5. SONUÇLAR VE ÖNERøLER 97
5.2 Öneriler 102
Deneylerin yapÕldÕ÷Õ ölçme sisteminin kullanÕlmasÕ sÕnÕrlÕ olmasÕ ve imkanlarÕn kÕsÕtlÕ olmasÕndan dolayÕ aúa÷Õda önerilen çalÕúmalardan bazÕlarÕ bu tez çalÕmasÕ kapsamÕna gerçekleútirilememiútir.
YapÕlan tez çalÕúmasÕnda incelenen parametrelerin aralÕklarÕ arttÕrÕlarak elde edilen sonuçlar geniúletilebilir. Böylece akÕú yapÕlarÕndaki geçiúin gerçekleúti÷i daldÕrma oranlarÕnÕn kritik de÷erleri tespit edilebilir. Benzer úekilde elde edilecek veriler yapay sinir a÷larÕ gibi istatistiksel matematik yaklaúÕmlar için kullanÕlabilir. Bu korelasyonlar tasarÕm ve do÷rulama çalÕúmalarÕnda, HAD çalÕúmalarÕnÕn do÷rulanmasÕnda faydalÕ olacaktÕr.
Tez çalÕúmasÕnda sadece iki hÕz bileúeni ölçülmüútür. Bu yaklaúÕmda ölçüm düzlemine dik do÷rultudaki hÕz bileúeni ölçülememiútir. DolayÕsÕyla gelecek çalÕúmalarda benzer akÕú úartlarÕ stereo PIV yöntemiyle incelendi÷inde 3 boyutlu akÕú yapÕsÕ incelenebilir.
Gelecekte yapÕlacak PIV çalÕúmalarÕnda aynÕ akÕú úartlarÕ için örnekleme sayÕsÕnÕn arttÕrÕlmasÕyla akÕú alanÕnÕn belirli noktalarÕnda spektrum incelemesi yapÕlabilir. Örnekleme frekansÕ arttÕrÕlarak küre arkasÕnda oluúan büyük ölçekli girdaplarÕn frrekansÕ ve bunlarÕn serbest yüzey ve birbirleri ile oluúan Sub-harmonik frekanslarÕ tespit edilebilir.
Elde edilen veriler her ne kadar küre üzerine etkiyen kuvvetler hakkÕnda fikir verse de sürüklenme ve kaldÕrma kuvvetleri bu çalÕúmada ölçülememiútir. Gelecekte yapÕlacak çalÕúmalarda load cell (yük hücresi), basÕnç ölçüm sensörleri ve uygun elektronik donanÕmÕ kullanÕlarak küre üzerine etkiyen kuvvetler ölçülebilir, salÕnÕm ve titreúim ölçülebilir ve pasif kontrol yöntemlerinin etkileri ile serbest akÕú yüzeyinin küre üzerine etkiyen kuvvetlere etkisi araútÕrÕlabilir.
AyrÕca bu çalÕúmalarÕn parametrelerine dönük úu geliútirmeler yapÕlabilir;
x Kürenin pürüzlülük de÷eri de÷iútirilebilir. Bu amaçla küre yüzeyinde farklÕ geometrilerde, sayÕlarda ve derinliklerde oyuklar açÕlabilir.
x AkÕú do÷rultusunun küre merkezi ile çakÕútÕ÷Õ eksene farklÕ kesit ve geometrilerde delikler delinerek etkisi incelenebilir.
x Günümüzde su yüzeyinde yakÕn seviyelerde su altÕnda çok çeúitli mühendislik uygulamalarÕ yapÕlmaktadÕr. Bu uygulamalar dikkate
alÕnarak serbest su yüzeyine yakÕn konumlarda birden fazla kürenin akÕú yapÕsÕ açÕsÕndan serbest yüzey ile etkileúimi araútÕrÕlabilir.
x Uygulamada küre kendi etrafÕnda dönebilmektedir. DolayÕsÕyla bu hareketin sürüklenme, kaldÕrma ve küre art izine etkisi incelenebilir.
Pratik uygulamada küre veya yarÕ küresel geometrideki cisimlerin silindir gibi di÷er cisimlerle birleútirilerek elde edilen yeni geometriler (füze, torpido, yakÕt tanklarÕ v.b.) çevresindeki akÕú yapÕlarÕ incelenebilir.
Deneylerde kullanÕlan su tünelinin türbülans úiddetinin ve serbest yüzeydeki çalkantÕnÕn artmasÕndan dolayÕ küre çapÕna göre tarif edilen Reynolds sayÕsÕ de÷eri 2500Re10000 aralÕ÷Õ ile sÕnÕrlandÕrÕlmÕútÕr. Özellikle pürüzsüz küre için elde edilen deneysel sonuçlar kullanÕlarak geliútirilecek hesaplamalÕ akÕúkanlar dinami÷i programlarÕ ile daha yüksek Reynolds sayÕlarÕnda akÕú karakteristikleri belirlenebilir. Bunun yanÕnda yüksek Reynolds sayÕlarÕ için pasif akÕú kontrolü uygulanan küre modelleri için HAD metodu ile detaylÕ araútÕrmalar yapÕlabilir.
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ÖZGEÇMøù
KøùøSEL BøLGøLER
AdÕ SoyadÕ : Sercan DOöAN
Uyru÷u : T.C.
Do÷um Yeri ve Tarihi : Ere÷li-KONYA / 10.01.1988
Telefon : 0546 5000 988
e-mail : sercandogan@selcuk.edu.tr EöøTøM
Derece AdÕ, ølçe, øl Bitirme YÕlÕ
Lise : Ere÷li Anadolu Lisesi, Ere÷li, KONYA 2006
Üniversite : Selçuk Üniversitesi, Makine Mühendisli÷i Selçuklu,
KONYA 2010
Yüksek Lisans : Selçuk Üniversitesi, Fen Bilimleri Enstitüsü, Makine Mühendisli÷i A.B.D. Selçuklu, KONYA
2010-devam ediyor øù DENEYøMLERø
YÕl Kurum Görevi
2010-2011 NURTOPRAK Oil cooler & Intercooler Proje Mühendisi
2011-.... Selçuk Üniversitesi FBE Makine
Mühendisli÷i Enerji Anabilim DalÕ AraútÕrma Görevlisi 17 Ekim-17 Ocak
2012-2013
Univeristy of Bath HavacÕlÕk Bölümü
(YÖK Bursu, 3 Ay süre) AraútÕrma Görevlisi
UZMANLIK ALANI
AkÕúkanlar Mekani÷i uygulamalarÕ, AkÕú kontrol yöntemleri, AkÕú Görüntüleme ve ParçacÕk Görüntülemeli HÕz Ölçme Tekni÷i, Enerji Sistemleri ve UygulamalarÕ,IsÕ de÷iútiricileri
YABANCI DøLLER øngilizce
ÜDS Fen Bilimleri :60
BELøRTMEK øSTEöøNøZ DøöER ÖZELLøKLER Sertifikalar
1
)
ISO 9001, 14000, 18000 E÷itim SertifikalarÕ, 2011 2) Solidworks Temel E÷itim SertifikasÕ, 20103) ANSYS Fluent Temel E÷itim SertifikasÕ, 2012 4) ANSYS Fluent øleri Düzey E÷itim SertifikasÕ, 2013
YAYINLAR
International Science Citation (SCI) Index'ce Taranan Dergilerde YayÕnlanmÕú Makaleleri
1. Özgören M, Okbaz A, Do÷an S, ùahin B, Akilli H, 2013, Investigation of Flow Characteristics around a Sphere Placed in a Boundary Layer over a Flat Plate,
Experimental Thermal and Fluid Science, 62-74, DOI information:
10.1016/j.expthermflusci.2012.05.014. (Yüksek lisans tezinden hazÕrlanmÕútÕr.) 2. Dogan S, Özgören M, Okbaz A, Sahin B, Akilli H, 2013, Interaction of Three
Dimensional Separated Flows Downstream of a Sphere with a Free Surface, Journal of Applied Ocean Research isimli dergiye yüklenecektir.
Di÷er uluslararasÕ hakemli dergilerdeki yayÕnlar
1. Ozgoren, M., Dogan, S., Okbaz, A., Sahin, B., Akilli, 2012, H., Passive Control of Flow Structure Interaction between a Sphere and Free-Surface, Experimental
Fluid Mechanics 2011 (EFM2011), EPJ Web of Conferences, Czech Republic,
pp.347-362, 22nd-25th November 2011. (Yüksek lisans tezinden hazÕrlanmÕútÕr.) 2. Özgören, M., ve Dogan, S., 2011, Quantitative Flow Characteristics For Side-
By-Side Square Cylinders Via PIV, Experimental Fluid Mechanics 2012
(EFM2011), EPJ Web of Conferences, Czech Republic, pp.363-376, 22nd-25th
November 2011.
3. Ozgoren, M., Okbaz, A., Dogan, S., Sahin, B., Akilli, H., 2012, Turbulent shear Flow downstream of a sphere with and without an o-ring located over a plane boundary, Experimental Fluid Mechanics 2011 (EFM2011), EPJ Web of
Conferences, Czech Republic, pp.874-887, 22nd-25th November 2011.
4. Ozgoren, M., Dogan, S., Okbaz, A., Aksoy, M. H., Sahin, B. ve AkÕllÕ, H., 2013, Comparison of Flow Characteristics of Different Sphere Geometries Under the Free Surface Effect, Experimental Fluid Mechanics 2012 (EFM2012), EPJ Web
of Conferences, Czech Republic, pp.536-545, 20th-23rd November 2012.
(Yüksek lisans tezinden hazÕrlanmÕútÕr.)
5. Ozgoren, M., Aksoy, M.H., Bakir, C. ve Dogan, S., 2013, ExperÕmental Performance InvestÕgatÕon Of PhotovoltaÕc/Thermal (Pv-T) System,
Experimental Fluid Mechanics 2012 (EFM2012), EPJ Web of Conferences,
Czech Republic, pp.546-551, 20th-23rd November 2012. UluslararasÕ Konferans Makaleleri
1. Ozgoren, M., Dogan, S., Okbaz, A., Sahin, B., Akilli, 2011, H., Passive Control of Flow Structure Interaction between a Sphere and Free-Surface, Experimental
Fluid Mechanics, Jiþín, Czech Republic. (Yüksek lisans tezinden
hazÕrlanmÕútÕr.)
2. Ozgoren, M., Dogan, S., Okbaz, A., Aksoy, M. H., Sahin, B. ve AkÕllÕ, H., 2012, Comparison of Flow Characteristics of Different Sphere Geometries Under the Free Surface Effect, Experimental Fluid Mechanics (EFM2012), EPJ Web of
Conferences, Czech Republic, Hradec Králové, 536-545. (Yüksek lisans
tezinden hazÕrlanmÕútÕr.)
3. Ozgoren, M., Dogan, S., Okbaz, A., Sahin, B., Akilli, H., 2012, Free Surface and An O-Ring Effects in the Downstream of A Sphere, 6th International Ege
Energy Symposium and Exhibition øzmir, Türkiye. (Yüksek lisans tezinden hazÕrlanmÕútÕr.)
4. Özgören M., Do÷an, S., Okbaz, A., ùahin, B. ve AkÕllÕ, H., 2012, Investigation of Roughness Effect on The Flow Structure around a Sphere Placed Different Locations Beneath the Free Surface of Water Flow, International Journal of
Arts & Sciences Conference (IJAS), Gottenheim, Germany.
5. Özgören, M., ve Dogan, S., 2011, Quantitative Flow Characteristics For Side- By-Side Square Cylinders Via PIV, Experimental Fluid Mechanics Conference Liberec, Czech Republic, 363-377, page 1-14.
6. Canli, E., Darici, S., Dogan, S. ve Özgören, M., 2011, Experimental Performance Analysis Of Finned In Line Circular Tube Bank Intercooler Configuration At Low Range Thermal Capacity Ratios, International Scientific
Conference, Gabrovo, Bulgaria, 377-382, 18-19 November.
7. Dogan, S., Canli, E., Özgören, M. ve Erdogan, K., 2011, A Test Setup For Oil Coolers and Offset-Offset Fin Configuration Test, International Scientific
Conference, Gabrovo, Bulgaria, 386-392, 18-19 November.
8. Ozgoren, M., Okbaz, A., Dogan, S., Sahin, B., Akilli, H., Effect of Passive Jet on the Turbulent Wake of a Sphere Exposed to a Boundary Layer Flow over a Flat plate, 6th International Ege Energy Symposium and Exhibition, øzmir. 9. Ozgoren, M., Okbaz, A., Dogan, S., Sahin, B., Akilli, H., 2011, Turbulent shear
Flow downstream of a sphere with and without an o-ring located over a plane boundary, Experimental Fluid Mechanics, Jiþín, Czech Republic.
10. Ozgoren, M., Dogan, S., Okbaz, A., Sahin, B., Akilli, H., 2011, Comparison of Flow-Structure Around A Smooth and Roughened Sphere In A Turbulent Boundary Layer, International Scientific Conference, Gabrovo, Bulgaria,193- 200.
11. Ozgoren, M., Dogan, S., Okbaz, A., Sahin, B., H.AkÕllÕ, 2011, Investigation of Surface Roughness Effect on the Flow Structure around A Sphere, 6. Ankara
International Aerospace Conference, METU, Ankara, Türkiye.
12. Ozgoren, M., Okbaz, A., Kahraman, A., Hassanzadeh, R., Sahin, B., AkÕllÕ, H. ve Dogan, S., 2011, Experimental Investigation of the Flow Structure around a Sphere and Its Control with Jet Flow via PIV, The sixth International Advanced
Technologies Symposium, FÕrat University, ElazÕg.
13. Ozgoren, M., Okbaz, A., Dogan, S., Kahraman, A., Hassanzadeh, R., Sahin, B. ve AkÕllÕ, H., 2011, Passive Control of Vortical Flow Structure around a Sphere by an O-ring, The sixth International Advanced Technologies Symposium, FÕrat University, ElazÕg.
14. Özgören, M., Kocak, S., Canli, E., Aksoy, M. H. ve Dogan, S., 2012, Developments, Applications and Policies of Renewable Energy in Turkey,
International Journal of Arts & Sciences Conference (IJAS), Piazza della Calza,
Florence, Italy, June 19-22.
15. Darici, S., Canli, E., Dogan, S. ve Özgören, M., 2012, Determination of Heat Transfer Rate and Pressure Drop Performance of an Intercooler for Heavy Duty Engines, International Journal of Arts & Sciences Conference (IJAS), Piazza della Calza, Florence, Italy, June 19-22.
16. Canli, E., Darici, S., Dogan, S. ve Özgören, “Design And Implementation Of An Experimental Setup For Assessment Of Thermal And Hydraulic Performance Of Compact Heat Exchangers”, 6th International Ege Energy Symposium & Exhibition, June 28-30, 2012, Izmir Turkey.
17. Ozgoren, M., Aksoy, M.H., Bakir, C. ve Dogan, S., ExperÕmental Performance InvestÕgatÕon Of PhotovoltaÕc/Thermal (Pv-T) System, Experimental Fluid
Mechanics 2012 (EFM2012), Hradec Králové, EPJ Web of Conferences, Czech
Republic, 20th-23rd November, pp.546-551.
18. Okbaz A., Ozgoren M., Dogan S., Sahin B. and Akilli H., 2013, Investigation of the Effect of Passive Jet Flow Through Holes with Different Diameters on the Flow Structure of A Sphere Wake Located in a Turbulent Boundary Layer Via PIV, 8th World Conference on Experimental Heat Transfer, Fluid Mechanics,
and Thermodynamics, June 16-20, 2013, Lisbon, Portugal.
19. Ozgoren, M. , Canli, E., Dogan, S. Aksoy, M.H., A.Okbaz, Sahin, B. and Akilli, H., 2013, Experimental Determination of Effects of Free Surface and its Interaction with Sphere Wake Flow for an Inline two Spheres, 8th World
Conference on Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics, June 16-20, 2013, Lisbon, Portugal.
20. Dogan, S., Ozgoren, M., Canli, E. and Aksoy, M.H., 2013, Passive Flow Control Effect with Porous Forming by Knitted Around a horizontal Cylinder on the flow structure, 8th International Green Energy Conference, June 17-19, 2013, Kiev, Ukraine.
21. Canli, E., Ozgoren, M., Aksoy, M.H., Dogan, S. and AkÕllÕ, H., 2013, Evaluation of flow around 30 degree angled double sphere arrangements in a turbulent boundary layer in respect of ocean energy structures, 8th International
Green Energy Conference, June 17-19, 2013, Kiev, Ukraine.
Ulusal Konferans Makaleleri
22. 1.Ozgoren, M., Okbaz, A., Dogan, S., Hassanzadeh, R., FÕrat, E., Sahin, B. ve AkÕllÕ, H., 2011, Visualization of Turbulent Flow Structure around a Sphere and its Passive Control at Moderate Reynolds Numbers, KullanÕcÕ KonferansÕ, østanbul Ex-en Mühendislik Test Simülasyon
23. Özgören, M., Do÷an, S., Okbaz, A., ùahin, B., AkÕllÕ, H., 2011, Küre Serbest Yüzey Etkileúimiyle Oluúan TürbülanslÕ AkÕú YapÕsÕnÕn Deneysel AraútÕrÕlmasÕ, 18. Ulusal IsÕ Bilimi Kongresi, Zonguldak. (Yüksek lisans tezinden hazÕrlanmÕútÕr.)
24. Özgören.M., Okbaz, A., Do÷an, S., ùahin, B., AkÕllÕ, H., 2011, Küre SÕnÕr Tabaka Etkileúiminin PIV Yöntemiyle AraútÕrÕlmasÕ, 18. Ulusal IsÕ Bilimi Kongresi, Eylül 7-10, Zonguldak, Türkiye (Yüksek lisans tezinden yapÕlmÕútÕr.) 25. Dogan, S., Özgören, M. ve Erdo÷an, K., 2011, Kompakt IsÕ De÷iútiricilerinde
IsÕ Transferi øyileútirme MetotlarÕ ve Ya÷ So÷utucu Endüstriyel UygulamasÕ, 3.Ulusal Konya Ere÷li Kemal Akman Meslek Yüksekokulu Tebli÷ Günleri, 28-29 Nisan 2011, Konya
26. Özgören, M., Koçak, S., CanlÕ, E., Aksoy, M. H. ve Dogan, S., 2012, Sustainable Energy Use in Industry and Renewable Energy Detection of Konya (In Turkish: ''Konya Endüstrisinde Sürdürülebilir Enerji KullanÕmÕ ve Yenilenebilir Enerji AlgÕlamasÕ')', Mevlana Kalkınma Ajansı 3K Dergisi, SayÕ:2, MayÕs, 2012, KONYA.
Projelerde YaptÕ÷Õ Görevler :
Proje BaúlÕ÷Õ: “Küre ve Küreler EtrafÕnda Oluúan Daimi Olmayan AkÕú YapÕsÕ ve Kontrolünün PIV Yöntemiyle øncelenmesi”, Proje No:109R028 (TÜBøTAK 1001 Projesi), 2010-Devam ediyor, Projedeki görevi: Proje Bursiyeri, Bütçe: 185600 TL. Proje BaúlÕ÷Õ: Silindir EtrafÕndaki AkÕú YapÕsÕ ve Kontrolünün ParçacÕk Görüntüleme Yöntemiyle Deneysel øncelenmesi, Yürütücü: Doç.Dr. Muammer Özgören, AraútÕrmacÕlar: Arú.Gör. Muharrem Hilmi Aksoy ve Arú.Gör. Sercan Do÷an, Selçuk Üniversitesi Bilimsel AraútÕrma Projesi, Proje No: 11401059, 2011-devam ediyor, Bütçe: 27000 TL.
Proje BaúlÕ÷Õ: SÕ÷ / Derin Suya Yerleútirilmiú FarklÕ Geometriler EtrafÕnda Oluúan AkÕú Karakteristiklerinin ParçacÕk Görüntülemeli AkÕú Ölçüm (piv) Yöntemiyle øncelenmesi, Yürütücü: Doç.Dr. Muammer Özgören, AraútÕrmacÕlar: Arú.Gör. Muharrem Hilmi Aksoy,Arú.Gör. Sercan Do÷an, Selçuk Üniversitesi Bilimsel AraútÕrma Projesi, Proje No: 11401058, 2011-devam ediyor, Bütçe: 27000 TL.
Proje BaúlÕ÷Õ: FarklÕ Geometrili Kompakt IsÕ De÷iútiricilerin Performans
Karakteristiklerinin AraútÕrÕlmasÕ, Yürütücü: Yrd.Doç.Dr. Selçuk DARICI AraútÕrmacÕ Doç.Dr. Muammer Özgören, Arú.Gör. Eyüp CANLI, Arú.Gör. Sercan DOöAN,