The impact of changing dynamic viscosity in combination with viscous dissipation on convective heat transfer in a fluid-filled rectangular cavity is studied using numerical simulations. At the top of the chamber, a heated horizontal plate is kept at temperature Tw and moves at a constant velocity Uw. Additionally, cold isothermal walls limit it on the left vertical and lower horizontal sides, whereas an adiabatic vertical wall limits it on the right. In the cavity, a quenching media was injected. The governing equations were transformed to non-dimensional form and solved using the C++ computer language's finite difference scheme numerical approach. The experiment was carried out on a variety of fluids, including oil with a Prandtl number of 10, air with a Prandtl number of 0.7, and liquid metal with a Prandtl number of 0.01, for a range of viscosities, parameters in the range 5*10-1 to 9*10-1, heat capacity in the range 1Cp10, fixed Eckert numbers, Ec = 1.0, and mixed convection parameter, Gr/Re2 = 1.0, Profiles are used to show the numerical results that have been generated. When the specific heat capacity and Prandtl number are greater than unity and the viscous dissipation is fixed, the results show that dynamic viscosity has a significant impact on velocity and temperature profiles. Furthermore, for Prandtl values greater than unity, raising the dynamic viscosity reduces the fluid's maximum velocity significantly. The findings will aid in the design of heat exchanger equipment and serve as a benchmark for industries such as wire drawing, continuous rolling, and glass fibre manufacture.
Author(S) Details
M. A. Waheed
Department of Mechanical Engineering, College of Engineering, University of Agriculture, P. M. B. 2240, Abeokuta, Nigeria.
E. O. Sangotayo
Department of Mechanical Engineering, Ladoke Akintola University of Technology, P. M. B. 4000, Ogbomoso, Nigeria.
View Book:- https://stm.bookpi.org/NPER-V6/article/view/5505
No comments:
Post a Comment