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Relevant bibliographies by topics / Magnetic nanofluid / Dissertations / Theses

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Dissertations / Theses on the topic 'Magnetic nanofluid'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Joubert, Johannes Christoffel. "Influence of a magnetic field on magnetic nanofluids for the purpose of enhancing natural convection heat transfer." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/61298.

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Natural convection as a heat transfer mechanism plays a major role in the functioning of many heat transfer devices, such as heat exchangers, energy storage, thermal management and solar collectors. All of these have a large impact on the generation of solar power. Considering how common these devices are not only in power generation cycles, but in a majority of other thermal uses it is clear that increased performance for natural convection heat transfer will have consequences of a high impact. As such, the purpose of this study is to experimentally study the natural convection heat trans

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2

Cherief, Wahid. "Etude des ferrofluides et de leurs applications à l'intensification des transferts de chaleur par convection forcée." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAT102/document.

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Cette thèse a pour objectif d’étudier les performances thermiques et rhéologiques des ferrofluides sous champ magnétique pour des applications de refroidissement. L’approche adoptée dans cette thèse est de nature macroscopique, et est basée sur plusieurs études expérimentales. Cette caractérisation des performances des ferrofluides est focalisée sur trois aspects : i) étude de la rhéologie ii) étude de la convection forcée iii) étude la conductivité thermique. Différents outils de caractérisation correspondant à chaque domaine d’étude ont été développés. Dans le domaine de la rhéologie, une ce

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3

Velínská, Kamila. "Využití nanofluidního směšování pro přípravu liposomálních nosičů značených gadoliniem pro kontrastní zobrazování magnetickou resonancí (MRI)." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-316164.

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This diploma thesis focuses on the preparation of the liposomes, containing lipids with gadolinium, which are used for a contrast magnetic resonance imaging. The liposomes were prepared by the lipid film hydration followed by an extrusion and also by a new nanofluid mixing method on the NanoAssemblr Benchtop. The preparation technology has been optimized for parameters such as the composition of lipids, the flow rate ratio and total flow rate. The method of modification of the liposomes surface by gadolinium complexes has been developed. This method is using a conjugation reaction between the

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4

Gonzalez, Lino A. (Lino Alberto) 1976. "Negative magnetophoresis of submicron species in magnetic nanofluids." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/46607.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2009.<br>Includes bibliographical references.<br>In this work we studied the focusing and trapping of submicron, nonmagnetic species immersed in a magnetic nanofluid under applied magnetic fields. Focusing was achieved using two pairs of permanent magnets, which forced submicron fluorescently-tagged polystyrene beads to focus in the region between the two magnet pairs. Size-based trapping was achieved using a microchip that produced spatially increasing magnetic field gradients that trapped flowing polystyre

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5

Fu, Rong. "An investigation of magnetic nanofluids for various thermal applications." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/45018/.

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Magnetic nanofluid (MNF) is one special kind of nanofluid which possesses both magnetic and fluid properties. Nowadays, extensive attention has been focussed on development of thermal applications. Investigations of magnetic hyperthermia are emerging as a new frontier in studies of cancer therapy. The theory of treatment is based on the fact that magnetic nanoparticles produce heat under an AC magnetic field via a mechanism called magnetic losses. Facing with the present technical limits and growing demands for safe treatment, researchers have realized the advantage of assembling superparamagn

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6

Gravel, Olivier. "The emergence of liquid mixing from spinning magnetic nanoparticules in rotating magnetic fields : visualisation and characterisation towards a better understanding of the underlying phenomena." Master's thesis, Université Laval, 2014. http://hdl.handle.net/20.500.11794/25246.

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Ce travail vise à approfondir l’utilisation de nanoparticules magnétiques (NPM) en suspensions colloïdales en tant qu’agitateurs nanométriques pouvant manipuler le mélange à l’échelle micrométrique lorsque soumis à des champs magnétiques. D’abord, les structures cohérentes émergeant de la rotation de NPM sont observées par microscopie et sont quantifiées à l’aide d’une analyse multi-résolution basée sur les transformées en ondelettes, démontrant l’effet significatif des paramètres étudiés sur la génération de structures cohérentes vorticales à l’intérieur du fluide. La séparation des agitateur

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7

Gari, Abdullatif Abdulhadi. "Analysis of conjugate heat transfer in tube-in-block heat exchangers for some engineering applications." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001716.

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8

Lo, Hsin-Min, and 羅新旻. "Investigation of Magnetic Field Effect on the Magnetic Nanofluid Oscillating Heat Pipe." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/76634887623287277208.

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碩士<br>淡江大學<br>機械與機電工程學系碩士班<br>103<br>The present research a pulsating heat pipe (PHP) was made of glass material with an inner and outer diameters of 3 mm and 6 mm for 50 % fill ratio was employed. The heat input was applied at 20, 60, 100, 140 and 180 W. Distilled Water and Fe3O4 nanofluid with different concentrations of 90 ppm were used as working fluid, and cooling water temperature was set at 25 °C. Experiment was conducted under no magnetic field and three different magnetic flux density (1415, 935 and 625 Gause). In order to investigate the effects of ferrofluid and magnetic field on th

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9

Wang, Yao-Chun, and 王耀羣. "Study of Magnetic Field Effect on the Magnetic Nanofluid Pulsating Heat Pipe Performance." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/dr2dgg.

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碩士<br>淡江大學<br>機械與機電工程學系碩士班<br>102<br>Abstract: The present research a pulsating heat pipe (PHP) is made of glass material with an inner and outer diameters of 3 mm and 6 mm for 70 % fill ratio was employed. The heat input was applied at 20, 55, 90, 125 and 160 W. Distilled Water and Fe3O4 nanofluid with different concentrations of 90, 270, 450ppm were used as working fluid, and cooling water temperature was set at 25 °C. Experiment was conducted under no magnetic field and three different magnetic fields that magnet located in the middle area of evaporator (Mid mag), both sides of evaporator (

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10

Liu, Chien-Ting, and 劉建廷. "Research on the vibration energy dissipation of magnetic nanofluid dampers." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/84277851545274957971.

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碩士<br>中原大學<br>機械工程研究所<br>101<br>Abstract This paper presents a study on the vibration energy dissipation analysis of magnetic nanofluid dampers. The main purpose is to investigates duct aspect ratio, particle volume fraction, and the magnetic field strength on forced motion, vibration frequency, and response time of magnetic nanofluid dampers. First, we complete the chemical preparation of water-based magnetic nanofluids, and determine the volume fraction of nanofluids. Then, we complete a damping test system design, and experimentally measure forced situation of the system. Finally, we us

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11

Chen, Wei-Fan, and 陳韋帆. "Analysis of magnetic nanofluid rheological properties and vibration energy dissipation." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/bgry99.

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碩士<br>中原大學<br>機械工程研究所<br>106<br>The study of magnetorheological fluids mainly consider microparticles to investigate the rheological properties of fluids. This thesis, however, considers fluids with magnetic nanoparticles (magnetic nanofluids) to conduct an analysis of their rheological properties and vibration energy dissipation. The purpose is to investigate the influences of external magnetic field and nanoparticle volume fraction on the rheological properties and damping energy dissipation of magnetic nanofluids. First, the chemical preparation of water-based magnetic nanofluids was comple

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12

JIANG, ZHI-HAN, and 姜智瀚. "Natural Convection of Nanofluid in a Square Enclosure with Partitions in the Presence of the Magnetic Field." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/77699894997406464183.

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碩士<br>中華大學<br>機械工程學系<br>104<br>Two dimensional natural convection of water-Cu nanofluid in a square enclosure with partitions in the presence of the magnetic field is investigated using numerical simulation. The Boussinesq approximation is used to simulate buoyancy force. The magnetic field is considered in the vertical direction to the fluid flow. The Brinkman and the Maxwell models are proposed to modify the viscosity and heat transfer coefficient of water-Cu nanofluid. The Equation-based Modeling module in COMSOL software package is used to establish the continuity, momentum, and energy equ

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13

Yen, You-Hsuan, and 顏佑軒. "Experimental study on the viscosity of magnetic nanofluids." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/fqj256.

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碩士<br>國立臺灣大學<br>應用力學研究所<br>107<br>Viscosity of magnetic nanofluid with Fe3O4 particles was studied experimentally using a modified Brookfield viscometer (based on circular Couette flow), with its cylindrical test section enclosed by an electric coil for generating the magnetic field through the application of an applied current. The test section together with the coil were immersed in a circulating water tank for removing the heat due to Joule heating, such that the test fluid was kept at a constant temperature during the experiment. Both the modified viscometer and the cooling system were dev

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14

Chen, Xin-Guan, and 陳心冠. "Study on the magnetic properties of magnetic nanofluids prepared by ultrasonic atomization." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/36350774935440672598.

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碩士<br>中原大學<br>機械工程研究所<br>105<br>This thesis presents a study on the preparation of magnetic nanofluids and the analysis of their material properties. The main purpose is to study the influence of ultrasonic atomization technique on the magnetic properties of magnetic nanofluids. First, the ultrasonic atomization technology is applied to the chemical co-precipitation method. The magnetic nanoparticles are synthesized by adjusting the oscillation frequency of piezoelectric ultrasonic microporous atomizer plate and the concentration of iron ions of atomized droplet. Then, the sol-gel method is us

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15

Zhang, Jun-Yu, and 張君輿. "Research on Pendant Drop Interfacial Properties of Magnetic Nanofluids." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/18942224144440938790.

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碩士<br>中原大學<br>機械工程研究所<br>100<br>This paper presents a study on the effects of particle size, particle volume fraction, particle magnetic interaction, and magnetic field gradient on pendant drop interfacial properties of magnetic nanofluids, including pendant drop profile and surface tension. The main purpose is to conduct an analysis of magnetic nanofluid interfacial properties under an applied magnetic field. First, we complete the preparation of water-based magnetic nanofluids. Then, considering the magnetic fluid drop in an applied magnetic field, we revise the Young-Laplace equation accord

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16

Chang, Ming-Hsuan, and 張銘軒. "Effect of magnetic field on the viscosity of nanofluids." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/72314836250890157451.

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碩士<br>國立臺灣大學<br>應用力學研究所<br>104<br>Nanofluid is a liquid (called base fluid) suspended uniformly and stably with nano particles. The thermal conductivity and viscosity of nanofluid could be substantially greater than that of the base fluid, because of the particle agglomeration according to the literature. Thus, it would be beneficial for the application if we could control the particle agglomeration via an external means, such as an applied magnetic or electric field, outside the fluidic system. Fe3O4-Engine oil nanofluid was prepared using the two-step method, together with the modification o

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17

Chu, Chin-Ying, and 朱峙穎. "Study on the influence of preparation parameters on the magnetic properties of magnetic nanofluids." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/t3s4re.

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碩士<br>中原大學<br>機械工程研究所<br>102<br>This thesis presents a study on the analysis of magnetic properties of fluids. The main purpose is to study the influence of preparation parameters on magnetic properties of magnetic nanofluids. First, we prepare magnetite nanoparticles by the co-precipitation method with different molarities and stirring speeds. Then, we coat a stabilizer layer on each nanoparticle by the sol-gel method with different pH values and working temperatures, so as to prepare stable water-based magnetic nanofluids. Also, through the co-axial-tube density meter, we then estimate the r

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18

Liu, Yu-En, and 劉宇恩. "Study of the viscosity of magnetic nanofluids via slit viscometer." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/jpqcnp.

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碩士<br>國立臺灣大學<br>應用力學研究所<br>107<br>The viscosity of magnetic nanofluid was studied experimentally using Fe3O4-VPO (vacuum pump oil) nanofluid in a slit viscometer. Magnetic nanocrystals of Fe3O4 were prepared by the co-precipitation method, whose size was measured as about 8 nm using the X-ray diffraction (XRD). The nano Fe3O4 particles were then coated with oleic acid, and dispersed in base fluid, for forming the nanofluid. The coated oleic acid was em-ployed for providing the steric force to counterbalance the van der Waals force between particles, ensuring the stability of nanofluid. Two bas

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19

Cheng, Cheng-Hung, and 鄭丞宏. "Study on the magnetic field effect on pool boiling heat transfer characteristics of magnetic nanofluids." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/72861063324071028529.

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碩士<br>中原大學<br>機械工程研究所<br>105<br>This study conducts a research of magnetic field effects on pool boiling heat transfer characteristics of magnetic nanofluids. The purpose is to investigate the influences of external magnetic field and particle concentration on the excess temperature of solid surface and the critical heat flux in the pool boiling heat transfer of magnetic nanofluids. First, water-based magnetite nanofluids are prepared by chemical coprecipitation method and sol-gel process. Further, boiling heat transfer test system is set up. The governing equation of the relationship between

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20

Hsu, Hsueh-Wen, and 許學文. "Research on the performance of loudspeaker voice coils using magnetic nanofluids." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/93886105122179224628.

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碩士<br>中原大學<br>機械工程研究所<br>101<br>This research conduct the analysis of the performance of loudspeaker voice coils using magnetic nanofluids. The main purpose is to investigate the influences of carrier liquid and particle volume fraction on the heat rejection, frequency response, and distortion of loudspeaker voice coils. First, we prepare water-based, kerosene-based, and silicone-oil-based magnetic nanofluid test samples of different solid-phase particle volume fractions. Then, we design a thermal conductivity meter and determine the values of the thermal conductivity for different samples thr

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21

Huang, Wen-Jie, and 黃文杰. "Research on the flow characteristics of magnetic nanofluids in a microtube." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/76444252526612698396.

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碩士<br>中原大學<br>機械工程研究所<br>101<br>This research conducts an analysis of flow characteristics of magnetic nanofluids in a microtube. The main purpose is to investigate the influences of microtube length (diameter), particle volume fraction, and the external magnetic field strength on the fluid velocity, pressure, pressure drop, and the flow drag. First, we complete the preparation of water-based magnetic ( ) nanofluids as well as the experimental measurements and theoretical approximations of their material properties. Further, we compare the experimental data and the theoretical results to verif

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22

Chen, Lu-Yu, and 陳律毓. "Study on the load capacity of hydrostatic bearings using magnetic nanofluids." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/wa96an.

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碩士<br>中原大學<br>機械工程研究所<br>102<br>This study conducts the analysis of the load capacity of hydrostatic bearings using magnetic nanofluids. The main purpose is to investigate the influences of particle volume fraction, external magnetic field strength, and particle interaction parameter on the hydrostatic bearing load using magnetic nanofluids. First, we prepare water-based magnetic-nanofluid lubricant test samples. Then, we design a hydrostatic bearing test system. Further, we measure the lubricant flow rate and the corresponding hydrostatic bearing load, so as to verify the validation of the ap

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23

Lo, Kuo-Jung, and 羅國榮. "Study on the convective heat transfer of magnetic nanofluids in a microtube." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/d9463k.

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碩士<br>中原大學<br>機械工程研究所<br>102<br>This thesis conducts an analysis of the flow and thermal fields and their corresponding characteristics of the magnetic nanofluids in a microtube. The main purpose is to investigate the influences of microtube length, particle volume fraction, and external magnetic field strength on the fluid velocity, temperature, pressure, pressure drop, flow drag, and heat transfer rate. First, we complete the preparation of water-based magnetite (Fe3O4) nanofluids and the determination of their material properties. Further, we apply mass, momentum, and energy conservation eq

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24

Liu, Jia-Rui, and 劉家瑞. "Study on the enhanced magnetic properties of water-based magnetic nanofluids prepared by ultrasonic-assisted chemical co-precipitation." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/42774242197153962120.

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碩士<br>中原大學<br>機械工程研究所<br>103<br>This thesis presents a study on the analysis of magnetic properties of water-based magnetic nanofluids. The main purpose is to study the enhancement of magnetic properties of water-based Fe3O4 magnetic nanofluids prepared by ultrasonic-assisted chemical co-precipitation method. First, magnetite nanoparticles (Fe3O4) are synthesized by chemical co-precipitation assisted by ultrasonic oscillation technology under different alkaline solution molarities, ultrasonic oscillation powers output, and ultrasonic oscillation intermittent times. Then, the sol-gel method is

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25

Zhang, Wen-Yu, and 張文昱. "Study on the permanent-magnetically-driven flow of magnetic nanofluids in a microtube." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/40501814241661060159.

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碩士<br>中原大學<br>機械工程研究所<br>104<br>This study conducts a research of permanent-magnetically-driven flow of magnetic nanofluids in a microtube. The main purpose is to investigate the influence of volume fraction of particles, magnetic field gradient, and magnetic disk rotational speed on the magnetic driving force in the microtube. First, water-based magnetite (Fe3O4) nanofluids are prepared, and experimental measurements of their material properties are made. Further, the theoretical formula of magnetic driving force is provided, and some experiments are done to verify the validation of the formu

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26

Chou, Shih-Kai, and 周士凱. "Experimental study of the effect of magnetic field on the viscosity of Fe3O4-nanofluids." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/9j3h6t.

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碩士<br>國立臺灣大學<br>應用力學研究所<br>106<br>Nanofluid is a liquid suspended uniformly and stably with nanoparticles. Its application in heat transfer enhancement was studied extensively for the past two decades, and the focus has been shifted recently to other applications. Both the thermal conductivity and viscosity of nanofluid can be increased significantly because of the particle agglomeration. The work of this thesis is to study experimentally the effect of an applied magnetic field on the viscosity of nanofluid, and investigate the possibility of manipulation of viscosity via the magnetic field. T

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27

Lin, Tsung-Hsing, and 林宗興. "Preparation of Magnetite Nanofluids in Water Phase by Wet Beads Milling." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/05755552911464560114.

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碩士<br>南台科技大學<br>化學工程與材枓工程系<br>98<br>With regard to the state-of-the-art of the chemical, paint- and printing inks industries, it becomes clear that further development of wet grinding technology is necessary in order to satisfy the requirements of the production of nanoparticles with specific functional properties in the future. This investigation deals with a comprehensive analysis of the dispersion behavior of magnetite(Fe3O4) powders in order to determine accurate conditions for mixing and grinding dense superparamagnetic nanofluids by the novel wet beads mill.During the grinding procedure,

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SU, HUNG TING, and 蘇宏庭. "Submerged Arc Nanoparticles Synthesis System(SANSS) Prepared Suspension of Magnetic Nanoparticles and Analyzed Nanofluids Properties." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/12282642026283095359.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>92<br>This study investigates the manufacture technique of magnetic nanoparticles. Pure Nickel is used to produce Ni nanoparticles in liquid to from ferrofluids. Discovery of the experiment, the smaller nanoparticles manufacturing parameters includes, vacuity pressure 30 Torr in the chamber. Power source current and voltage are 13.5 A and 220 V, respectively. The plus duration is 12 μs, and the temperature of dielectric liquid is 0 ℃. The average size of the obtained Ni nanoparticles is 20 nm. Experimental results that show the morphology of nanoparticle

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