Alsanğur, Rahime

Profile Picture
Profile URL
https://hdl.handle.net/20.500.14365/6696
Name Variants
Alsangur, Rahime
Alsangur, R.
Job Title
Email Address
rahime.alsangur@ieu.edu.tr
Main Affiliation
05.11. Mechatronics Engineering
Status
Current Staff
Website
ORCID ID
0000-0002-6446-4053
Scopus Author ID
57211352184
Turkish CoHE Profile ID
8101BF35CC622CAB
Google Scholar ID
c5qpiLsAAAAJ
WoS Researcher ID
IWM-5010-2023
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Rahime_Alsangur.jpg (14.27 KB)

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6

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78

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7

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76

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Scholarly Output

2

Articles

2

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7/0

Supervised MSc Theses

0

Supervised PhD Theses

0

WoS Citation Count

15

Scopus Citation Count

18

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0

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0

WoS Citations per Publication

7.50

Scopus Citations per Publication

9.00

Open Access Source

0

Supervised Theses

0

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Diamond and Related Materials1
Mechatronics1
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  • Thumbnail Image
    Article
    Citation - WoS: 11
    Citation - Scopus: 13
    Magnetic Field Dependent Thermal Conductivity Investigation of Water Based Fe3o4/Cnt and Fe3o4/Graphene Magnetic Hybrid Nanofluids Using a Helmholtz Coil System Setup
    (Elsevier Ltd, 2024-01) Alsanğur, Rahime; Doganay, S.; Ates, İ.; Turgut, A; Cetin, L.; Rebay, M.
    Magnetic hybrid nanofluids are making a name of themselves in mainstream application areas such as heat transfer, solar systems, acoustic applications, etc. These nanofluids are highly favorable as their ability to advance the properties of their constituent particles such as their thermophysical properties. This study aims to investigate the magnetic field dependent thermal conductivity of Fe3O4/CNT – water and Fe3O4/Graphene – water magnetic hybrid nanofluids. The thermal conductivity investigations are carried out with the 3ω method under a uniform magnetic field generated by a 3D Helmholtz coil system. Fe3O4/CNT – water and Fe3O4/Graphene – water magnetic hybrid nanofluids were purchased commercially as 20 wt% colloids. Then, the samples with 1, 2, 3, 4, and 5 wt% were prepared by diluting them with DI water. Thermal conductivity measurements were carried out for the samples under the external uniform magnetic field in the range of 0–250 G in both parallel and perpendicular directions to the temperature gradient generated by the thermal conductivity measurement probe. The results pointed out that the thermal conductivity of the samples increases as the magnetic field and particle concentration increase for both magnetic hybrid nanofluids. Additionally, it is obtained that the thermal conductivity enhancement of Fe3O4/Graphene – water is up to 3 times higher than Fe3O4/CNT – water samples. Moreover, the maximum thermal conductivity enhancement was observed as ∼12 % and ∼9 % for Fe3O4/CNT – water, and ∼51 % and ∼21 % Fe3O4/Graphene – water under external magnetic field application with parallel and perpendicular direction, respectively. © 2023 Elsevier B.V.
  • Thumbnail Image
    Article
    Citation - WoS: 4
    Citation - Scopus: 5
    3d Helmholtz Coil System Setup for Thermal Conductivity Measurements of Magnetic Nanofluids
    (Pergamon-Elsevier Science Ltd, 2023-10) Alsangur, Rahime; Dog, Serkan; Ateş, Ismet; Turgut, Alpaslan; Çetin, Levent; Doğanay, Serkan
    This study aims to design a mechatronic system that involves a 3D Helmholtz coil system implemented with the 3 omega; method to measure the thermal conductivity of magnetic nanofluids under uniform and rotating magnetic fields. For this purpose, a 3D Helmholtz coil system was designed and manufactured to generate a uniform and rotating magnetic field up to 400 G. First, the uniformity and rotation abilities of the magnetic field generated by the system were investigated numerically and experimentally. The investigations pointed out that the 3D Helmholtz coil system can generate a uniform magnetic field in 1D, 2D, and 3D with a maximum non-uniformity factor of 0.0016. After that, the thermal conductivity of Fe3O4 - water magnetic nanofluid samples with 1, 2, 3, 4, and 4.8 vol.% were measured under 1D, 2D, and 3D uniform magnetic field application. The magnetic field was applied at different direction angles between X, Y, and Z axes in the Cartesian coordinate system. The results pointed out that the thermal conductivity of the samples increases as the magnetic field and particle concentration increase. The maximum thermal conductivity enhancement was observed as similar to 9.1% and the minimum thermal conductivity was observed as similar to 1.9% when the magnetic field is applied in parallel and perpendicular directions, respectively. The measurement results also pointed out that under the external uniform magnetic field application at 2D and 3D, thermal conductivity enhancement is less affected by the particle concentration increment.