Numerical Study and Comparison of Heat and Mass Transfer Fluid Flow of Silver and Aluminum Oxide Nanofluid Past a Horizontally Plate | Chapter 8 | Research Updates in Mathematics and Computer Science Vol. 2

 This work analyses the behavior, characteristics, flow development, and heat and mass transfer coefficient of nanofluids under laminar boundary layer flow over a horizontally inclined plate. A nanofluid is the suspension of ultrafine particles in a base fluid, which tremendously enhances the heat transfer characteristics of the original fluid. This work aims to compare the characteristics between two different nanofluids Silver and Aluminum Oxide with the same base fluid water under the heat and mass transfer nanofluid past a horizontally inclined plate. The Basic governing equations of the free convective flow for heat and mass transfer are converted to a non-dimensional partial differential equation using non-dimensional parameters and are solved numerically using crank Nicolson Implicit finite difference method. The final equations are solved using the MATLAB software and the results are shown as graphs. The velocity, temperature and concentration profiles are illustrated graphically to study about the various parameters Grashof Number, Angle of inclination, Nano particle volume fraction, Schmidt number and non-uniform surface temperature.

Author(s) Details:

M. Selva Rani,
Department of Agricultural Economics, SRM College of Agricultural Sciences, SRM Institute of Science and Technology, Baburayanpettai, Mathuranthagam Taluk, Chengalpattu District – 603202, India.

Please see the link here: https://stm.bookpi.org/RUMCS-V2/article/view/13946

Assessment of Temperature and Nanoparticle Concentration on the Viscosity of Glycerine-water Based SiO2 Nanofluids | Chapter 4 | Research Developments in Science and Technology Vol. 7

 The dynamic viscosity of SiO2/22nm nanofluids created in a glycerine-water (30:70 by volume) mixed base liquid, referred to as GW70, was determined experimentally. At temperatures ranging from 20 to 80 degrees Celsius, nanofluids with concentrations of 0.2, 0.6, and 1.0 percent are generated, and viscosity measurements are taken with an LVDV-2T Brookfield Viscometer. The particle size and elemental composition of nanoparticles are determined using FESEM and EDX, while XRD images show the existence of SiO2 peaks in the crystalline structure. The rheology of nanofluids is affected by the concentration of nanoparticles. In the experimental temperature and concentration range, nanofluids behave Newtonian. The viscosity of nanofluids increased as particle concentration increased and reduced as temperature increased. At 20oC, the highest viscosity value is at 1.0 percent vol. concentration, whereas at 80oC, the lowest viscosity value is at 0.2 percent vol. concentration. The viscosity of the glycerine-water base fluid was also tested at 20, 40, 60, and 80 degrees Celsius. The viscosity ratio of all nanofluids to the base liquid is determined to be larger than one. This viscosity data may be used to determine the HTC of glycerine-water-based silica nanofluids.

Author(s) Details:

M. Mohammed Mohaideen,
Department of Aeronautical Engineering, Malla Reddy College of Engineering and Technology, Hyderabad-500100, India.

P. H. V. Sesha Talpa Sai,
Department of Mechanical Engineering, Malla Reddy College of Engineering and Technology, Hyderabad-500100, India.

M. L. R. Chaitanya Lahari,
Department of Mechanical Engineering, Malla Reddy College of Engineering and Technology, Hyderabad-500100, India.

Please see the link here: https://stm.bookpi.org/RDST-V7/article/view/7078

Thermal Performance of Nanofluids in a Flat Finned Tube Compact Heat Exchanger Using Efficiency and Effectiveness Method | Chapter 06 | Novel Perspectives of Engineering Research Vol. 6

 For problems involving heat exchangers, a new solution approach has recently been adopted. The Efficiency and Effectiveness Method is the name of this revolutionary procedure. It is comparatively simple in comparison to traditional approaches, and it does not require experimental settings, which are typically extensive and full of specificities that are often superfluous. The goal of this research is to use the Efficiency and Effectiveness Method to examine the thermal performance of a flat finned tube compact heat exchanger that uses nanoparticles as a refrigerant fluid. The heat exchanger in question is commonly found in radiators in automobiles. The issue at hand is determining and comparing the thermal performance of a finned flat-tube compact heat exchanger, which is commonly used in automotive radiators, utilising a set of nanoparticles. Nanoparticles have been found to improve the heat exchanger's performance. Nonetheless, the power and refrigerant fluid flow of the ventilation system are directly linked to the improvement. The refrigerant outlet temperature, air outlet temperature, and heat exchange process effectiveness are the primary quantities examined in this study. Metals and metal oxides are the most effective nanoparticles. Furthermore, the lower the volume fraction required to achieve optimal performance, the higher the ventilation system's power. The findings could lead to lower heat exchanger installation costs and the construction of a heat exchanger with fewer physical dimensions.

Author(S) Details

Élcio Nogueira
Department of Mechanic and Energy, State University of Rio de Janeiro, Brazil.

Hiago da Silva Rosa
Department of Mechanic and Energy, State University of Rio de Janeiro, Brazil.

View Book:- https://stm.bookpi.org/NPER-V6/article/view/5500