The study of heat transfer enhancement due to various nanofluids between rotating stretchable disks

被引：0
作者：
Mallikarjuna B. [1 ]
Hari Prasad P. [2 ]
Saravanakumar G. [1 ]
机构：
[1] BMS College of Engineering, VTU, Belagavi, Bangalore
[2] Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur
来源：
International Journal of Ambient Energy | 2022年 / 43卷 / 01期
关键词：
heat transfer enhancement; numerical method; rotating disks; stretchable parameters; Various nano fluids;
D O I：
10.1080/01430750.2022.2111350
中图分类号：
学科分类号：
摘要：
In this paper, the convective flow of various nanofluids (Cu, CuO, Al2O3, TiO2, Fe3O4) across rotating stretchable disks has been investigated theoretically. Stretchable disks are maintained with uniform constant angular velocities. The similarity transformations are used to non-dimensionalize the governing equations and then solved numerically. The computational results are depicted graphically and discussed for various physical parameter. It is worthy to mention the important observation in this investigation that higher temperature is taken place for Al2O3 or TiO2. The influence of Re, Prandtl number, stretching parameter and rotating parameter on radial, tangential and temperature profiles are presented with the assist of graphs. Increasing the values of (Formula presented.) leads to enhance Nusselt number (rate of heat transfer) and skin friction coefficient along both the disks. Skin friction coefficient remains constant for increasing values of Prandtl’s number where as Nusselt number increases at both disks. Tangential velocity and temperature profiles increases for increasing values of rotation parameter (Ω). Increasing stretchable disks parameter exhibits reverse trend behaviour on physical quantities at different disks. For higher values of (Formula presented.) radial velocity decreases up to (Formula presented.) = 0.5 and then increases. © 2022 Informa UK Limited, trading as Taylor & Francis Group.
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页码：8927 / 8935
页数：8
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