Combined septum and chamfer fins on threated stretching surface under the influence of nanofluid and the magnetic parameters for rotary seals in computer hardware

Abstract

In this paper, variation of temperature and velocity in the x-direction and the angular velocity of the nanofluids flow through triangular and rectangular and chamfer fins are investigated in the existence of a uniform magnetic field. The innovation of this paper is to investigate parameters of Mwcnt and TiO2 nanofluids passing from the different fins and blades on the stretching surface and compare their results together. Also by using FlexPDE and Design software, we were able to show all temperature and angular velocity counters in the form of diagrams and 3D images. The finite Element Method is selected for solving governing equations. The second part of the description relates to the use RSM method in the Design-Expert software. In this paper by using the RSM method, optimized the nanofluid velocity and heat transfer passing from the stretching sheet. Based on the results obtained from the angular velocity graphs and the heat transfer cantors in the Design-Expert software, the best optimization occurred for nanofluid velocity and nanofluid temperature, and angular velocity with u = 1.19 and T = 21.15 and N = 117.28. By comparison between the passing of MWCNT and TiO2 nanofluids flow on the different fins and blades, the results show that the temperature of MWCNT nanofluid around the fins has a greater value than the TiO2 nanofluids. The maximum heat transfer and temperature occurs near the rectangular fins for TiO2, and is 0.14% bigger than triangular and chamfer fins.

Keywords

• Angular velocity
• Finite element method
• Nanofluid effects
• Septum fins
• Thread stretching sheet