... trend. Results are interpreted through the lens of CaO-MgO-Al 2 O 3 -SiO 2 eutectic chemistry, but the chemical pathways by which these eutectics come into existence is found to be of equal importance. gas turbine engines deposition and fouling impingement cooling CMAS chemistry AFRL02...

... Abstract Impingement cooling is an effective cooling structure in gas turbine blades, but the downstream heat transfer will be reduced seriously by crossflow. It has been proven that equipping a crossflow diverter in impingement channel can make jet free from crossflow and enhance...

... Abstract Impact cooling is an effective way to enhance heat transfer, especially in the gas turbine blades. In the leading edge of the blade where has the high heat load, jet impingement cooling is widely used due to its high heat transfer characteristic in stagnation region. The focus...

... transfer by 15.1% and 13.2% for non-chamfered and chamfered configurations respectively. equilaterally staggered jet impingement cooling LES flow visualization heat transfer HEAT TRANSFER AND FLOW VISUALIZATION OF EQUILATERALLY STAGGERED JET ARRANGEMENT ON A FLAT SURFACE Alankrita Singh...

... height can improve local heat transfer, continuing to increase mainly enlarge heat transfer area. The decent aerodynamic shape decreases the flow discharge coefficient by only 2% at the rib height of 0.3H. impingement cooling roughness element heat transfer flow discharge coefficient...

... Abstract Impingement cooling is a well-established technique to reduce the thermal load of hot gas components in gas turbines. Although the technique is widely used, correlations are nonetheless the standard design method, as the flow field and heat transfer are notoriously difficult to predict...

... are dominant in a maximum-crossflow configuration. jet impingement concave-convex pimple-dimple impingement cooling heat transfer enhancement MULTI-JET IMPINGEMENT HEAT TRANSFER WITH A DIMPLE-PIMPLE PATTERNED JET PLATE Husam Zawati, Gaurav Gupta, Yakym Khlyapov, Erik Fernandez, Jayanta Kapat...

... Abstract Jet impingement cooling is an important way to cool turbine blades. Ribbed channels are widely used in the chord region of turbine blades and are an important internal cooling structure. In the design process of the internal cooling structure of the conventional turbine blade...

... obtained. The highest total heat transfer rate increased up to 162% with barely any extra pressure loss compared with that of the flat plate. Pressure distributions and streamlines have also been captured to explain the heat transfer characteristic. Impingement cooling pin-fin roughened plate...

... A mathematical model used for studying jet impingement cooling characteristics is established, and the rationality of the calculation model and method is confirmed by the experimental data. The CFX software is used to numerically simulate the jet impingement cooling characteristics on a gas...

... the configuration tested the case of one edge open exit configuration with single row of staggered effusion holes (Case-C1s) shows higher heat transfer among others. Gas turbine blade cooling Impingement cooling Film holes CFD Proceedings of ASME Turbo Expo 2009: Power for Land, Sea and Air F S C ch...

... of the hole arrangement. impingement cooling heat transfer enhancement film cooling pin fin cooling effectiveness Proceedings of GT2007 ASME Turbo Expo 2007: Power for Land, Sea and Air May 14-17, 2007, Montreal, Canada GT2007-27020 1 Copyright © 2007 by ASME combustion gas flow is 380000...

... 05 02 2009 The cooling configuration adopted in this study integrates impingement cooling and pin fin cooling devices into one body, the aim being enhancement of the effective heat transfer area. The purpose of the study is to confirm improvement of cooling effectiveness for two...

... 19 11 2008 The inclusion of roughness elements on the target surface of a turbine aerofoil impingement cooling system is an attractive means of heat transfer enhancement. In such a system, it is important to minimise additional pressure loss caused by the roughness elements and thus...

... 19 11 2008 The combination of roughness elements with an impingement cooling systems offers an attractive means of achieving high heat transfer. Considerable care must be taken to choose the shape, size and the position of the roughness elements to maximise heat transfer and minimise...

..., and total thermal performance was compared. A basic configuration with one pin at the center of a unit area showed the most superior total thermal performance. impingement cooling heat transfer enhancement CFD film cooling pin fin Proceedings of GT2005 ASME Turbo Expo 2005: Power for Land, Sea...