Thermal Performance Analysis of A Circular Tube Using Vortex Rings at Various Angle and Pitch Ratio
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2014, Vol 2, Issue 8
Abstract
The influence of inclined vortex rings (VR) on heat transfer augmentation in a uniform heat-fluxed tube has been investigated experimentally. In the present work, thevortex rings were mounted repeatedly in the tube with various angle (250,300,350) and geometry parameters of the VR, three relative pitch ratios (PR = P/D = 2, 1 and 0.5) and at constant relative ring blockage ratios (BR = b/D = 0.2). Air was employed as the test fluid in the tube for the Reynolds number from 12000 to 24,500. The aim at using the VRs is to create counter-rotating vortices inside the tube to help increase the turbulence intensity as well as to convey the colder fluid from the core regime to the heated-wall region. The experimental results show a significant effect of the presence of the VRs on the heat transfer and pressure loss over the smooth tube. The larger BR value provides higher heat transfer and pressure loss than the smaller. The Nusselt number is maximum for vortex ring angle 350, but due to the large increase in the friction factor, thermal performance decreases. However, the VR at BR = 0.2 and PR = 0.5 with 300 yields the best thermal performance.
Authors and Affiliations
Eknath. Kurhe, Sameer Bhosale
Keywords
Related Articles
- EP ID EP18596
- DOI -
- Views 983
- Downloads 33
Survey on Client SSD and Enterprise SSD Performance
In current Storage system, NAND flash memory based Solid State Disk (SSD) is starting to replace hard disk drive (HDD) in desktop systems. Integrating SSD into enterprise storage systems, however, is much more challengi...
Design and Development of Water Distillation & Desalination Plant
As per our observations many villages and communities are facing severe water shortage in the country. There is a scarcity of clean water for drinking as well as agricultural purpose. Our project is aimed at finding a c...
slugModeling and Design of MEMS Accelerometer to detect vibrations on chest wall
A slight vibration is felt when a hand is placed on the chest. The vibration has great information as sounds, functions of heart and lung motion. The screening of heart disease can be carried out by listening to hear...
Review of Lucene Indexing Algorithm on Public Cloud
In today’s world users are generating huge amount of data therefore they have to outsource it to the public cloud. Cloud server is not trusted; data security is the main concern for data owners. To preserve the privacy...
SWIPER: Synchronization of Virtual Machine for Consistent Signaling Rate
Internet is a universal network connects many electronic devices. Even to connect a single system in the switched network, router configuration is necessary. Using Virtual machine, multiple processes can run on a single...