Thermal and Fluid Flow Performance Study of an Impinging Jet System Using Turbulators and Nanoparticles

Impinging jets have been applied extensively in a vast variety of practical applications where intense cooling, heating and drying rates are required. They are also prominent for their simple design and cost effectiveness and thus are an active subject of research. Their applications include, the an

Project Title

Thermal and Fluid Flow Performance Study of an Impinging Jet System Using Turbulators and Nanoparticles

Project Area of Specialization

Mechanical Engineering

Project Summary

Impinging jets have been applied extensively in a vast variety of practical applications where intense cooling, heating and drying rates are required. They are also prominent for their simple design and cost effectiveness and thus are an active subject of research. Their applications include, the annealing of plastic and metal sheets, the anti-icing of aircraft wings, freezing of tissue, food, cooling of gas turbine components, cooling of electronic components, etc. The performance of such devices can further be improved by using turbulators or by refining thermal properties of the impinging fluids for instance by the intrdocution of nanoparticles. Both methods will be the focus of current project.

Project Objectives

The usage of different surface enlargement elements (turbulators) and nanoparticles in the fluid jet impingement has a potential to significantly enhance the heat transfer performance. This research work will investigate variety of techniques and combinations of various settings and configurations to observe thermal performance enhancement in impinging jet systems, which will eventually help in the development of more compact, lighter and cost-effective heat transfer solutions.

The main objectives of the current project are:
- Investigation of heat transfer augmentation in an impinging jet system using different surface enlargement elements with and without nanoparticles.
- Investigation of fluid flow characteristics using different surface enlargement elements with and
without nanoparticles.
- Obtaining an optimum set of conditions leading towards the development of more compact, lighter and cost-effective heat transfer devices.
- Publication of high quality research papers.

Project Implementation Method

The numerical study of impinging jet systems requires High Powered Computational machines which are normally known as HPC Clusters. So, firstly an HPC Cluster with specifications suitable to perform numerical simulations of the impinging jet systems will be procured following SPPRA. Secondly, the equipment will be placed and tested after installing necessary software. Thirdly, numerical studies of heat transfer by impinging jet using different surface enlargements and nano-particles will be performed. Numerical simulations will be performed using Reynolds-averaged Navier–Stokes (RANS) method with different turbulence models available in open literature. The influence of different parameters e.g. physical dimensions of the surface enlargement element, jet Reynolds number, jet-outlet-to-target wall distance, particle volumetric concentration etc. will be investigated. The target surface subjected to a constant heat flux is cooled by an impinging jet. The numerical results will be validated with the published experimental data.

Benefits of the Project

The project beneficiaries and significance include:
- A step towards the development of an advanced research facility to numerically investigate different Thermo-fluids problems.
- The HPC equipment purchase in the project will increase the department computational facility helping to execute High Power Computational simulations studies.
- Having the HPC equipment in the department, different paid industrial projects can be taken and generate revenue for the Department and the University.
- Having the HPC equipment in the department, different national and international research projects can be taken and generate revenue for the Department and the University.
- The project finding will help in the design development of more compact, lighter and cheaper heat exchange equipment.
- The local industry and community of Pakistan would be benefitted with the project findings, as the efficient and compact devices have a potential to enhance energy conservation.

Technical Details of Final Deliverable

The final deliverable is a high quality research paper with aims to publish in a good iternational journal. The paper would aim to validate an existing experimental finding using numerical methods, specifically computational fluid dynamics using Fluent - Ansys. Geometry can be dealt with using several or any of the available CAD softwares or the integrated modeller in Fluent - Ansys, Design Modeller or Space Claim. Meshing can either be done with the mesher in Fluent or using ICEM CFD which is the better option among the two. Finally the solution can be run on Fluent and post-processing can be dealt with CFD Post. The overall findings, plots and comparable data to validate with the experimental results, will be compiled and documented in a research article and after validation will be sent for publication.

Final Deliverable of the Project

Software System

Core Industry

Energy

Other Industries

Core Technology

Clean Tech

Other Technologies

Sustainable Development Goals

Affordable and Clean Energy, Industry, Innovation and Infrastructure, Climate Action

Required Resources

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