MHD nanofluid flow past a rotating disk with thermal radiation in the presence of aluminum and titanium alloy nanoparticles
Aluminum; Heat source; Joule heating; MHD; Nanofluid; Rotating disk; Thermal radiation; Titanium alloy nanoparticles
The effects of thermal and exponential space dependent heat sources (THS and ESHS) on magneto-nanoliquid flow across a rotating disk with uniform stretching rate along radial direction are scrutinized in this communication. H2O based nanoliquids containing aluminium (AA 7075) and titanium (Ti6Al4V) alloy nanoparticles are considered. The AA7075 is made up of 90% Al, 5-6% Zn, 2-3% Mg, 1-2% Cu with additives such as Fe, Mn and Si etc. The flow is driven due to rotating disk with uniform stretching of the disk. Impacts of Joule and viscous heating are also deployed. The multidegree ordinary differential equations are formed via Von Karman transformations. The obtained non-linear BVP is solved by Runge-Kutta-Fehlberg based shooting approach (RKFS). Graphical illustrations depict the impacts of influential parameters on flow fields. The skin friction and Nusselt number are also calculated. Results pointed out that the thermal boundary layer growth stabilizes due to the influence of ESHS aspect. Velocities of AA7075 H2O nanofluid are superior than that of Ti6 Al4V H2O nanoliquid. Furthermore, the thermal performance of base liquid is outstanding when we added titanium alloy nanoparticles in comparison with aluminium alloy nanoparticles. 2018 Trans Tech Publications, Switzerland.
Makinde O.D.; Mahanthesh B.; Gireesha B.J.; Shashikumar N.S.; Monaledi R.L.; Tshehla M.S.
Defect and Diffusion Forum, Vol-384, pp. 69-79.
https://doi.org/10.4028/www.scientific.net/DDF.384.69 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046879140&doi=10.4028%2fwww.scientific.net%2fDDF.384.69&partnerID=40&md5=06515656c1e65a57a0c0587ce75919cf
Makinde O.D., Faculty of Military Science, Stellenbosch University, Private Bag X2, Saldaaha, 7395, South Africa; Mahanthesh B., Department of Mathematics, Christ University, Bangalore, 560029, India, Department of Studies and Research in Mathematics, Kuvempu University, Shankaraghatta 577451, Shimoga, Karnataka, India; Gireesha B.J., Department of Studies and Research in Mathematics, Kuvempu University, Shankaraghatta 577451, Shimoga, Karnataka, India; Shashikumar N.S., Department of Studies and Research in Mathematics, Kuvempu University, Shankaraghatta 577451, Shimoga, Karnataka, India; Monaledi R.L., Faculty of Military Science, Stellenbosch University, Private Bag X2, Saldaaha, 7395, South Africa; Tshehla M.S., Faculty of Military Science, Stellenbosch University, Private Bag X2, Saldaaha, 7395, South Africa