>> Tumizani kunja…>>Una>>Kuyika KWAMBIRI File>> Tumizani kuchokera pamenyu. Sankhani Sungani monga mtundu: FLUENT Input Files (*.msh). Lowetsani malire-layer-mesh .msh the s file dzina ndikudina pa Save batani. Sankhani File>> Sungani Project kuchokera pa menyu. Tchulani pulojekitiyi kuti Flat Plate Boundary Layer. Tsekani zenera la Ansys Meshing. Dinani kumanja pa Mesh mu Project Schematic ndikusankha Kusintha.
Kukhazikitsa Ansys Mwaluso
- Mutha kuyambitsa Phunzirani m'njira ziwiri zosiyana, mwina ndikudina kawiri pa Setup pansi pa Project Schematic mu Ansys Workbench kapena mawonekedwe oyimira kuchokera ku Fluent 2024 R1 mufoda ya Ansys 2024 R1. Muyenera kuwerenga mauna ngati mutayamba Kulankhula bwino mumachitidwe oyimira. Advantage poyambitsa Ansys Fluent mu mode standalone ndikuti mutha kusankha malo a Working Directory komwe zotuluka zonse files adzapulumutsidwa, onani Chithunzi 2.6a). Yambitsani Dimension 2D ndi Double Precision Solver of Fluent. Chongani Double Precision pansi Zosankha. Khazikitsani chiwerengero cha Solver Processes chofanana ndi kuchuluka kwa ma cores apakompyuta. Kuti muwone kuchuluka kwa ma cores, dinani makiyi a Ctrl + Shift + Esc nthawi imodzi kuti mutsegule Task Manager. Pitani ku tabu ya Performance ndikusankha CPU kuchokera kumanzere. Mudzawona kuchuluka kwa ma cores kumunsi kumanja. Ansys Student ali ndi malire pa njira 4 zosinthira. Tsekani zenera la Task Manager. Dinani pa Start batani kuti mutsegule Ansys Fluent. Dinani Chabwino kuti mutseke zenera la Kusintha kwa Makhalidwe Abwino ngati likuwoneka.
Chithunzi 2.6a) Kukhazikitsa Kukhazikitsa
Chifukwa chiyani timagwiritsa ntchito kulondola kawiri?
Kulondola kawiri kudzapereka mawerengedwe olondola kwambiri kuposa kulondola kumodzi. - Onani kukula kwa mauna posankha Scale… batani pansi pa Mesh in General pa Task Page. Onetsetsani kuti Domain Extent ndiyolondola ndikutseka zenera la Scale Mesh.
- Dinani kawiri pa Models ndi Viscous (SST k-omega) pansi pa Setup in the Outline View. Sankhani Laminar ngati Viscous Model. Dinani Chabwino kuti mutseke zenera. Dinani kawiri pa Boundary Conditions pansi pa Kukhazikitsa mu Outline View. Dinani kawiri polowera pansi pa Zone pa Tsamba la Ntchito. Sankhani Zida monga Njira Yofotokozera Mayendedwe ndikukhazikitsa X-Velocity [m/s] mpaka 5.
- Dinani pa Ikani batani ndikutsatiridwa ndi Tsekani batani.
- Dinani kawiri pa ideal_wall pansi pa Zones. Yang'anani Shear Yodziwika ngati Shear Condition ndipo sungani ziro pazambiri za kumeta ubweya wina chifukwa khoma loyenera limakhala lopanda mkangano. Dinani pa Ikani batani ndikutsatiridwa ndi Tsekani batani.
Chifukwa chiyani tinasankha Laminar ngati Viscous Model?
Kwa liwiro losankhidwa laulere la mtsinje wa 5 m / s nambala ya Reynolds ndi yochepera 500,000 motsatira mbale ndipo kutuluka kwake ndilaminar. Kuthamanga kwa chipwirikiti pa mbale yathyathyathya kumachitika pa Reynolds manambala opitilira 500,000. - Dinani kawiri pa Njira pansi pa Solution mu Outline View. Sankhani Standard for Pressure ndi First Order Upwind for Momentum. Dinani kawiri pa Reference Values pansi pa Setup in the Outline View. Sankhani Compute kuchokera ku cholowetsa pa Tsamba la Ntchito.
Chifukwa chiyani timagwiritsa ntchito njira ya First Order Upwind ya Spatial Discretization of Momentum?
Njira ya First Order Upwind nthawi zambiri imakhala yosalondola koma imasinthasintha kuposa ya Second Order Upwind. Ndizozoloŵera kuyamba ndi njira ya First Order Upwind kumayambiriro kwa kuwerengera ndikupitiriza ndi Second Order Upwind njira. - Dinani kawiri pa Initialization pansi pa Solution mu Outline View, sankhani Standard Initialization, sankhani Compute kuchokera polowera, ndikudina batani la Initialize.
- Dinani kawiri pa Monitors pansi pa Solution mu Outline View. Dinani kawiri pa Residual pansi pa Owunika mu Outline View ndikulowetsa 1e-9 ngati Zofunikira Zotsalira Zonse. Dinani pa OK batani kutseka zenera. Sankhani File>> Sungani Project kuchokera pa menyu. Sankhani File>> Tumizani>> Mlandu… kuchokera pamenyu. Sungani Mlanduwo File ndi dzina la Flat Plate Boundary Layer. CAS.h5
Chifukwa chiyani tidayika Zofunikira Zokwanira ku 1e-9?
Nthawi zambiri, kutsika kwa njira zonse, kumatenga nthawi yayitali kuwerengera ndikupereka yankho lenileni. Tikuwona mu Chithunzi 2.12b) kuti ma equation a x-velocity ndi y-velocity ali ndi zotsalira zochepa kusiyana ndi continuity equation. Mapiritsi a ma curve otsalira a ma equation onse atatu ali pafupifupi ofanana ndi kutsika kwakuthwa. - Dinani kawiri pa Thamangani Kuwerengera pansi pa Solution ndikulowetsa 5000 pa Nambala Yobwereza. Dinani pa calculator batani. Kuwerengera kudzatha pambuyo pa kubwereza kwa 193, onani Chithunzi 2.12b). Dinani pa Copy Screenshot of Active Window to Clipboard, onani Chithunzi 2.12c). Ma Scaled Residuals akhoza kuikidwa mu chikalata cha Mawu.
Pambuyo pokonza
- Sankhani tabu ya Zotsatira mumenyu ndikusankha Pangani >> Line/Rake… pansi pa Surface. Lowetsani 0.2 pa x0 (m), 0.2 pa x1 (m), 0 pa y0 (m), ndi 0.02 m pa y1 (m). Lowetsani x=0.2m pa Dzina Latsopano Lapamwamba ndipo dinani Pangani. Bwerezaninso sitepe iyi katatu ndipo pangani mizere yoyima pa x=0.4m yokhala ndi kutalika kwa 0.04 m, x=0.6m ndi kutalika kwa 0.06 m, ndi x=0.8m ndi kutalika kwa 0.08 m. Tsekani zenera.
- Dinani kawiri pa Plots ndi XY Plot pansi pa Zotsatira mu Outline View. Chotsani Position pa X Axis pansi pa Zosankha ndikuyang'ana Position pa Y-axis. Khazikitsani Plot Direction ya X kupita ku 0 ndi 1 ya Y. Sankhani Mayendedwe… ndi X Mayendedwe ngati X Axis Function. Sankhani mizere inayi x=0.2m, x=0.4m, x=0.6m, ndi x=0.8m pansi pa Surfaces.
- Dinani pa Axes… batani pawindo la Solution XY Plot. Sankhani X-Axis, sankhani Auto Range pansi pa Zosankha, lowetsani 6 kwa Maximum Range, sankhani General Type pansi pa Nambala Format, ndipo ikani Precision ku 0. Dinani pa Ikani batani. Sankhani Y-Axis, osayang'ana Auto Range, lowetsani 0.01 pa Maximum Range, sankhani General Type pansi pa Nambala Format, ndikudina Ikani batani. Tsekani zenera la Axes.
- Dinani pa Curves… batani pawindo la Solution XY Plot. Sankhani mtundu woyamba pansi pa Mzere wa Mzere wa Curve # 0. Sankhani Chizindikiro cha Mtundu wa Chizindikiro ndikudina batani la Ikani. Kenako, sankhani Curve # 1, sankhani Chitsanzo chotsatira cha Mzere Wamzere, palibe Chizindikiro cha Mtundu wa Chizindikiro, ndikudina batani la Ikani. Pitirizani chitsanzo ichi chosankhidwa ndi ma curve awiri otsatirawa # 2 ndi # 3. Tsekani Ma Curves - Solution XY Plot window. Dinani pa Save/Plot batani pawindo la Solution XY Plot ndi Tsekani zenera ili. Dinani pa Copy Screenshot of Active Window to Clipboard, onani Chithunzi 2.16c).
XY Plot ikhoza kuikidwa mu chikalata cha Mawu. Sankhani tabu Yotchulidwa Mtumiki mu menyu ndi Mwambo pansi pa Ntchito Zamunda. Sankhani ntchito inayake ya Operand Field kuchokera pa menyu otsika posankha Mesh… ndi Y-Coordinate. Dinani pa Sankhani ndikulowetsani tanthauzo monga momwe tawonetsera pa Chithunzi 2.16f). Muyenera kusankha Mesh ... ndi X Coordinate kuti muphatikizepo x coordinate ndi kumaliza tanthauzo la ntchitoyo. Lowani eta ngati Dzina Latsopano la Ntchito, dinani pa Defi,ne, ndikutseka zenera. Bwerezaninso izi kuti mupange gawo lina lantchito. Nthawi ino, timasankha Kuthamanga ... ndi X Velocity monga Ntchito Zamunda ndikudina Sankhani. Malizitsani Tanthauzo monga momwe tawonetsera pa Chithunzi 2.16g) ndikulowetsani-kugawidwa-ndi-freestream-liwiro monga Dzina Latsopano la Ntchito, dinani pa Def, imodzi, ndikutseka zenera.
Chifukwa chiyani tinapanga mgwirizano wofanana?
Zikuoneka kuti pogwiritsa ntchito mgwirizano wofanana, velocity profiles m'malo osiyanasiyana amagwera pa velocity pro imodzi yofanana nayofile zomwe sizimayenderana ndi malo amtsinje. - Dinani kawiri pa Plots ndi XY Plot pansi pa Zotsatira mu Outline View. Khazikitsani X ku 0 ndi Y kukhala 1 ngati Mayendedwe a Plot. Chotsani Position pa X Axis ndikuchotsa Position pa Y-axis pansi pa Zosankha. Sankhani Custom Field Functions ndi eta ya Y-Axis Function ndikusankha Custom Field Functions ndi ogawa-ndi-freestream-liwiro la X-Axis Function. Malo a file blasius.dat m'ndandanda yanu yogwira ntchito. Izi file ikhoza kutsitsidwa kuchokera ku sdcpublications.com pansi pa Tsitsani tabu ya bukhuli. Onani Chithunzi 2.19 cha nambala ya Mathematica yomwe ingagwiritsidwe ntchito kupanga theoretical Blasius velocity profile kwa laminar malire wosanjikiza kuyenda pa mbale lathyathyathya. Monga example, m'bukhuli chikwatu chogwirira ntchito ndi mazinga:\Users\jmatsson. Dinani pa Katundu File. Sankhani Files mtundu: Onse Files (*) ndi kusankha file blasius.dat kuchokera ku bukhu lanu logwira ntchito. Sankhani malo anayi x=0.2m, x=0.4m, x=0.6m, x=0.8m, ndi zopakidwa file Chiphunzitso.
Dinani pa Axes… batani. Sankhani Y-Axis pawindo la Axes-Solution XY Plot ndikusankha Auto. Mtundu. Khazikitsani Mtundu Wocheperako ku 0 ndi Maximum Range mpaka 10. Khazikitsani Mtunduwo kuti uyandame ndi Kulondola mpaka 0 pansi pa Mawonekedwe a Nambala. Lowetsani Mutu wa Axis monga eta ndikudina Ikani. Sankhani X-Axis, sankhani Auto Range pansi pa Zosankha, lowetsani 1.2 kwa Maximum Range, sankhani Mtundu wa float pansi pa Format Number, ndipo ikani Precision ku 1. Lowani Mutu wa Axis monga u / U. Dinani Ikani ndi Tsekani zenera. Dinani pa Curves… batani pawindo la Solution XY Plot. Sankhani mtundu woyamba pansi pa Line Style ya Curve # 0, onani Chithunzi 2.16a). Sankhani Chizindikiro cha Chizindikiro cha Chizindikiro ndikudina batani la Ikani. Kenako, sankhani Mapindikira # 1, sankhani Mtundu wotsatira womwe ulipo wa Mzere Wamzere, palibe Chizindikiro cha Mtundu wa Chizindikiro, ndikudina batani la Ikani. Pitirizani chitsanzo ichi chosankhidwa ndi ma curve awiri otsatirawa # 2 ndi # 3. Tsekani Ma Curves - Solution XY Plot window. Dinani pa Save/Plot batani pawindo la Solution XY Plot ndikutseka zenerali.
- Dinani pa Copy Screenshot of Active Window to Clipboard, onani Chithunzi 2.16c). XY Plot ikhoza kuikidwa mu chikalata cha Mawu. Sankhani tabu Yotchulidwa Mtumiki mu menyu ndi Mwambo. Sankhani ntchito inayake ya Operand kuchokera pa menyu otsika posankha Mesh… ndi X-Coordinate. Dinani pa Sankhani ndikulowetsani tanthauzo monga momwe tawonetsera pa Chithunzi 2.17e). Lowetsani rex ngati Dzina Latsopano la Ntchito, dinani Define, ndipo Tsekani zenera. Dinani kawiri pa Plots ndi XPlotsot pansi pa Zotsatira mu Outline View. Khazikitsani X ku 0 ndi Y kukhala 1 pansi pa Plot Direction.
Chotsani Chotsani Position pa X Axis ndikuchotsani Ikani pa Y-axis pansi pa Zosankha. Sankhani Ma Wall Fluxes ndi Skin Friction Coefficient pa Y-Axis Function ndikusankha Custom Field Functions ndi rex ya XX-AxisFunction. Malo a file "Theoretical Skin Friction Coefficient" m'ndandanda yanu yogwirira ntchito. Dinani pa Katundu File. Sankhani Files mtundu: Onse Files (*) ndi kusankha file "Theoretical Skin Friction Coefficient". Sankhani khoma pansi pa Surfaces ndi zodzaza file Khungu Kukangana pansi File Zambiri. Dinani pa Axes… batani. Chongani X-Axis, yang'anani bokosi Lowani pansi pa Zosankha, lowetsani Re-x ngati Mutu wa Axis, ndipo musayang'ane Auto. Range pansi pa Option ikani Ochepera ku 100 ndi Maximum mpaka 1000000. Khazikitsani Mtundu kuti uyandame ndi Precision ku 0 pansi pa Nambala Format ndikudina Ikani. Chongani Y-Axis, yang'anani bokosi Lowani pansi pa Zosankha, lowetsani Cf-x monga Label, ndipo musayang'ane Auto. Range, ikani Ochepera ku 0.001 ndi Maximum mpaka 0.1, ikani Mtundu kuti uyandame, Precision mpaka 3, ndikudina Ikani. Tsekani zenera. Dinani pa Sungani / Chiwembu pawindo la Solution XY Plot. Dinani pa Curves… batani pawindo la Solution XY Plot. Sankhani chitsanzo choyamba pansi pa Lin. e Style for Curve # 0. Sankhani Chizindikiro cha Mtundu wa Chizindikiro ndikudina batani la Ikani. Ne,xt sankhani Mapindikira # 1, sankhani Mtundu wotsatira womwe ukupezeka wa Mzere Wamzere, palibe Chizindikiro cha Mtundu wa Chizindikiro, ndikudina batani la Ikani. Tsekani ma Curves - Solution XY Plot zenera. Dinani pa Save/Plot batani pawindo la Solution XY Plot ndikutseka zenerali. Dinani pa Copy Screenshot of Active Window to Clipboard, onani Chithunzi 2.16c). XY Plot ikhoza kuikidwa mu chikalata cha Mawu.- Chiphunzitso
- Mu mutu uno, tafanizira Ansys Fluent velocity profiles ndi theoretical Blasius velocity profile kwa laminar kuyenda pa mbale lathyathyathya. Tinasintha ndondomeko yolakwika ya khoma kukhala njira yofananira ndi profilem'malo osiyanasiyana othamanga. Mgwirizano wofananira umatanthauzidwa ndi pamene y (m) ndi khoma-wazolowera, amatanthauzidwa ndi
- pomwe y (m) ndi njira yolumikizira khoma, U (m/s) ndi liwiro la mtsinje waulere, x (m) ndi mtunda kuchokera komwe kumayambira pakhoma ndipo ) m2 /s) ndiye kukhuthala kwa kinematic. madzimadzi. U (m / s) ndi liwiro la mtsinje waufulu, x (m) ndi mtunda kuchokera pa chiyambi cha khoma ndi m2 / s) ndi kinematic viscosity yamadzimadzi.
Tidagwiritsanso ntchito liwiro lopanda mawonekedwe la streamwise u/U pomwe u ndi dimensional velocity profile.
u/U idakonzedwa motsutsana ndi ya Ansys Fluent velocity profiles poyerekeza ndi Blasius 'theory profile ndipo onse anagwera pa khonde lomwelo monga momwe amafotokozera kudzifananitsa.
Blasius boundary layer equation imaperekedwa ndi
Kuchuluka kwa malire kumatanthauzidwa ngati mtunda wochokera pakhoma kupita kumalo kumene liwiro la malire amalire lafika pa 99% ya mtengo waulere.
Pa mzere wa malire a lamina kapena orr tili ndi mawu ofotokozera otsatirawa pakusintha kwa makulidwe a malirewo ndi mtunda wa streamwise x ndi nambala ya Reynolds 3.
- Mawu ofananirako a makulidwe a gawo la malire mumpanda wovuta wamalire amaperekedwa ndi
- Kugundana kwapakhungu komweko kumatanthauzidwa ngati kupsinjika kwa khoma lakumeta komwe kumagawika ndi kukakamiza kwamphamvu.
- The theoretical local friction coefficient for laminar flow imatsimikiziridwa ndi
- ndi kuyenda kwa chipwirikiti, tili ndi ubale wotsatirawu
Maumboni
- Çengel, YA, ndi Cimbala JM, Fluid Mechanics Fundamentals and Applications, 1st Edition, McGraw-Hill, 2006.
- Richards, S., Cimbala, JM, Martin, K., ANSYS Workbench Tutorial - Boundary Layer on a Flat Plate, Penn State University, 18 May 2010 Revision.
- Schlichting, H., ndi Gersten, K., Boundary Layer Theory, 8th Revised and Enlarged Edition, Springer, 2001.
- White, FM, Fluid Mechanics, Edition 4, McGraw-Hill, 1999.
Zolimbitsa thupi
- Gwiritsani ntchito zotsatira za kayeseleledwe ka Ansys Fluent m'mutu uno kuti mudziwe makulidwe a malire pa malo oyenda monga momwe tawonetsera patebulo ili pansipa. Lembani zomwe zikusowa mu tebulo. Kuthamanga kwa malire ndi kuthamanga kwa malire patali kuchokera pakhoma lofanana ndi makulidwe a malire ndipo U ndiye liwiro la mtsinje waulere.
x (m) o (mm) Wolankhula bwino
o (mm) Chiphunzitso
Peresenti Kusiyana U 8 (Ms)
U (Ms)
v (m2/s)
Re x 0.2 .0000146 0.4 .0000146 0.6 .0000146 0.8 .0000146 - Sinthani kukula kwa ma element kukhala 2 mm pa mesh ndikuyerekeza zotsatira mu XY Plots of the skin striction coefficient motsutsana ndi Reynolds number ndi element size ya 1 mm yomwe idagwiritsidwa ntchito mumutu uno. Fananizani zotsatira zanu ndi chiphunzitso.
- Sinthani liwiro la mtsinje waulere kukhala 3 m/s ndikupanga XY Plot kuphatikiza velocity profiles pa x = 0.1, 0.3, 0.5, 0.7, ndi 0.9 m. Pangani Chiwembu china cha XY chokhala ndi velocity pro yofananirafiles pa liwiro lotsika la mtsinje waulere ndikupanga XY Plot ya coefficient yakhungu motsutsana ndi nambala ya Reynolds.
- Gwiritsani ntchito zotsatira zochokera ku Ansys Fluent simulation mu Exercise 2.3 kuti muwone makulidwe a malire a magawo a streamwise monga momwe tawonetsera patebulo ili pansipa. Lembani zambiri zomwe zikusowa mu tebulo.ndi kuthamanga kwa malire pamtunda pamtunda wofanana ndi makulidwe a malire ndi U ndi liwiro la mtsinje waulere.
x (m) o (mm) Wolankhula bwino
o (mm) Chiphunzitso
Peresenti Kusiyana U 8 (Ms)
U (Ms)
v (m2/s)
Re x 0.1 .0000146 0.2 .0000146 0.5 .0000146 0.7 .0000146 0.9 .0000146
Table 2.2 Kuyerekeza pakati pa Phunzirani ndi chiphunzitso cha makulidwe a malire
Sinthani liwiro la mtsinje waulere kukhala mtengo womwe walembedwa patebulo pansipa ndikupanga XY Plot kuphatikiza velocity profiles pa x = 0.2, 0.4, 0.6, ndi 0.8 m. Pangani Chiwembu china cha XY chokhala ndi velocity pro yofananirafiles chifukwa cha liwiro lanu la mtsinje waulere ndikupanga XY Plot ya coefficient yakhungu motsutsana ndi nambala ya Reynolds.
| Wophunzira | X-Kuthamanga U (Ms) | Kuchuluka Mtundu (Ms) za X Kuthamanga Chiwembu |
| 1 | 3 | 4 |
| 2 | 3.2 | 4 |
| 3 | 3.4 | 4 |
| 4 | 3.6 | 4 |
| 5 | 3.8 | 4 |
| 6 | 4 | 5 |
| 7 | 4.2 | 5 |
| 8 | 4.4 | 5 |
| 9 | 4.6 | 5 |
| 10 | 4.8 | 5 |
| 11 | 5.2 | 6 |
| 12 | 5.4 | 6 |
| 13 | 5.6 | 6 |
| 14 | 5.8 | 6 |
| 15 | 6 | 7 |
| 16 | 6.2 | 7 |
| 17 | 6.4 | 7 |
| 18 | 6.6 | 7 |
| 19 | 6.8 | 7 |
| 20 | 7 | 8 |
| 21 | 7.2 | 8 |
Tsitsani PDF: Ansys 2024 Fluent Fluid Simulation Software Manual