Heat transfer and fluid flow inside duct with using fan-shape ribs

Author:

Hashim Yousif

Abstract

A 2-D computational analysis is carried out to calculate heat transfer and friction factor for laminar flow through rectangular duct with using fan-shape ribs as a turbulator. The types of rib shapes are imported on the heat transfer rate and fluid flow in heat exchangers. The present study makes use of a fan-shaped ribs with two arrangements. The first arrangement was downstream fan-shape ribs (case 1) and upstream fan-shape ribs (case 2) is investigated. A commercial finite volume package ANSYS FLUENT 16.1 are used for solving the meshing process with continuity, momentum and energy equations respectively to investigate fluid flow and heat transfer across the ribs surface. The Reynolds number (Re) range of (400 - 2250) with different relative roughness pitch (p/H=0.17, 0.22, 0.27 and 0.32) at constant rib high (e/H). The results show that the heat transfers and friction increase with using ribs also, the results show that heat transfer is directly proportional to pitch ratio and Reynolds number. The Nusselt number enhancement by (12% -29%).

Publisher

Centre for Evaluation in Education and Science (CEON/CEES)

Subject

Mechanical Engineering,General Engineering,Safety, Risk, Reliability and Quality,Transportation,Renewable Energy, Sustainability and the Environment,Civil and Structural Engineering

Reference21 articles.

1. A. Bhislek Kumar, M. Ayank Kumar Dwivedi, (2019). Determination of heat transfer coefficient and friction factors for turbulent flow through rectangular ducts with triangular ribs, International journal of scientific research and engineering development, 2 (3), 521-525;

2. Nabeel A. Ghyadh, (2015). Enhancement of heat transfer for air flow through a duct with various ribs, International journal of mechanical and production engineering research and development.5(5), 71-79;

3. Arjumand Rasool and Adnan Qayoun,(2018). Nemerical analysis of heat transfer and friction factor in two pass channels with variable rib shapes, International journal of heat and technology, 36(1),40-48;

4. A Poulemtafes-Boukadoum and A. Benzaoui (2014). CFD based analysis of heat transfer enhancement in solar air heater provided with transverse rectangular ribs Energy Procedia (50) 761-772;

5. Mr. Sandeep Kumar Karol, and Mr. Ishwar Singh, (2015). CFD based comparative analysis of different ribs with varying and same height in rectangular duct, International journal of science technology and engineering, 1 (10),6-15;

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