Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Impingement Cooling Experimental Investigation Using Different Heating Elements
Impingement Jet Cooling in Gas Turbines
Author: R.S. AmanoPublisher: WIT Press
ISBN: 1845649060
Category : Science
Languages : en
Pages : 253
Book Description
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.
Experimental Investigation of Impingement Cooling with Turbulators Or Surface Enlarging Elements
Author: An Experimental Investigation of Liquid Jet Impingement Heat Transfer Theories
Author: James Stewart LombaraPublisher:
ISBN:
Category :
Languages : en
Pages : 164
Book Description
Investigation of Forced-convection Nucleate Boiling of Water for Nozzle Cooling at Very High Heat Fluxes
Author: John W. SchaeferPublisher:
ISBN:
Category : Heat flux
Languages : en
Pages : 52
Book Description
Detailed Investigation on Heat Transfer and Fluid Interaction Over Non-uniform Roughened Surfaces in Jet Impingement Cooling Applications
Author: Andres CurbeloPublisher:
ISBN:
Category :
Languages : en
Pages : 200
Book Description
The current research study investigated heat transfer and fluid behavior using non-intrusive experimental methods. Temperature-sensitive paint (TSP) was utilized to obtain scalar temperature field over smooth and rough surfaces. These experimental results will be compared with available literature. The flow physics was investigated by performing stereoscopic Particle Image Velocimetry. The velocity fields were further analyzed using Proper Orthogonal Decomposition (POD) and tested versus the wall similarity theory. High-accuracy microphones were utilized to obtain unsteady pressure values at different rough surfaces.
Experimental Investigation of an Air Micro-jet Array Impingement Cooling Device
Author: J. E. LelandExperimental and Analytical Study on Two-phase Impingement Cooling with and Without Electric Field
Author: Xin FengPublisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages :
Book Description
Among the thermal management solutions for power electronics, two-phase jet or spray impingement cooling are two promising candidates. In this study, electrohydrodynamic atomization (EHDA) method is used to generate spray and jet from the same capillary. This approach enables us to compare the heat transfer coefficient and critical heat flux (CHF) in consistent conditions. Two nondimensional parameters are first developed to lay out the various EHDA modes of ethanol. The experimental results show that the EHDA cooling could enhance the heat transfer coefficient in most conditions, while it could not benefit CHF because the electric repulsive force causes a wide spray angle and less impinging mass flux on the surface. Single and multi micro jet impingement cooling (MJIC) are investigated. Based on the experimental observation and analytical works, a semi-theoretical CHF correlation is proposed based on force and energy balance. The experimental data of water and ethanol are predicted very well by the new model. It also shows the potential to explain the unique feature on the CHF curves of saturated HFE7000 and subcooled ethanol. By using multi MJIC, heat transfer coefficient and CHF might be improved, which mainly depend on fluids and testing conditions.
Advances in Heat Transfer Augmentation Techniques in Single-Phase Flows
Author: Varun GoelPublisher: CRC Press
ISBN: 1003829589
Category : Technology & Engineering
Languages : en
Pages : 309
Book Description
Augmentation of heat transfer is important in energy conservation and developing sustainable energy systems. This book provides the science necessary to understand the basics of heat transfer augmentation in single-phase engineering systems. It considers theory and practice including computational and experimental procedures, evaluation techniques for performance, and new trends. Several applications of augmentation methods like surface modification, introduction of vortex flow and impinging jets, opportunities of ultrasound and magnetic fields, pulsatile flows, heat exchangers, and nanofluids are provided. Details of basic phenomena and mechanisms are highlighted. Key features: Provides the fundamental science needed to understand and further develop heat transfer augmentation for future energy systems Give examples of how ultrasound and magnetic fields, vortex flow, impinging jets, surface modification and nanofluids can augment heat transfer Considers basic issues of computational and experimental methods for analysis, design, and evaluation of efficient and sustainable heat transfer It is an ideal reference text for graduate students and academic researchers working in the fields of mechanical, aerospace, industrial, manufacturing, and chemical engineering.
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