• Title of article

    Examination of Efects of Multi-Walled Carbon Nanotubes on Rheological Behavior of Engine Oil (10W40)

  • Author/Authors

    Wongwises Somchai نويسنده , Hemmat Esfe Mohammad نويسنده Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Isfahan, Iran , Rostamian Seyed Hadi نويسنده Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Isfahan, Iran , Afrand Masoud نويسنده Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

  • Pages
    7
  • From page
    257
  • Abstract
    در اين مطالعه، به اثرات نانولوله چند ديواره كربني و درجه حرارت بر رفتار ريولوژيك روغن موتور (10W40) پرداخته شده است. براي اين منظور، آزمايش در محدوده دماي 55-5 درجه سانتي گراد براي چند سوسپانسسيون مختلف با كسر حجمي جامد 0.025? ، 0.05? ، 0.1? ، 0.25? ، 0.5? و 0.75? انجام شد. ويسكوزيته تمام نمونه ها در محدوده نرخ برشي 666s-1-13333 S-1 براي تمام درجه حرارت مورد بررسي اندازه گيري شد. اندازه گيري ويسكوزيته در نرخ برشي مختلف نشان داد كه تمام نمونه نانوسيال رفتار غير نيوتني را نشان داد. نتايج همچنين نشان داد كه با افزايش كسر حجمي جامد 0-0.75?، ويسكوزيته هم افزايش تا 2.5 برابري نشان مي دهد. واژگان كليدي: نانوسيال غير نيوتوني، روغن موتور، نانولوله كربني چند ديواره، مطالعات آزمايشگاهي
  • Abstract
    In this study, efects of multi walled carbon nanotubes and temperature on rheological behavior of engine oil (10W40) have been examined. For this purpose, the experiments were carried out in the temperature range of 5-55°C for several suspensions with solid volume fractions of 0.025%, 0.05%, 0.1%, 0.25%, 0.5% and 0.75%. Te viscosity of all samples was measured in the shear rate range of 666s-1 to 13333 s-1 at all temperatures considered. Te viscosity measurements at diferent shear rates revealed that all nanofuid samples showed non-Newtonian behavior. Te results also revealed that for an increase in the solid volume fraction from 0 to 0.75%, the viscosity increases to 2.5 times. Te consistency and the power law index were attained by curve-ftting method for all samples and temperatures. Furthermore, the curve-ftting results revealed that the consistency index and apparent viscosity of nanofuid increases with augmenting the solid volume fraction and diminishes with growing temperature.
  • Journal title
    Astroparticle Physics
  • Serial Year
    2016
  • Record number

    2407735