Download or read book Heat Transfer from Enhanced Surfaces in Air Jet Impingement and Suction written by Luis A. Brignoni and published by . This book was released on 1999 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Single phase and Flow Boiling Heat Transfer of Jet Impingement on Smooth and Enhanced Micro Structured Surfaces written by Sidy Ndao and published by . This book was released on 2010 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Enhancement of Jet Impingement Heat Transfer Using Shape Modification and Phase Change written by Yacob Mesfin Argaw and published by . This book was released on 2010 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seeks to enhance heat transfer rate performance on high heat flux surfaces while maintaining a uniform and low temperature of the substrate. Determines shapes which maximize heat transport from heater surfaces when using jet impingement cooling method and models a two-phase jet impingement process which incorporates phase change at the impingement substrate.

Download or read book Impingement Jet Cooling in Gas Turbines written by R.S. Amano and published by WIT Press. This book was released on 2014-05-28 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the requirement for enhanced cooling technologies on modern gas turbine engines, advanced research and development has had to take place in field of thermal engineering. Among the gas turbine cooling technologies, impingement jet cooling is one of the most effective in terms of cooling effectiveness, manufacturability and cost. The chapters contained in this book describe research on state-of-the-art and advanced cooling technologies that have been developed, or that are being researched, with a variety of approaches from theoretical, experimental, and CFD studies. The authors of the chapters have been selected from some of the most active researchers and scientists on the subject. This is the first to book published on the topics of gas turbines and heat transfer to focus on impingement cooling alone.

Download or read book Enhancement of Air Jet Impingement Heat Transfer Using Pin Fin Heat Sinks written by Hani Ali El-Sheikh and published by . This book was released on 1999 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heat Transfer from an Enhanced Surface Subject to Impinging Jets and Parallel Flow written by Gregory Alexander Failla and published by . This book was released on 1994 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heat Transfer from an Enhanced Surface Subject to Non circular Impinging Jets with Cross Flow written by Jamison William Janawitz and published by . This book was released on 1998 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Impingement Heat Transfer Between Air Jets and Modified Surfaces written by Leland G. Hansen and published by . This book was released on 1992 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Heat Transfer from Normally Impinging Two dimensional Air Jets written by Donald Gene Arganbright and published by . This book was released on 1971 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Enhanced Impingement Heat Transfer Using a Self Oscillating Jet Impingement Nozzle Array written by Michael Mincen Heatly and published by . This book was released on 1995 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heat Transfer in an Air Jet Impingement Oven written by Sushil Eapen and published by . This book was released on 1991 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heat Transfer Analysis of Slot Jet Impingement Onto Roughened Surfaces written by Rashid Ali Alshatti and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of surface roughness on jet impingement heat transfer was investigated in this research. A numerical analysis was conducted for free surface slot jet impinging normally onto a heated plate. Six different geometries and three different plate materials were investigated. The cooling fluid used for the analysis was water, and the flow was laminar with a range of Reynolds number (Re) from 500 to 1000. Temperature distribution, local and average heat transfer coefficient, and local and average Nusselt number were presented for each case. The steady state heat transfer results show that the increase in Reynolds number (Re) increases the local heat transfer coefficient and the local Nusselt number. Impinging the jet nozzle directly onto a step has a better heat transfer enhancement than impinging the jet nozzle in between steps. Materials with low thermal conductivity exhibit large variation in temperature along the solid-fluid interface. The variations of the interface temperature become smaller between all cases when applying the isothermal boundary condition. The transient heat transfer results show that the temperature of the interface increases with time until steady state condition is met. Materials with high thermal diffusivity reach the steady state condition with less time. The increase in surface roughness increases the time required to reach the steady state condition. The highest rates of heat transfer were found at locations where no fluid recirculation occurs. It takes less time to reach steady state condition when applying the isothermal boundary condition at the bottom surface of the plate.

Download or read book Jet Impingement Heat Transfer from Superheated Superhydrophobic Surfaces written by David Jacob Butterfield and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second study compares jet impingement heat transfer from SH surfaces of varying microstructures. Similar thermal effects due to modified jet ReD and initial surface temperature were observed. Modifying geometric pattern from microposts to microholes, altering cavity fraction, and changing feature pitch and width had little impact on heat transfer. However, reducing feature height on the post surfaces facilitated water penetration within the microstructure, slightly enhancing thermal transport.

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 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 Surface Heat Transfer by Jet Impingement at Low Reynolds Numbers written by Peter Kjær and published by . This book was released on 1992 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: