Download or read book Heat Transfer Investigation of Jet Impingement Coupled with Dimples written by Kanokjaruvijit (Koonlaya) and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Fundamental Investigation of Jet Impingement Heat Transfer written by Frederick F. Cadek and published by . This book was released on 1968 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of Dimples as Applied to Heat Transfer to Internal Passage written by Mauro Martyres de Oliveira and published by . This book was released on 2002 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Mechanical Engineering written by B. B. Biswal and published by Springer Nature. This book was released on 2020-01-16 with total page 1688 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select proceedings of the International Conference on Recent Innovations and Developments in Mechanical Engineering (IC-RIDME 2018). The book contains peer reviewed articles covering thematic areas such as fluid mechanics, renewable energy, materials and manufacturing, thermal engineering, vibration and acoustics, experimental aerodynamics, turbo machinery, and robotics and mechatronics. Algorithms and methodologies of real-time problems are described in this book. The contents of this book will be useful for both academics and industry professionals.
Download or read book Experimental Investigation of Jet Impingement Heat Transfer Using Thermochromic Liquid Crystals written by Brian Paul Dempsey and published by . This book was released on 1997 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiple Jet Impingement Heat Transfer Characteristic written by and published by . This book was released on 1980 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of Liquid Jet Impingement Heat Transfer Theories written by James Stewart Lombara and published by . This book was released on 1990 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigation of Flow Interactions and Heat Transfer Characteristics for Single Jet Impingement on Rotating Disks written by Lee Dwight Grochowsky and published by . This book was released on 1975 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Transfer and Correlations of Jet Array Impingement with Flat and Pimple dimpled Plate written by Husam Zawati and published by . This book was released on 2020 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physical mechanisms that cause the change in heat transfer, normalized by Nusselt number, when comparing both configurations are discussed in two regions: impingement and crossflow.
Download or read book Experimental and Numerical Investigation of Heat and Mass Transfer Due to Pulse Combustor Jet Impingement written by Michael J. Psimas and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Under certain circumstances pulse combustors have been shown to improve both heat transfer and drying rate when compared to steady flow impingement. Despite this potential, there have been few investigations into the use of pulse combustor driven impingement jets for industrial drying applications. The research presented here utilized experimental and numerical techniques to study the heat transfer characteristics of these types of oscillating jets when impinging on solid surfaces and the heat and mass transfer when drying porous media. The numerical methods were extensively validated using laboratory heat flux and drying data, as well as correlations from literature. As a result, the numerical techniques and methods that were developed and employed in this work were found to be well suited for the current application. It was found that the pulsating flows yielded elevated heat and mass transfer compared to similar steady flow jets. However, the numerical simulations were used to analyze not just the heat flux or drying, but also the details of the fluid flow in the impingement zone that resulted in said heat and mass transport. It was found that the key mechanisms of the enhanced transfer were the vortices produced by the oscillating flow. The characteristics of these vortices such as the size, strength, location, duration, and temperature, determined the extent of the improvement. The effects of five parameters were studied: the velocity amplitude ratio, oscillation frequency, the time-averaged bulk fluid velocity at the tailpipe exit, the hydraulic diameter of the tailpipe, and the impingement surface velocity. Analysis of the resulting fluid flow revealed three distinct flow types as characterized by the vortices in the impingement zone, each with unique heat transfer characteristics. These flow types were: a single strong vortex that dissipated before the start of the next oscillation cycle, a single persistent vortex that remained relatively strong at the end of the cycle, and a strong primary vortex coupled with a short-lived, weaker secondary vortex. It was found that the range over which each flow type was observed could be classified into distinct flow regimes. The secondary vortex and persistent vortex regimes were found to enhance heat transfer. Subsequently, transition criteria dividing these regimes were formed based on dimensionless parameters. The critical dimensionless parameters appeared to be the Strouhal number, a modified Strouhal number, the Reynolds number, the velocity amplitude ratio, and the H/Dh ratio. Further study would be required to determine if these parameters offer similar significance for other configurations.
Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 2006 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Transfer and Discharge Coefficient Effects of Jet Impingement on a Surface with Hemispherical and Teardrop Shaped Bumps written by Steven A. McKanas and published by . This book was released on 2016 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jet impingement is among the most effective methods of enhancing heat transfer in practical applications, enabling high heat transfer coefficients without the high pressure losses associated with flow through turbulated channels. The gas turbine industry is interested in combining jet impingement with dimpled and bumped plates as a method of improving heat transfer, enabling greater efficiency. This study investigates the average effects on heat transfer and discharge coefficients (Cd) created by arrays of jets impinging on target surfaces with hemispherical or teardrop shaped bumps using heated copper plates with embedded thermocouples. Reynolds number (Re) ranged from 5000 to 20,000 and 5000 to 26,000 for heat transfer and Cd tests, respectively, for all configurations. The jet pitch-to-diameter ratio x/d ranged between 3.3 and 12 and the jet exit-to-target-plate spacing ratio (z/d) ranged from 2 to 5 for all configurations. Additional Re and z/d values were tested for various configurations in order to fully quantify trends. The effects of spent air discharging in multiple directions was also analyzed. Depending on configuration, impinging on the bumped plates produced minor increases, no change, or a reduction in heat transfer compared to the baseline smooth plate depending on configuration. However, when accounting for the increase in surface area associated with the bumped plates, heat transfer was universally improved. Heat transfer was found to be quadratically related to Re and z/d and exponentially related to x/d. Spent air flow had minimal effect on heat transfer except for the x/d=12 configuration. Discharge coefficients were found to be either unaffected or only marginally affected by plate geometry. Cd was found to be independent of z/d for z/d greater than or equal to 2. Although Re and x/d have an effect on Cd, there is no clear relationship between these parameters. Overall, a jet array with x/d=6.6 and z/d=5 impinging directly on every other bump of the hemispherical target plate produced the greatest improvement in heat transfer over the baseline smooth plate, but at the expense of slightly lower Cd values. Overall, jet impingement on bumped surfaces provides an improvement in heat transfer with a small decrease in Cd.
Download or read book Jet Impingement Heat Transfer Over Rotating Surfaces written by Pratik Santosh Bhansali and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of the Flow Field and Associated Heat Transfer Within an Asymmetrical Leading Edge Jet Impingement Array written by Jorge S. Torres and published by . This book was released on 2019 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two different geometries, varied by H/d, were investigated at various Reynolds numbers ranging from 20,000 to 80,000. The geometry consisted of an array of 9 identical jets impinging on a leading edge of diameter D/d = 2, with an asymmetrical sidewall configuration to better represent the pressure side (PS) and suction side (SS) of a turbine blade.
Download or read book The Effect of Entrainment on Jet Impingement Heat Transfer written by Steven A. Striegl and published by . This book was released on 1982 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Papers from PRES 2018 written by Jiří Jaromír Klemeš and published by MDPI. This book was released on 2020-06-17 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: The depletion of natural energy resources provides evidential adverse impacts on world economy functionality. The strong requirement of a sustainable energy supply has escalated intensive research and the discovery of cleaner energy sources, as well as efficient energy management practices. In the context of a circular economy, this research not only targets the optimisation of resources utilisation at different stages but also emphasises the eco-design of products to extend production life spans. Based on this concept, this book discusses the roles of process integration approaches, renewable energy sources utilisation and design modifications in addressing the process energy and exergy efficiency improvement. The primary focus is to enhance the economic and environmental performance through process analysis, modelling and optimisation. The articles mainly show the contribution of each aspect: (a) design and numerical study for innovative energy-efficient technologies, (b) process integration—heat and power, (c) process energy efficiency or emission analysis, and (d) optimisation of renewable energy resources’ supply chain. The articles are based on the latest contribution of this journal’s Special Issues in the 21st conference entitled “Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction (PRES)”. This book is complemented with an editorial review to highlight the broader state-of-the-art development.
Download or read book Investigations of Dimples as Applied to Heat Transfer in an Internal Passage written by Mauro Martyres De Oliveira and published by . This book was released on 2002 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
